diff options
37 files changed, 3959 insertions, 2446 deletions
diff --git a/man/man8/Makefile.am b/man/man8/Makefile.am index c6e4249e3..33e502ed2 100644 --- a/man/man8/Makefile.am +++ b/man/man8/Makefile.am @@ -42,6 +42,39 @@ dist_man_MANS = \ zgenhostid.8 \ zinject.8 \ zpool.8 \ + zpoolconcepts.8 \ + zpoolprops.8 \ + zpool-add.8 \ + zpool-attach.8 \ + zpool-checkpoint.8 \ + zpool-clear.8 \ + zpool-create.8 \ + zpool-destroy.8 \ + zpool-detach.8 \ + zpool-events.8 \ + zpool-export.8 \ + zpool-get.8 \ + zpool-history.8 \ + zpool-import.8 \ + zpool-initialize.8 \ + zpool-iostat.8 \ + zpool-labelclear.8 \ + zpool-list.8 \ + zpool-offline.8 \ + zpool-online.8 \ + zpool-reguid.8 \ + zpool-remove.8 \ + zpool-reopen.8 \ + zpool-replace.8 \ + zpool-resilver.8 \ + zpool-scrub.8 \ + zpool-set.8 \ + zpool-split.8 \ + zpool-status.8 \ + zpool-sync.8 \ + zpool-trim.8 \ + zpool-upgrade.8 \ + zpool-wait.8 \ zstreamdump.8 nodist_man_MANS = \ diff --git a/man/man8/fsck.zfs.8 b/man/man8/fsck.zfs.8 index baa8c3330..80e7a1ebb 100644 --- a/man/man8/fsck.zfs.8 +++ b/man/man8/fsck.zfs.8 @@ -64,4 +64,4 @@ Darik Horn <[email protected]>. .SH "SEE ALSO" .BR fsck (8), .BR fstab (5), -.BR zpool (8) +.BR zpool-scrub (8) diff --git a/man/man8/zed.8.in b/man/man8/zed.8.in index 097a8f4a7..eaaf7aa6b 100644 --- a/man/man8/zed.8.in +++ b/man/man8/zed.8.in @@ -258,3 +258,4 @@ Developed at Lawrence Livermore National Laboratory (LLNL\-CODE\-403049). .SH SEE ALSO .BR zfs (8), .BR zpool (8) +.BR zpool-events (8) diff --git a/man/man8/zpool-add.8 b/man/man8/zpool-add.8 new file mode 100644 index 000000000..1fceed5f0 --- /dev/null +++ b/man/man8/zpool-add.8 @@ -0,0 +1,102 @@ +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-ADD 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm add +.Nd Adds specified virtual devices to a ZFS storage pool +.Sh SYNOPSIS +.Nm +.Cm add +.Op Fl fgLnP +.Oo Fl o Ar property Ns = Ns Ar value Oc +.Ar pool vdev Ns ... +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm add +.Op Fl fgLnP +.Oo Fl o Ar property Ns = Ns Ar value Oc +.Ar pool vdev Ns ... +.Xc +Adds the specified virtual devices to the given pool. +The +.Ar vdev +specification is described in the +.Em Virtual Devices +section of +.Xr zpoolconcepts 8. +The behavior of the +.Fl f +option, and the device checks performed are described in the +.Nm zpool Cm create +subcommand. +.Bl -tag -width Ds +.It Fl f +Forces use of +.Ar vdev Ns s , +even if they appear in use or specify a conflicting replication level. +Not all devices can be overridden in this manner. +.It Fl g +Display +.Ar vdev , +GUIDs instead of the normal device names. These GUIDs can be used in place of +device names for the zpool detach/offline/remove/replace commands. +.It Fl L +Display real paths for +.Ar vdev Ns s +resolving all symbolic links. This can be used to look up the current block +device name regardless of the /dev/disk/ path used to open it. +.It Fl n +Displays the configuration that would be used without actually adding the +.Ar vdev Ns s . +The actual pool creation can still fail due to insufficient privileges or +device sharing. +.It Fl P +Display real paths for +.Ar vdev Ns s +instead of only the last component of the path. This can be used in +conjunction with the +.Fl L +flag. +.It Fl o Ar property Ns = Ns Ar value +Sets the given pool properties. See the +.Xr zpoolprops 8 +manual page for a list of valid properties that can be set. The only property +supported at the moment is ashift. +.El +.El +.Sh SEE ALSO +.Xr zpool-remove 8 , +.Xr zpool-attach 8 , +.Xr zpool-import 8 , +.Xr zpool-initialize 8 , +.Xr zpool-online 8 diff --git a/man/man8/zpool-attach.8 b/man/man8/zpool-attach.8 new file mode 100644 index 000000000..be0be4e07 --- /dev/null +++ b/man/man8/zpool-attach.8 @@ -0,0 +1,96 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-ATTACH 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm attach +.Nd Attach a new device to an existing ZFS virtual device (vdev). +.Sh SYNOPSIS +.Nm +.Cm attach +.Op Fl fw +.Oo Fl o Ar property Ns = Ns Ar value Oc +.Ar pool device new_device +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm attach +.Op Fl fw +.Oo Fl o Ar property Ns = Ns Ar value Oc +.Ar pool device new_device +.Xc +Attaches +.Ar new_device +to the existing +.Ar device . +The existing device cannot be part of a raidz configuration. +If +.Ar device +is not currently part of a mirrored configuration, +.Ar device +automatically transforms into a two-way mirror of +.Ar device +and +.Ar new_device . +If +.Ar device +is part of a two-way mirror, attaching +.Ar new_device +creates a three-way mirror, and so on. +In either case, +.Ar new_device +begins to resilver immediately. +.Bl -tag -width Ds +.It Fl f +Forces use of +.Ar new_device , +even if it appears to be in use. +Not all devices can be overridden in this manner. +.It Fl w +Waits until +.Ar new_device +has finished resilvering before returning. +.It Fl o Ar property Ns = Ns Ar value +Sets the given pool properties. See the +.Xr zpoolprops 8 +manual page for a list of valid properties that can be set. The only property +supported at the moment is ashift. +.El +.El +.Sh SEE ALSO +.Xr zpool-detach 8 , +.Xr zpool-add 8 , +.Xr zpool-import 8 , +.Xr zpool-initialize 8 , +.Xr zpool-online 8 , +.Xr zpool-replace 8 , +.Xr zpool-resilver 8 diff --git a/man/man8/zpool-checkpoint.8 b/man/man8/zpool-checkpoint.8 new file mode 100644 index 000000000..bcb01d2eb --- /dev/null +++ b/man/man8/zpool-checkpoint.8 @@ -0,0 +1,82 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-CHECKPOINT 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm checkpoint +.Nd Checkpoints the current state of a ZFS storage pool +.Sh SYNOPSIS +.Nm +.Cm checkpoint +.Op Fl d, -discard Oo Fl w, -wait Oc +.Ar pool +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm checkpoint +.Op Fl d, -discard Oo Fl w, -wait Oc +.Ar pool +.Xc +Checkpoints the current state of +.Ar pool +, which can be later restored by +.Nm zpool Cm import --rewind-to-checkpoint . +The existence of a checkpoint in a pool prohibits the following +.Nm zpool +commands: +.Cm remove , +.Cm attach , +.Cm detach , +.Cm split , +and +.Cm reguid . +In addition, it may break reservation boundaries if the pool lacks free +space. +The +.Nm zpool Cm status +command indicates the existence of a checkpoint or the progress of discarding a +checkpoint from a pool. +The +.Nm zpool Cm list +command reports how much space the checkpoint takes from the pool. +.Bl -tag -width Ds +.It Fl d, -discard +Discards an existing checkpoint from +.Ar pool . +.It Fl w, -wait +Waits until the checkpoint has finished being discarded before returning. +.El +.El +.Sh SEE ALSO +.Xr zpool-import 8 , +.Xr zpool-status 8 , +.Xr zfs-snapshot 8 diff --git a/man/man8/zpool-clear.8 b/man/man8/zpool-clear.8 new file mode 100644 index 000000000..c8d16abb9 --- /dev/null +++ b/man/man8/zpool-clear.8 @@ -0,0 +1,60 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-CLEAR 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm clear +.Nd Clears device errors in a ZFS storage pool. +.Sh SYNOPSIS +.Nm +.Cm clear +.Ar pool +.Op Ar device +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm clear +.Ar pool +.Op Ar device +.Xc +Clears device errors in a pool. +If no arguments are specified, all device errors within the pool are cleared. +If one or more devices is specified, only those errors associated with the +specified device or devices are cleared. +If multihost is enabled, and the pool has been suspended, this will not +resume I/O. While the pool was suspended, it may have been imported on +another host, and resuming I/O could result in pool damage. +.El +.Sh SEE ALSO +.Xr zdb 8 , +.Xr zpool-reopen 8 , +.Xr zpool-status 8 diff --git a/man/man8/zpool-create.8 b/man/man8/zpool-create.8 new file mode 100644 index 000000000..646c72dcc --- /dev/null +++ b/man/man8/zpool-create.8 @@ -0,0 +1,207 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-CREATE 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm create +.Nd Creates a new ZFS storage pool +.Sh SYNOPSIS +.Nm +.Cm create +.Op Fl dfn +.Op Fl m Ar mountpoint +.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... +.Oo Fl o Ar feature@feature Ns = Ns Ar value Oc +.Oo Fl O Ar file-system-property Ns = Ns Ar value Oc Ns ... +.Op Fl R Ar root +.Ar pool vdev Ns ... +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm create +.Op Fl dfn +.Op Fl m Ar mountpoint +.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... +.Oo Fl o Ar feature@feature Ns = Ns Ar value Oc Ns ... +.Oo Fl O Ar file-system-property Ns = Ns Ar value Oc Ns ... +.Op Fl R Ar root +.Op Fl t Ar tname +.Ar pool vdev Ns ... +.Xc +Creates a new storage pool containing the virtual devices specified on the +command line. +The pool name must begin with a letter, and can only contain +alphanumeric characters as well as underscore +.Pq Qq Sy _ , +dash +.Pq Qq Sy \&- , +colon +.Pq Qq Sy \&: , +space +.Pq Qq Sy \&\ , +and period +.Pq Qq Sy \&. . +The pool names +.Sy mirror , +.Sy raidz , +.Sy spare +and +.Sy log +are reserved, as are names beginning with +.Sy mirror , +.Sy raidz , +.Sy spare , +and the pattern +.Sy c[0-9] . +The +.Ar vdev +specification is described in the +.Em Virtual Devices +section of +.Xr zpoolconcepts. +.Pp +The command attempts to verify that each device specified is accessible and not +currently in use by another subsystem. However this check is not robust enough +to detect simultaneous attempts to use a new device in different pools, even if +.Sy multihost +is +.Sy enabled. +The +administrator must ensure that simultaneous invocations of any combination of +.Sy zpool replace , +.Sy zpool create , +.Sy zpool add , +or +.Sy zpool labelclear , +do not refer to the same device. Using the same device in two pools will +result in pool corruption. +.Pp +There are some uses, such as being currently mounted, or specified as the +dedicated dump device, that prevents a device from ever being used by ZFS. +Other uses, such as having a preexisting UFS file system, can be overridden with +the +.Fl f +option. +.Pp +The command also checks that the replication strategy for the pool is +consistent. +An attempt to combine redundant and non-redundant storage in a single pool, or +to mix disks and files, results in an error unless +.Fl f +is specified. +The use of differently sized devices within a single raidz or mirror group is +also flagged as an error unless +.Fl f +is specified. +.Pp +Unless the +.Fl R +option is specified, the default mount point is +.Pa / Ns Ar pool . +The mount point must not exist or must be empty, or else the root dataset +cannot be mounted. +This can be overridden with the +.Fl m +option. +.Pp +By default all supported features are enabled on the new pool unless the +.Fl d +option is specified. +.Bl -tag -width Ds +.It Fl d +Do not enable any features on the new pool. +Individual features can be enabled by setting their corresponding properties to +.Sy enabled +with the +.Fl o +option. +See +.Xr zpool-features 5 +for details about feature properties. +.It Fl f +Forces use of +.Ar vdev Ns s , +even if they appear in use or specify a conflicting replication level. +Not all devices can be overridden in this manner. +.It Fl m Ar mountpoint +Sets the mount point for the root dataset. +The default mount point is +.Pa /pool +or +.Pa altroot/pool +if +.Ar altroot +is specified. +The mount point must be an absolute path, +.Sy legacy , +or +.Sy none . +For more information on dataset mount points, see +.Xr zfs 8 . +.It Fl n +Displays the configuration that would be used without actually creating the +pool. +The actual pool creation can still fail due to insufficient privileges or +device sharing. +.It Fl o Ar property Ns = Ns Ar value +Sets the given pool properties. +See the +.Xr zpoolprops +manual page for a list of valid properties that can be set. +.It Fl o Ar feature@feature Ns = Ns Ar value +Sets the given pool feature. See the +.Xr zpool-features 5 +section for a list of valid features that can be set. +Value can be either disabled or enabled. +.It Fl O Ar file-system-property Ns = Ns Ar value +Sets the given file system properties in the root file system of the pool. +See the +.Xr zfsprops 8 +manual page for a list of valid properties that can be set. +.It Fl R Ar root +Equivalent to +.Fl o Sy cachefile Ns = Ns Sy none Fl o Sy altroot Ns = Ns Ar root +.It Fl t Ar tname +Sets the in-core pool name to +.Sy tname +while the on-disk name will be the name specified as the pool name +.Sy pool . +This will set the default cachefile property to none. This is intended +to handle name space collisions when creating pools for other systems, +such as virtual machines or physical machines whose pools live on network +block devices. +.El +.El +.Sh SEE ALSO +.Xr zpool-destroy 8 , +.Xr zpool-export 8 , +.Xr zpool-import 8 diff --git a/man/man8/zpool-destroy.8 b/man/man8/zpool-destroy.8 new file mode 100644 index 000000000..8f35f9f37 --- /dev/null +++ b/man/man8/zpool-destroy.8 @@ -0,0 +1,55 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-DESTROY 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm destroy +.Nd Destroys the given ZFS storage pool, freeing up any devices for other use +.Sh SYNOPSIS +.Nm +.Cm destroy +.Op Fl f +.Ar pool +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm destroy +.Op Fl f +.Ar pool +.Xc +Destroys the given pool, freeing up any devices for other use. +This command tries to unmount any active datasets before destroying the pool. +.Bl -tag -width Ds +.It Fl f +Forces any active datasets contained within the pool to be unmounted. +.El +.El diff --git a/man/man8/zpool-detach.8 b/man/man8/zpool-detach.8 new file mode 100644 index 000000000..2cd030c8e --- /dev/null +++ b/man/man8/zpool-detach.8 @@ -0,0 +1,61 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-DETACH 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm detach +.Nd Detaches a device from a ZFS mirror vdev (virtual device) +.Sh SYNOPSIS +.Nm +.Cm detach +.Ar pool device +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm detach +.Ar pool device +.Xc +Detaches +.Ar device +from a mirror. +The operation is refused if there are no other valid replicas of the data. +If device may be re-added to the pool later on then consider the +.Sy zpool offline +command instead. +.El +.Sh SEE ALSO +.Xr zpool-attach 8 , +.Xr zpool-offline 8 , +.Xr zpool-labelclear 8 , +.Xr zpool-remove 8 , +.Xr zpool-replace 8 , +.Xr zpool-split 8 diff --git a/man/man8/zpool-events.8 b/man/man8/zpool-events.8 new file mode 100644 index 000000000..14886c3ca --- /dev/null +++ b/man/man8/zpool-events.8 @@ -0,0 +1,71 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-EVENTS 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm events +.Nd Lists all recent events generated by the ZFS kernel modules +.Sh SYNOPSIS +.Nm +.Cm events +.Op Fl vHf Oo Ar pool Oc | Fl c +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm events +.Op Fl vHf Oo Ar pool Oc | Fl c +.Xc +Lists all recent events generated by the ZFS kernel modules. These events +are consumed by the +.Xr zed 8 +and used to automate administrative tasks such as replacing a failed device +with a hot spare. For more information about the subclasses and event payloads +that can be generated see the +.Xr zfs-events 5 +man page. +.Bl -tag -width Ds +.It Fl c +Clear all previous events. +.It Fl f +Follow mode. +.It Fl H +Scripted mode. Do not display headers, and separate fields by a +single tab instead of arbitrary space. +.It Fl v +Print the entire payload for each event. +.El +.El +.Sh SEE ALSO +.Xr zed 8 , +.Xr zpool-wait 8 , +.Xr zfs-events 5 , +.Xr zfs-module-parameters 5 diff --git a/man/man8/zpool-export.8 b/man/man8/zpool-export.8 new file mode 100644 index 000000000..1247e12d5 --- /dev/null +++ b/man/man8/zpool-export.8 @@ -0,0 +1,82 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-EXPORT 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm export +.Nd Exports the given ZFS storage pools from the system +.Sh SYNOPSIS +.Nm +.Cm export +.Op Fl a +.Op Fl f +.Ar pool Ns ... +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm export +.Op Fl a +.Op Fl f +.Ar pool Ns ... +.Xc +Exports the given pools from the system. +All devices are marked as exported, but are still considered in use by other +subsystems. +The devices can be moved between systems +.Pq even those of different endianness +and imported as long as a sufficient number of devices are present. +.Pp +Before exporting the pool, all datasets within the pool are unmounted. +A pool can not be exported if it has a shared spare that is currently being +used. +.Pp +For pools to be portable, you must give the +.Nm +command whole disks, not just partitions, so that ZFS can label the disks with +portable EFI labels. +Otherwise, disk drivers on platforms of different endianness will not recognize +the disks. +.Bl -tag -width Ds +.It Fl a +Exports all pools imported on the system. +.It Fl f +Forcefully unmount all datasets, using the +.Nm unmount Fl f +command. +.Pp +This command will forcefully export the pool even if it has a shared spare that +is currently being used. +This may lead to potential data corruption. +.El +.El +.Sh SEE ALSO +.Xr zpool-import 8 diff --git a/man/man8/zpool-get.8 b/man/man8/zpool-get.8 new file mode 100644 index 000000000..235b7ed6f --- /dev/null +++ b/man/man8/zpool-get.8 @@ -0,0 +1,102 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-GET 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm get +.Nd Retrieves properties for the specified ZFS storage pool(s) +.Sh SYNOPSIS +.Nm +.Cm get +.Op Fl Hp +.Op Fl o Ar field Ns Oo , Ns Ar field Oc Ns ... +.Sy all Ns | Ns Ar property Ns Oo , Ns Ar property Oc Ns ... +.Oo Ar pool Oc Ns ... +.Nm +.Cm set +.Ar property Ns = Ns Ar value +.Ar pool +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm get +.Op Fl Hp +.Op Fl o Ar field Ns Oo , Ns Ar field Oc Ns ... +.Sy all Ns | Ns Ar property Ns Oo , Ns Ar property Oc Ns ... +.Oo Ar pool Oc Ns ... +.Xc +Retrieves the given list of properties +.Po +or all properties if +.Sy all +is used +.Pc +for the specified storage pool(s). +These properties are displayed with the following fields: +.Bd -literal + name Name of storage pool + property Property name + value Property value + source Property source, either 'default' or 'local'. +.Ed +.Pp +See the +.Xr zpoolprops +manual page for more information on the available pool properties. +.Bl -tag -width Ds +.It Fl H +Scripted mode. +Do not display headers, and separate fields by a single tab instead of arbitrary +space. +.It Fl o Ar field +A comma-separated list of columns to display. +.Sy name Ns \&, Ns Sy property Ns \&, Ns Sy value Ns \&, Ns Sy source +is the default value. +.It Fl p +Display numbers in parsable (exact) values. +.El +.It Xo +.Nm +.Cm set +.Ar property Ns = Ns Ar value +.Ar pool +.Xc +Sets the given property on the specified pool. +See the +.Xr zpoolprops +manual page for more information on what properties can be set and acceptable +values. +.El +.Sh SEE ALSO +.Xr zpoolprops 8 , +.Xr zpool-list 8 , +.Xr zpool-features 5 diff --git a/man/man8/zpool-history.8 b/man/man8/zpool-history.8 new file mode 100644 index 000000000..b2ac93c1e --- /dev/null +++ b/man/man8/zpool-history.8 @@ -0,0 +1,64 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-HISTORY 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm history +.Nd Displays the command history of the specified ZFS storage pool(s) +.Sh SYNOPSIS +.Nm +.Cm history +.Op Fl il +.Oo Ar pool Oc Ns ... +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm history +.Op Fl il +.Oo Ar pool Oc Ns ... +.Xc +Displays the command history of the specified pool(s) or all pools if no pool is +specified. +.Bl -tag -width Ds +.It Fl i +Displays internally logged ZFS events in addition to user initiated events. +.It Fl l +Displays log records in long format, which in addition to standard format +includes, the user name, the hostname, and the zone in which the operation was +performed. +.El +.El +.Sh SEE ALSO +.Xr zpool-checkpoint 8 , +.Xr zpool-events 8 , +.Xr zpool-status 8 , +.Xr zpool-wait 8 diff --git a/man/man8/zpool-import.8 b/man/man8/zpool-import.8 new file mode 100644 index 000000000..3ff0d8ef3 --- /dev/null +++ b/man/man8/zpool-import.8 @@ -0,0 +1,387 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-IMPORT 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm import +.Nd Lists ZFS storage pools available to import or import the specified pools +.Sh SYNOPSIS +.Nm +.Cm import +.Op Fl D +.Op Fl d Ar dir Ns | Ns device +.Nm +.Cm import +.Fl a +.Op Fl DflmN +.Op Fl F Oo Fl n Oc Oo Fl T Oc Oo Fl X Oc +.Op Fl -rewind-to-checkpoint +.Op Fl c Ar cachefile Ns | Ns Fl d Ar dir Ns | Ns device +.Op Fl o Ar mntopts +.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... +.Op Fl R Ar root +.Nm +.Cm import +.Op Fl Dflm +.Op Fl F Oo Fl n Oc Oo Fl T Oc Oo Fl X Oc +.Op Fl -rewind-to-checkpoint +.Op Fl c Ar cachefile Ns | Ns Fl d Ar dir Ns | Ns device +.Op Fl o Ar mntopts +.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... +.Op Fl R Ar root +.Op Fl s +.Ar pool Ns | Ns Ar id +.Op Ar newpool Oo Fl t Oc +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm import +.Op Fl D +.Op Fl d Ar dir Ns | Ns device +.Xc +Lists pools available to import. +If the +.Fl d +option is not specified, this command searches for devices in +.Pa /dev . +The +.Fl d +option can be specified multiple times, and all directories are searched. +If the device appears to be part of an exported pool, this command displays a +summary of the pool with the name of the pool, a numeric identifier, as well as +the vdev layout and current health of the device for each device or file. +Destroyed pools, pools that were previously destroyed with the +.Nm zpool Cm destroy +command, are not listed unless the +.Fl D +option is specified. +.Pp +The numeric identifier is unique, and can be used instead of the pool name when +multiple exported pools of the same name are available. +.Bl -tag -width Ds +.It Fl c Ar cachefile +Reads configuration from the given +.Ar cachefile +that was created with the +.Sy cachefile +pool property. +This +.Ar cachefile +is used instead of searching for devices. +.It Fl d Ar dir Ns | Ns Ar device +Uses +.Ar device +or searches for devices or files in +.Ar dir . +The +.Fl d +option can be specified multiple times. +.It Fl D +Lists destroyed pools only. +.El +.It Xo +.Nm +.Cm import +.Fl a +.Op Fl DflmN +.Op Fl F Oo Fl n Oc Oo Fl T Oc Oo Fl X Oc +.Op Fl c Ar cachefile Ns | Ns Fl d Ar dir Ns | Ns device +.Op Fl o Ar mntopts +.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... +.Op Fl R Ar root +.Op Fl s +.Xc +Imports all pools found in the search directories. +Identical to the previous command, except that all pools with a sufficient +number of devices available are imported. +Destroyed pools, pools that were previously destroyed with the +.Nm zpool Cm destroy +command, will not be imported unless the +.Fl D +option is specified. +.Bl -tag -width Ds +.It Fl a +Searches for and imports all pools found. +.It Fl c Ar cachefile +Reads configuration from the given +.Ar cachefile +that was created with the +.Sy cachefile +pool property. +This +.Ar cachefile +is used instead of searching for devices. +.It Fl d Ar dir Ns | Ns Ar device +Uses +.Ar device +or searches for devices or files in +.Ar dir . +The +.Fl d +option can be specified multiple times. +This option is incompatible with the +.Fl c +option. +.It Fl D +Imports destroyed pools only. +The +.Fl f +option is also required. +.It Fl f +Forces import, even if the pool appears to be potentially active. +.It Fl F +Recovery mode for a non-importable pool. +Attempt to return the pool to an importable state by discarding the last few +transactions. +Not all damaged pools can be recovered by using this option. +If successful, the data from the discarded transactions is irretrievably lost. +This option is ignored if the pool is importable or already imported. +.It Fl l +Indicates that this command will request encryption keys for all encrypted +datasets it attempts to mount as it is bringing the pool online. Note that if +any datasets have a +.Sy keylocation +of +.Sy prompt +this command will block waiting for the keys to be entered. Without this flag +encrypted datasets will be left unavailable until the keys are loaded. +.It Fl m +Allows a pool to import when there is a missing log device. +Recent transactions can be lost because the log device will be discarded. +.It Fl n +Used with the +.Fl F +recovery option. +Determines whether a non-importable pool can be made importable again, but does +not actually perform the pool recovery. +For more details about pool recovery mode, see the +.Fl F +option, above. +.It Fl N +Import the pool without mounting any file systems. +.It Fl o Ar mntopts +Comma-separated list of mount options to use when mounting datasets within the +pool. +See +.Xr zfs 8 +for a description of dataset properties and mount options. +.It Fl o Ar property Ns = Ns Ar value +Sets the specified property on the imported pool. +See the +.Xr zpoolprops +manual page for more information on the available pool properties. +.It Fl R Ar root +Sets the +.Sy cachefile +property to +.Sy none +and the +.Sy altroot +property to +.Ar root . +.It Fl -rewind-to-checkpoint +Rewinds pool to the checkpointed state. +Once the pool is imported with this flag there is no way to undo the rewind. +All changes and data that were written after the checkpoint are lost! +The only exception is when the +.Sy readonly +mounting option is enabled. +In this case, the checkpointed state of the pool is opened and an +administrator can see how the pool would look like if they were +to fully rewind. +.It Fl s +Scan using the default search path, the libblkid cache will not be +consulted. A custom search path may be specified by setting the +ZPOOL_IMPORT_PATH environment variable. +.It Fl X +Used with the +.Fl F +recovery option. Determines whether extreme +measures to find a valid txg should take place. This allows the pool to +be rolled back to a txg which is no longer guaranteed to be consistent. +Pools imported at an inconsistent txg may contain uncorrectable +checksum errors. For more details about pool recovery mode, see the +.Fl F +option, above. WARNING: This option can be extremely hazardous to the +health of your pool and should only be used as a last resort. +.It Fl T +Specify the txg to use for rollback. Implies +.Fl FX . +For more details +about pool recovery mode, see the +.Fl X +option, above. WARNING: This option can be extremely hazardous to the +health of your pool and should only be used as a last resort. +.El +.It Xo +.Nm +.Cm import +.Op Fl Dflm +.Op Fl F Oo Fl n Oc Oo Fl t Oc Oo Fl T Oc Oo Fl X Oc +.Op Fl c Ar cachefile Ns | Ns Fl d Ar dir Ns | Ns device +.Op Fl o Ar mntopts +.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... +.Op Fl R Ar root +.Op Fl s +.Ar pool Ns | Ns Ar id +.Op Ar newpool +.Xc +Imports a specific pool. +A pool can be identified by its name or the numeric identifier. +If +.Ar newpool +is specified, the pool is imported using the name +.Ar newpool . +Otherwise, it is imported with the same name as its exported name. +.Pp +If a device is removed from a system without running +.Nm zpool Cm export +first, the device appears as potentially active. +It cannot be determined if this was a failed export, or whether the device is +really in use from another host. +To import a pool in this state, the +.Fl f +option is required. +.Bl -tag -width Ds +.It Fl c Ar cachefile +Reads configuration from the given +.Ar cachefile +that was created with the +.Sy cachefile +pool property. +This +.Ar cachefile +is used instead of searching for devices. +.It Fl d Ar dir Ns | Ns Ar device +Uses +.Ar device +or searches for devices or files in +.Ar dir . +The +.Fl d +option can be specified multiple times. +This option is incompatible with the +.Fl c +option. +.It Fl D +Imports destroyed pool. +The +.Fl f +option is also required. +.It Fl f +Forces import, even if the pool appears to be potentially active. +.It Fl F +Recovery mode for a non-importable pool. +Attempt to return the pool to an importable state by discarding the last few +transactions. +Not all damaged pools can be recovered by using this option. +If successful, the data from the discarded transactions is irretrievably lost. +This option is ignored if the pool is importable or already imported. +.It Fl l +Indicates that this command will request encryption keys for all encrypted +datasets it attempts to mount as it is bringing the pool online. Note that if +any datasets have a +.Sy keylocation +of +.Sy prompt +this command will block waiting for the keys to be entered. Without this flag +encrypted datasets will be left unavailable until the keys are loaded. +.It Fl m +Allows a pool to import when there is a missing log device. +Recent transactions can be lost because the log device will be discarded. +.It Fl n +Used with the +.Fl F +recovery option. +Determines whether a non-importable pool can be made importable again, but does +not actually perform the pool recovery. +For more details about pool recovery mode, see the +.Fl F +option, above. +.It Fl o Ar mntopts +Comma-separated list of mount options to use when mounting datasets within the +pool. +See +.Xr zfs 8 +for a description of dataset properties and mount options. +.It Fl o Ar property Ns = Ns Ar value +Sets the specified property on the imported pool. +See the +.Xr zpoolprops +manual page for more information on the available pool properties. +.It Fl R Ar root +Sets the +.Sy cachefile +property to +.Sy none +and the +.Sy altroot +property to +.Ar root . +.It Fl s +Scan using the default search path, the libblkid cache will not be +consulted. A custom search path may be specified by setting the +ZPOOL_IMPORT_PATH environment variable. +.It Fl X +Used with the +.Fl F +recovery option. Determines whether extreme +measures to find a valid txg should take place. This allows the pool to +be rolled back to a txg which is no longer guaranteed to be consistent. +Pools imported at an inconsistent txg may contain uncorrectable +checksum errors. For more details about pool recovery mode, see the +.Fl F +option, above. WARNING: This option can be extremely hazardous to the +health of your pool and should only be used as a last resort. +.It Fl T +Specify the txg to use for rollback. Implies +.Fl FX . +For more details +about pool recovery mode, see the +.Fl X +option, above. WARNING: This option can be extremely hazardous to the +health of your pool and should only be used as a last resort. +.It Fl t +Used with +.Sy newpool . +Specifies that +.Sy newpool +is temporary. Temporary pool names last until export. Ensures that +the original pool name will be used in all label updates and therefore +is retained upon export. +Will also set -o cachefile=none when not explicitly specified. +.El +.El +.Sh SEE ALSO +.Xr zpool-export 8 , +.Xr zpool-list 8 , +.Xr zpool-status 8 diff --git a/man/man8/zpool-initialize.8 b/man/man8/zpool-initialize.8 new file mode 100644 index 000000000..95231e3ea --- /dev/null +++ b/man/man8/zpool-initialize.8 @@ -0,0 +1,81 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-INITIALIZE 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm initialize +.Nd Write to all unallocated regions of eligible devices in a ZFS storage pool +.Sh SYNOPSIS +.Nm +.Cm initialize +.Op Fl c | Fl s +.Op Fl w +.Ar pool +.Op Ar device Ns ... +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm initialize +.Op Fl c | Fl s +.Op Fl w +.Ar pool +.Op Ar device Ns ... +.Xc +Begins initializing by writing to all unallocated regions on the specified +devices, or all eligible devices in the pool if no individual devices are +specified. +Only leaf data or log devices may be initialized. +.Bl -tag -width Ds +.It Fl c, -cancel +Cancel initializing on the specified devices, or all eligible devices if none +are specified. +If one or more target devices are invalid or are not currently being +initialized, the command will fail and no cancellation will occur on any device. +.It Fl s -suspend +Suspend initializing on the specified devices, or all eligible devices if none +are specified. +If one or more target devices are invalid or are not currently being +initialized, the command will fail and no suspension will occur on any device. +Initializing can then be resumed by running +.Nm zpool Cm initialize +with no flags on the relevant target devices. +.It Fl w, -wait +Wait until the devices have finished initializing before returning. +.El +.El +.Sh SEE ALSO +.Xr zpool-add 8 , +.Xr zpool-attach 8 , +.Xr zpool-create 8 , +.Xr zpool-online 8 , +.Xr zpool-replace 8 , +.Xr zpool-trim 8 diff --git a/man/man8/zpool-iostat.8 b/man/man8/zpool-iostat.8 new file mode 100644 index 000000000..52d800329 --- /dev/null +++ b/man/man8/zpool-iostat.8 @@ -0,0 +1,247 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-IOSTAT 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm iostat +.Nd Display logical I/O statistics for the given ZFS storage pools/vdevs +.Sh SYNOPSIS +.Nm +.Cm iostat +.Op Oo Oo Fl c Ar SCRIPT Oc Oo Fl lq Oc Oc Ns | Ns Fl rw +.Op Fl T Sy u Ns | Ns Sy d +.Op Fl ghHLnpPvy +.Oo Oo Ar pool Ns ... Oc Ns | Ns Oo Ar pool vdev Ns ... Oc Ns | Ns Oo Ar vdev Ns ... Oc Oc +.Op Ar interval Op Ar count +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm iostat +.Op Oo Oo Fl c Ar SCRIPT Oc Oo Fl lq Oc Oc Ns | Ns Fl rw +.Op Fl T Sy u Ns | Ns Sy d +.Op Fl ghHLnpPvy +.Oo Oo Ar pool Ns ... Oc Ns | Ns Oo Ar pool vdev Ns ... Oc Ns | Ns Oo Ar vdev Ns ... Oc Oc +.Op Ar interval Op Ar count +.Xc +Displays logical I/O statistics for the given pools/vdevs. Physical I/Os may +be observed via +.Xr iostat 1 . +If writes are located nearby, they may be merged into a single +larger operation. Additional I/O may be generated depending on the level of +vdev redundancy. +To filter output, you may pass in a list of pools, a pool and list of vdevs +in that pool, or a list of any vdevs from any pool. If no items are specified, +statistics for every pool in the system are shown. +When given an +.Ar interval , +the statistics are printed every +.Ar interval +seconds until ^C is pressed. If +.Fl n +flag is specified the headers are displayed only once, otherwise they are +displayed periodically. If count is specified, the command exits +after count reports are printed. The first report printed is always +the statistics since boot regardless of whether +.Ar interval +and +.Ar count +are passed. However, this behavior can be suppressed with the +.Fl y +flag. Also note that the units of +.Sy K , +.Sy M , +.Sy G ... +that are printed in the report are in base 1024. To get the raw +values, use the +.Fl p +flag. +.Bl -tag -width Ds +.It Fl c Op Ar SCRIPT1 Ns Oo , Ns Ar SCRIPT2 Oc Ns ... +Run a script (or scripts) on each vdev and include the output as a new column +in the +.Nm zpool Cm iostat +output. Users can run any script found in their +.Pa ~/.zpool.d +directory or from the system +.Pa /etc/zfs/zpool.d +directory. Script names containing the slash (/) character are not allowed. +The default search path can be overridden by setting the +ZPOOL_SCRIPTS_PATH environment variable. A privileged user can run +.Fl c +if they have the ZPOOL_SCRIPTS_AS_ROOT +environment variable set. If a script requires the use of a privileged +command, like +.Xr smartctl 8 , +then it's recommended you allow the user access to it in +.Pa /etc/sudoers +or add the user to the +.Pa /etc/sudoers.d/zfs +file. +.Pp +If +.Fl c +is passed without a script name, it prints a list of all scripts. +.Fl c +also sets verbose mode +.No \&( Ns Fl v Ns No \&). +.Pp +Script output should be in the form of "name=value". The column name is +set to "name" and the value is set to "value". Multiple lines can be +used to output multiple columns. The first line of output not in the +"name=value" format is displayed without a column title, and no more +output after that is displayed. This can be useful for printing error +messages. Blank or NULL values are printed as a '-' to make output +awk-able. +.Pp +The following environment variables are set before running each script: +.Bl -tag -width "VDEV_PATH" +.It Sy VDEV_PATH +Full path to the vdev +.El +.Bl -tag -width "VDEV_UPATH" +.It Sy VDEV_UPATH +Underlying path to the vdev (/dev/sd*). For use with device mapper, +multipath, or partitioned vdevs. +.El +.Bl -tag -width "VDEV_ENC_SYSFS_PATH" +.It Sy VDEV_ENC_SYSFS_PATH +The sysfs path to the enclosure for the vdev (if any). +.El +.It Fl T Sy u Ns | Ns Sy d +Display a time stamp. +Specify +.Sy u +for a printed representation of the internal representation of time. +See +.Xr time 2 . +Specify +.Sy d +for standard date format. +See +.Xr date 1 . +.It Fl g +Display vdev GUIDs instead of the normal device names. These GUIDs +can be used in place of device names for the zpool +detach/offline/remove/replace commands. +.It Fl H +Scripted mode. Do not display headers, and separate fields by a +single tab instead of arbitrary space. +.It Fl L +Display real paths for vdevs resolving all symbolic links. This can +be used to look up the current block device name regardless of the +.Pa /dev/disk/ +path used to open it. +.It Fl n +Print headers only once when passed +.It Fl p +Display numbers in parsable (exact) values. Time values are in +nanoseconds. +.It Fl P +Display full paths for vdevs instead of only the last component of +the path. This can be used in conjunction with the +.Fl L +flag. +.It Fl r +Print request size histograms for the leaf vdev's IO. This includes +histograms of individual IOs (ind) and aggregate IOs (agg). These stats +can be useful for observing how well IO aggregation is working. Note +that TRIM IOs may exceed 16M, but will be counted as 16M. +.It Fl v +Verbose statistics Reports usage statistics for individual vdevs within the +pool, in addition to the pool-wide statistics. +.It Fl y +Omit statistics since boot. +Normally the first line of output reports the statistics since boot. +This option suppresses that first line of output. +.Ar interval +.It Fl w +Display latency histograms: +.Pp +.Ar total_wait : +Total IO time (queuing + disk IO time). +.Ar disk_wait : +Disk IO time (time reading/writing the disk). +.Ar syncq_wait : +Amount of time IO spent in synchronous priority queues. Does not include +disk time. +.Ar asyncq_wait : +Amount of time IO spent in asynchronous priority queues. Does not include +disk time. +.Ar scrub : +Amount of time IO spent in scrub queue. Does not include disk time. +.It Fl l +Include average latency statistics: +.Pp +.Ar total_wait : +Average total IO time (queuing + disk IO time). +.Ar disk_wait : +Average disk IO time (time reading/writing the disk). +.Ar syncq_wait : +Average amount of time IO spent in synchronous priority queues. Does +not include disk time. +.Ar asyncq_wait : +Average amount of time IO spent in asynchronous priority queues. +Does not include disk time. +.Ar scrub : +Average queuing time in scrub queue. Does not include disk time. +.Ar trim : +Average queuing time in trim queue. Does not include disk time. +.It Fl q +Include active queue statistics. Each priority queue has both +pending ( +.Ar pend ) +and active ( +.Ar activ ) +IOs. Pending IOs are waiting to +be issued to the disk, and active IOs have been issued to disk and are +waiting for completion. These stats are broken out by priority queue: +.Pp +.Ar syncq_read/write : +Current number of entries in synchronous priority +queues. +.Ar asyncq_read/write : +Current number of entries in asynchronous priority queues. +.Ar scrubq_read : +Current number of entries in scrub queue. +.Ar trimq_write : +Current number of entries in trim queue. +.Pp +All queue statistics are instantaneous measurements of the number of +entries in the queues. If you specify an interval, the measurements +will be sampled from the end of the interval. +.El +.El +.Sh SEE ALSO +.Xr zpool-list 8 , +.Xr zpool-status 8 , +.Xr iostat 1 , +.Xr smartctl 8 diff --git a/man/man8/zpool-labelclear.8 b/man/man8/zpool-labelclear.8 new file mode 100644 index 000000000..52638bdf7 --- /dev/null +++ b/man/man8/zpool-labelclear.8 @@ -0,0 +1,63 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-LABELCLEAR 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm labelclear +.Nd Removes ZFS label information from the specified physical device +.Sh SYNOPSIS +.Nm +.Cm labelclear +.Op Fl f +.Ar device +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm labelclear +.Op Fl f +.Ar device +.Xc +Removes ZFS label information from the specified +.Ar device . +The +.Ar device +must not be part of an active pool configuration. +.Bl -tag -width Ds +.It Fl f +Treat exported or foreign devices as inactive. +.El +.El +.Sh SEE ALSO +.Xr zpool-destroy 8 , +.Xr zpool-detach 8 , +.Xr zpool-remove 8 , +.Xr zpool-replace 8 diff --git a/man/man8/zpool-list.8 b/man/man8/zpool-list.8 new file mode 100644 index 000000000..8e5c05df3 --- /dev/null +++ b/man/man8/zpool-list.8 @@ -0,0 +1,119 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-LIST 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm list +.Nd Lists ZFS storage pools along with a health status and space usage +.Sh SYNOPSIS +.Nm +.Cm list +.Op Fl HgLpPv +.Op Fl o Ar property Ns Oo , Ns Ar property Oc Ns ... +.Op Fl T Sy u Ns | Ns Sy d +.Oo Ar pool Oc Ns ... +.Op Ar interval Op Ar count +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm list +.Op Fl HgLpPv +.Op Fl o Ar property Ns Oo , Ns Ar property Oc Ns ... +.Op Fl T Sy u Ns | Ns Sy d +.Oo Ar pool Oc Ns ... +.Op Ar interval Op Ar count +.Xc +Lists the given pools along with a health status and space usage. +If no +.Ar pool Ns s +are specified, all pools in the system are listed. +When given an +.Ar interval , +the information is printed every +.Ar interval +seconds until ^C is pressed. +If +.Ar count +is specified, the command exits after +.Ar count +reports are printed. +.Bl -tag -width Ds +.It Fl g +Display vdev GUIDs instead of the normal device names. These GUIDs +can be used in place of device names for the zpool +detach/offline/remove/replace commands. +.It Fl H +Scripted mode. +Do not display headers, and separate fields by a single tab instead of arbitrary +space. +.It Fl o Ar property +Comma-separated list of properties to display. +See the +.Xr zpoolprops +manual page for a list of valid properties. +The default list is +.Cm name , size , allocated , free , checkpoint, expandsize , fragmentation , +.Cm capacity , dedupratio , health , altroot . +.It Fl L +Display real paths for vdevs resolving all symbolic links. This can +be used to look up the current block device name regardless of the +/dev/disk/ path used to open it. +.It Fl p +Display numbers in parsable +.Pq exact +values. +.It Fl P +Display full paths for vdevs instead of only the last component of +the path. This can be used in conjunction with the +.Fl L +flag. +.It Fl T Sy u Ns | Ns Sy d +Display a time stamp. +Specify +.Sy u +for a printed representation of the internal representation of time. +See +.Xr time 2 . +Specify +.Sy d +for standard date format. +See +.Xr date 1 . +.It Fl v +Verbose statistics. +Reports usage statistics for individual vdevs within the pool, in addition to +the pool-wise statistics. +.El +.El +.Sh SEE ALSO +.Xr zpool-import 8 , +.Xr zpool-status 8 diff --git a/man/man8/zpool-offline.8 b/man/man8/zpool-offline.8 new file mode 100644 index 000000000..70aae190d --- /dev/null +++ b/man/man8/zpool-offline.8 @@ -0,0 +1,89 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-OFFLINE 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm offline +.Nd Take a physical device in a ZFS storage pool offline +.Sh SYNOPSIS +.Nm +.Cm offline +.Op Fl f +.Op Fl t +.Ar pool Ar device Ns ... +.Nm +.Cm online +.Op Fl e +.Ar pool Ar device Ns ... +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm offline +.Op Fl f +.Op Fl t +.Ar pool Ar device Ns ... +.Xc +Takes the specified physical device offline. +While the +.Ar device +is offline, no attempt is made to read or write to the device. +This command is not applicable to spares. +.Bl -tag -width Ds +.It Fl f +Force fault. Instead of offlining the disk, put it into a faulted +state. The fault will persist across imports unless the +.Fl t +flag was specified. +.It Fl t +Temporary. +Upon reboot, the specified physical device reverts to its previous state. +.El +.It Xo +.Nm +.Cm online +.Op Fl e +.Ar pool Ar device Ns ... +.Xc +Brings the specified physical device online. +This command is not applicable to spares. +.Bl -tag -width Ds +.It Fl e +Expand the device to use all available space. +If the device is part of a mirror or raidz then all devices must be expanded +before the new space will become available to the pool. +.El +.El +.Sh SEE ALSO +.Xr zpool-detach 8 , +.Xr zpool-remove 8 , +.Xr zpool-reopen 8 , +.Xr zpool-resilver 8 diff --git a/man/man8/zpool-online.8 b/man/man8/zpool-online.8 new file mode 120000 index 000000000..537e00e1c --- /dev/null +++ b/man/man8/zpool-online.8 @@ -0,0 +1 @@ +zpool-offline.8
\ No newline at end of file diff --git a/man/man8/zpool-reguid.8 b/man/man8/zpool-reguid.8 new file mode 100644 index 000000000..422a82e57 --- /dev/null +++ b/man/man8/zpool-reguid.8 @@ -0,0 +1,53 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-REGUID 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm reguid +.Nd Generate a new unique identifier for a ZFS storage pool +.Sh SYNOPSIS +.Nm +.Cm reguid +.Ar pool +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm reguid +.Ar pool +.Xc +Generates a new unique identifier for the pool. +You must ensure that all devices in this pool are online and healthy before +performing this action. +.El +.Sh SEE ALSO +.Xr zpool-export 8 , +.Xr zpool-import 8 diff --git a/man/man8/zpool-remove.8 b/man/man8/zpool-remove.8 new file mode 100644 index 000000000..b85236840 --- /dev/null +++ b/man/man8/zpool-remove.8 @@ -0,0 +1,109 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-REMOVE 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm remove +.Nd Remove a device from a ZFS storage pool +.Sh SYNOPSIS +.Nm +.Cm remove +.Op Fl npw +.Ar pool Ar device Ns ... +.Nm +.Cm remove +.Fl s +.Ar pool +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm remove +.Op Fl npw +.Ar pool Ar device Ns ... +.Xc +Removes the specified device from the pool. +This command supports removing hot spare, cache, log, and both mirrored and +non-redundant primary top-level vdevs, including dedup and special vdevs. +When the primary pool storage includes a top-level raidz vdev only hot spare, +cache, and log devices can be removed. +.sp +Removing a top-level vdev reduces the total amount of space in the storage pool. +The specified device will be evacuated by copying all allocated space from it to +the other devices in the pool. +In this case, the +.Nm zpool Cm remove +command initiates the removal and returns, while the evacuation continues in +the background. +The removal progress can be monitored with +.Nm zpool Cm status . +If an IO error is encountered during the removal process it will be +cancelled. The +.Sy device_removal +feature flag must be enabled to remove a top-level vdev, see +.Xr zpool-features 5 . +.Pp +A mirrored top-level device (log or data) can be removed by specifying the top-level mirror for the +same. +Non-log devices or data devices that are part of a mirrored configuration can be removed using +the +.Nm zpool Cm detach +command. +.Bl -tag -width Ds +.It Fl n +Do not actually perform the removal ("no-op"). +Instead, print the estimated amount of memory that will be used by the +mapping table after the removal completes. +This is nonzero only for top-level vdevs. +.El +.Bl -tag -width Ds +.It Fl p +Used in conjunction with the +.Fl n +flag, displays numbers as parsable (exact) values. +.It Fl w +Waits until the removal has completed before returning. +.El +.It Xo +.Nm +.Cm remove +.Fl s +.Ar pool +.Xc +Stops and cancels an in-progress removal of a top-level vdev. +.El +.Sh SEE ALSO +.Xr zpool-add 8 , +.Xr zpool-detach 8 , +.Xr zpool-offline 8 , +.Xr zpool-labelclear 8 , +.Xr zpool-replace 8 , +.Xr zpool-split 8 diff --git a/man/man8/zpool-reopen.8 b/man/man8/zpool-reopen.8 new file mode 100644 index 000000000..72f976065 --- /dev/null +++ b/man/man8/zpool-reopen.8 @@ -0,0 +1,55 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-REOPEN 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm reopen +.Nd Reopen all virtual devices (vdevs) associated with a ZFS storage pool +.Sh SYNOPSIS +.Nm +.Cm reopen +.Op Fl n +.Ar pool +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm reopen +.Op Fl n +.Ar pool +.Xc +Reopen all the vdevs associated with the pool. +.Bl -tag -width Ds +.It Fl n +Do not restart an in-progress scrub operation. This is not recommended and can +result in partially resilvered devices unless a second scrub is performed. +.El +.El diff --git a/man/man8/zpool-replace.8 b/man/man8/zpool-replace.8 new file mode 100644 index 000000000..933fb4ae9 --- /dev/null +++ b/man/man8/zpool-replace.8 @@ -0,0 +1,97 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-REPLACE 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm replace +.Nd Replace one device with another in a ZFS storage pool +.Sh SYNOPSIS +.Nm +.Cm replace +.Op Fl fw +.Oo Fl o Ar property Ns = Ns Ar value Oc +.Ar pool Ar device Op Ar new_device +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm replace +.Op Fl fw +.Op Fl o Ar property Ns = Ns Ar value +.Ar pool Ar device Op Ar new_device +.Xc +Replaces +.Ar old_device +with +.Ar new_device . +This is equivalent to attaching +.Ar new_device , +waiting for it to resilver, and then detaching +.Ar old_device . +.Pp +The size of +.Ar new_device +must be greater than or equal to the minimum size of all the devices in a mirror +or raidz configuration. +.Pp +.Ar new_device +is required if the pool is not redundant. +If +.Ar new_device +is not specified, it defaults to +.Ar old_device . +This form of replacement is useful after an existing disk has failed and has +been physically replaced. +In this case, the new disk may have the same +.Pa /dev +path as the old device, even though it is actually a different disk. +ZFS recognizes this. +.Bl -tag -width Ds +.It Fl f +Forces use of +.Ar new_device , +even if it appears to be in use. +Not all devices can be overridden in this manner. +.It Fl o Ar property Ns = Ns Ar value +Sets the given pool properties. See the +.Xr zpoolprops +manual page for a list of valid properties that can be set. +The only property supported at the moment is +.Sy ashift . +.It Fl w +Waits until the replacement has completed before returning. +.El +.El +.Sh SEE ALSO +.Xr zpool-detach 8 , +.Xr zpool-initialize 8 , +.Xr zpool-online 8 , +.Xr zpool-resilver 8 diff --git a/man/man8/zpool-resilver.8 b/man/man8/zpool-resilver.8 new file mode 100644 index 000000000..6ef70873f --- /dev/null +++ b/man/man8/zpool-resilver.8 @@ -0,0 +1,59 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-RESILVER 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm resilver +.Nd Start a resilver of a device in a ZFS storage pool +.Sh SYNOPSIS +.Nm +.Cm resilver +.Ar pool Ns ... +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm resilver +.Ar pool Ns ... +.Xc +Starts a resilver. If an existing resilver is already running it will be +restarted from the beginning. Any drives that were scheduled for a deferred +resilver will be added to the new one. This requires the +.Sy resilver_defer +feature. +.El +.Sh SEE ALSO +.Xr zpool-iostat 8 , +.Xr zpool-online 8 , +.Xr zpool-reopen 8 , +.Xr zpool-replace 8 , +.Xr zpool-scrub 8 , +.Xr zpool-status 8 diff --git a/man/man8/zpool-scrub.8 b/man/man8/zpool-scrub.8 new file mode 100644 index 000000000..1dfb19f6f --- /dev/null +++ b/man/man8/zpool-scrub.8 @@ -0,0 +1,105 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-SCRUB 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm scrub +.Nd Begin a scrub or resume a paused scrub of a ZFS storage pool +.Sh SYNOPSIS +.Nm +.Cm scrub +.Op Fl s | Fl p +.Op Fl w +.Ar pool Ns ... +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm scrub +.Op Fl s | Fl p +.Op Fl w +.Ar pool Ns ... +.Xc +Begins a scrub or resumes a paused scrub. +The scrub examines all data in the specified pools to verify that it checksums +correctly. +For replicated +.Pq mirror or raidz +devices, ZFS automatically repairs any damage discovered during the scrub. +The +.Nm zpool Cm status +command reports the progress of the scrub and summarizes the results of the +scrub upon completion. +.Pp +Scrubbing and resilvering are very similar operations. +The difference is that resilvering only examines data that ZFS knows to be out +of date +.Po +for example, when attaching a new device to a mirror or replacing an existing +device +.Pc , +whereas scrubbing examines all data to discover silent errors due to hardware +faults or disk failure. +.Pp +Because scrubbing and resilvering are I/O-intensive operations, ZFS only allows +one at a time. +If a scrub is paused, the +.Nm zpool Cm scrub +resumes it. +If a resilver is in progress, ZFS does not allow a scrub to be started until the +resilver completes. +.Pp +Note that, due to changes in pool data on a live system, it is possible for +scrubs to progress slightly beyond 100% completion. During this period, no +completion time estimate will be provided. +.Bl -tag -width Ds +.It Fl s +Stop scrubbing. +.El +.Bl -tag -width Ds +.It Fl p +Pause scrubbing. +Scrub pause state and progress are periodically synced to disk. +If the system is restarted or pool is exported during a paused scrub, +even after import, scrub will remain paused until it is resumed. +Once resumed the scrub will pick up from the place where it was last +checkpointed to disk. +To resume a paused scrub issue +.Nm zpool Cm scrub +again. +.It Fl w +Wait until scrub has completed before returning. +.El +.El +.Sh SEE ALSO +.Xr zpool-iostat 8 , +.Xr zpool-resilver 8 , +.Xr zpool-status 8 diff --git a/man/man8/zpool-set.8 b/man/man8/zpool-set.8 new file mode 120000 index 000000000..2b8b8cfb7 --- /dev/null +++ b/man/man8/zpool-set.8 @@ -0,0 +1 @@ +zpool-get.8
\ No newline at end of file diff --git a/man/man8/zpool-split.8 b/man/man8/zpool-split.8 new file mode 100644 index 000000000..e3ca6fe9c --- /dev/null +++ b/man/man8/zpool-split.8 @@ -0,0 +1,124 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-SPLIT 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm split +.Nd Split devices off a ZFS storage pool creating a new pool +.Sh SYNOPSIS +.Nm +.Cm split +.Op Fl gLlnP +.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... +.Op Fl R Ar root +.Ar pool newpool +.Oo Ar device Oc Ns ... +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm split +.Op Fl gLlnP +.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... +.Op Fl R Ar root +.Ar pool newpool +.Op Ar device ... +.Xc +Splits devices off +.Ar pool +creating +.Ar newpool . +All vdevs in +.Ar pool +must be mirrors and the pool must not be in the process of resilvering. +At the time of the split, +.Ar newpool +will be a replica of +.Ar pool . +By default, the +last device in each mirror is split from +.Ar pool +to create +.Ar newpool . +.Pp +The optional device specification causes the specified device(s) to be +included in the new +.Ar pool +and, should any devices remain unspecified, +the last device in each mirror is used as would be by default. +.Bl -tag -width Ds +.It Fl g +Display vdev GUIDs instead of the normal device names. These GUIDs +can be used in place of device names for the zpool +detach/offline/remove/replace commands. +.It Fl L +Display real paths for vdevs resolving all symbolic links. This can +be used to look up the current block device name regardless of the +.Pa /dev/disk/ +path used to open it. +.It Fl l +Indicates that this command will request encryption keys for all encrypted +datasets it attempts to mount as it is bringing the new pool online. Note that +if any datasets have a +.Sy keylocation +of +.Sy prompt +this command will block waiting for the keys to be entered. Without this flag +encrypted datasets will be left unavailable until the keys are loaded. +.It Fl n +Do dry run, do not actually perform the split. +Print out the expected configuration of +.Ar newpool . +.It Fl P +Display full paths for vdevs instead of only the last component of +the path. This can be used in conjunction with the +.Fl L +flag. +.It Fl o Ar property Ns = Ns Ar value +Sets the specified property for +.Ar newpool . +See the +.Xr zpoolprops +manual page for more information on the available pool properties. +.It Fl R Ar root +Set +.Sy altroot +for +.Ar newpool +to +.Ar root +and automatically import it. +.El +.El +.Sh SEE ALSO +.Xr zpool-import 8 , +.Xr zpool-list 8 , +.Xr zpool-remove 8 diff --git a/man/man8/zpool-status.8 b/man/man8/zpool-status.8 new file mode 100644 index 000000000..7364bf635 --- /dev/null +++ b/man/man8/zpool-status.8 @@ -0,0 +1,138 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-STATUS 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm status +.Nd Display detailed health status for the given ZFS storage pools +.Sh SYNOPSIS +.Nm +.Cm status +.Oo Fl c Ar SCRIPT Oc +.Op Fl DigLpPstvx +.Op Fl T Sy u Ns | Ns Sy d +.Oo Ar pool Oc Ns ... +.Op Ar interval Op Ar count +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm status +.Op Fl c Op Ar SCRIPT1 Ns Oo , Ns Ar SCRIPT2 Oc Ns ... +.Op Fl DigLpPstvx +.Op Fl T Sy u Ns | Ns Sy d +.Oo Ar pool Oc Ns ... +.Op Ar interval Op Ar count +.Xc +Displays the detailed health status for the given pools. +If no +.Ar pool +is specified, then the status of each pool in the system is displayed. +For more information on pool and device health, see the +.Em Device Failure and Recovery +section of +.Xr zpoolconcepts 8. +.Pp +If a scrub or resilver is in progress, this command reports the percentage done +and the estimated time to completion. +Both of these are only approximate, because the amount of data in the pool and +the other workloads on the system can change. +.Bl -tag -width Ds +.It Fl c Op Ar SCRIPT1 Ns Oo , Ns Ar SCRIPT2 Oc Ns ... +Run a script (or scripts) on each vdev and include the output as a new column +in the +.Nm zpool Cm status +output. See the +.Fl c +option of +.Nm zpool Cm iostat +for complete details. +.It Fl i +Display vdev initialization status. +.It Fl g +Display vdev GUIDs instead of the normal device names. These GUIDs +can be used in place of device names for the zpool +detach/offline/remove/replace commands. +.It Fl L +Display real paths for vdevs resolving all symbolic links. This can +be used to look up the current block device name regardless of the +.Pa /dev/disk/ +path used to open it. +.It Fl p +Display numbers in parsable (exact) values. +.It Fl P +Display full paths for vdevs instead of only the last component of +the path. This can be used in conjunction with the +.Fl L +flag. +.It Fl D +Display a histogram of deduplication statistics, showing the allocated +.Pq physically present on disk +and referenced +.Pq logically referenced in the pool +block counts and sizes by reference count. +.It Fl s +Display the number of leaf VDEV slow IOs. This is the number of IOs that +didn't complete in \fBzio_slow_io_ms\fR milliseconds (default 30 seconds). +This does not necessarily mean the IOs failed to complete, just took an +unreasonably long amount of time. This may indicate a problem with the +underlying storage. +.It Fl t +Display vdev TRIM status. +.It Fl T Sy u Ns | Ns Sy d +Display a time stamp. +Specify +.Sy u +for a printed representation of the internal representation of time. +See +.Xr time 2 . +Specify +.Sy d +for standard date format. +See +.Xr date 1 . +.It Fl v +Displays verbose data error information, printing out a complete list of all +data errors since the last complete pool scrub. +.It Fl x +Only display status for pools that are exhibiting errors or are otherwise +unavailable. +Warnings about pools not using the latest on-disk format will not be included. +.El +.El +.Sh SEE ALSO +.Xr zpool-events 8 , +.Xr zpool-history 8 , +.Xr zpool-iostat 8 , +.Xr zpool-list 8 , +.Xr zpool-resilver 8 , +.Xr zpool-scrub 8 , +.Xr zpool-wait 8 diff --git a/man/man8/zpool-sync.8 b/man/man8/zpool-sync.8 new file mode 100644 index 000000000..e45531b7b --- /dev/null +++ b/man/man8/zpool-sync.8 @@ -0,0 +1,57 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-SYNC 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm sync +.Nd Force data to be written to primary storage of a ZFS storage pool and update reporting data +.Sh SYNOPSIS +.Nm +.Cm sync +.Oo Ar pool Oc Ns ... +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm sync +.Op Ar pool ... +.Xc +This command forces all in-core dirty data to be written to the primary +pool storage and not the ZIL. It will also update administrative +information including quota reporting. Without arguments, +.Sy zpool sync +will sync all pools on the system. Otherwise, it will sync only the +specified pool(s). +.El +.Sh SEE ALSO +.Xr zpoolconcepts 8 , +.Xr zpool-export 8 , +.Xr zpool-iostat 8 diff --git a/man/man8/zpool-trim.8 b/man/man8/zpool-trim.8 new file mode 100644 index 000000000..4df3e9984 --- /dev/null +++ b/man/man8/zpool-trim.8 @@ -0,0 +1,92 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-TRIM 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm trim +.Nd Initiate immediate TRIM operations for all free space in a ZFS storage pool +.Sh SYNOPSIS +.Nm +.Cm trim +.Op Fl d +.Op Fl r Ar rate +.Op Fl c | Fl s +.Ar pool +.Op Ar device Ns ... +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm trim +.Op Fl d +.Op Fl c | Fl s +.Ar pool +.Op Ar device Ns ... +.Xc +Initiates an immediate on-demand TRIM operation for all of the free space in +a pool. This operation informs the underlying storage devices of all blocks +in the pool which are no longer allocated and allows thinly provisioned +devices to reclaim the space. +.Pp +A manual on-demand TRIM operation can be initiated irrespective of the +.Sy autotrim +pool property setting. See the documentation for the +.Sy autotrim +property above for the types of vdev devices which can be trimmed. +.Bl -tag -width Ds +.It Fl d -secure +Causes a secure TRIM to be initiated. When performing a secure TRIM, the +device guarantees that data stored on the trimmed blocks has been erased. +This requires support from the device and is not supported by all SSDs. +.It Fl r -rate Ar rate +Controls the rate at which the TRIM operation progresses. Without this +option TRIM is executed as quickly as possible. The rate, expressed in bytes +per second, is applied on a per-vdev basis and may be set differently for +each leaf vdev. +.It Fl c, -cancel +Cancel trimming on the specified devices, or all eligible devices if none +are specified. +If one or more target devices are invalid or are not currently being +trimmed, the command will fail and no cancellation will occur on any device. +.It Fl s -suspend +Suspend trimming on the specified devices, or all eligible devices if none +are specified. +If one or more target devices are invalid or are not currently being +trimmed, the command will fail and no suspension will occur on any device. +Trimming can then be resumed by running +.Nm zpool Cm trim +with no flags on the relevant target devices. +.El +.El +.Sh SEE ALSO +.Xr zpool-initialize 8 , +.Xr zpool-wait 8 , +.Xr zpoolprops 8 diff --git a/man/man8/zpool-upgrade.8 b/man/man8/zpool-upgrade.8 new file mode 100644 index 000000000..99fe270cf --- /dev/null +++ b/man/man8/zpool-upgrade.8 @@ -0,0 +1,96 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-UPGRADE 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm upgrade +.Nd Manage version and feature flags of ZFS storage pools +.Sh SYNOPSIS +.Nm +.Cm upgrade +.Nm +.Cm upgrade +.Fl v +.Nm +.Cm upgrade +.Op Fl V Ar version +.Fl a Ns | Ns Ar pool Ns ... +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm upgrade +.Xc +Displays pools which do not have all supported features enabled and pools +formatted using a legacy ZFS version number. +These pools can continue to be used, but some features may not be available. +Use +.Nm zpool Cm upgrade Fl a +to enable all features on all pools. +.It Xo +.Nm +.Cm upgrade +.Fl v +.Xc +Displays legacy ZFS versions supported by the current software. +See +.Xr zpool-features 5 +for a description of feature flags features supported by the current software. +.It Xo +.Nm +.Cm upgrade +.Op Fl V Ar version +.Fl a Ns | Ns Ar pool Ns ... +.Xc +Enables all supported features on the given pool. +Once this is done, the pool will no longer be accessible on systems that do not +support feature flags. +See +.Xr zpool-features 5 +for details on compatibility with systems that support feature flags, but do not +support all features enabled on the pool. +.Bl -tag -width Ds +.It Fl a +Enables all supported features on all pools. +.It Fl V Ar version +Upgrade to the specified legacy version. +If the +.Fl V +flag is specified, no features will be enabled on the pool. +This option can only be used to increase the version number up to the last +supported legacy version number. +.El +.El +.Sh SEE ALSO +.Xr zpool-features 5 , +.Xr zpoolconcepts 8 , +.Xr zpoolprops 8 , +.Xr zpool-history 8 diff --git a/man/man8/zpool-wait.8 b/man/man8/zpool-wait.8 new file mode 100644 index 000000000..51a27a5a2 --- /dev/null +++ b/man/man8/zpool-wait.8 @@ -0,0 +1,112 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOL-WAIT 8 +.Os Linux +.Sh NAME +.Nm zpool Ns Pf - Cm wait +.Nd Wait for background activity to stop in a ZFS storage pool +.Sh SYNOPSIS +.Nm +.Cm wait +.Op Fl Hp +.Op Fl T Sy u Ns | Ns Sy d +.Op Fl t Ar activity Ns Oo , Ns Ar activity Ns Oc Ns ... +.Ar pool +.Op Ar interval +.Sh DESCRIPTION +.Bl -tag -width Ds +.It Xo +.Nm +.Cm wait +.Op Fl Hp +.Op Fl T Sy u Ns | Ns Sy d +.Op Fl t Ar activity Ns Oo , Ns Ar activity Ns Oc Ns ... +.Ar pool +.Op Ar interval +.Xc +Waits until all background activity of the given types has ceased in the given +pool. +The activity could cease because it has completed, or because it has been +paused or canceled by a user, or because the pool has been exported or +destroyed. +If no activities are specified, the command waits until background activity of +every type listed below has ceased. +If there is no activity of the given types in progress, the command returns +immediately. +.Pp +These are the possible values for +.Ar activity , +along with what each one waits for: +.Bd -literal + discard Checkpoint to be discarded + free 'freeing' property to become 0 + initialize All initializations to cease + replace All device replacements to cease + remove Device removal to cease + resilver Resilver to cease + scrub Scrub to cease +.Ed +.Pp +If an +.Ar interval +is provided, the amount of work remaining, in bytes, for each activity is +printed every +.Ar interval +seconds. +.Bl -tag -width Ds +.It Fl H +Scripted mode. +Do not display headers, and separate fields by a single tab instead of arbitrary +space. +.It Fl p +Display numbers in parsable (exact) values. +.It Fl T Sy u Ns | Ns Sy d +Display a time stamp. +Specify +.Sy u +for a printed representation of the internal representation of time. +See +.Xr time 2 . +Specify +.Sy d +for standard date format. +See +.Xr date 1 . +.El +.El +.Sh SEE ALSO +.Xr zpool-status 8 , +.Xr zpool-checkpoint 8 , +.Xr zpool-initialize 8 , +.Xr zpool-replace 8 , +.Xr zpool-remove 8 , +.Xr zpool-resilver 8 , +.Xr zpool-scrub 8 diff --git a/man/man8/zpool.8 b/man/man8/zpool.8 index df30b7ca0..4b15785c2 100644 --- a/man/man8/zpool.8 +++ b/man/man8/zpool.8 @@ -28,7 +28,7 @@ .\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. .\" .Dd August 9, 2019 -.Dt ZPOOL 8 SMM +.Dt ZPOOL 8 .Os Linux .Sh NAME .Nm zpool @@ -37,190 +37,10 @@ .Nm .Fl ?V .Nm -.Cm add -.Op Fl fgLnP -.Oo Fl o Ar property Ns = Ns Ar value Oc -.Ar pool vdev Ns ... -.Nm -.Cm attach -.Op Fl fw -.Oo Fl o Ar property Ns = Ns Ar value Oc -.Ar pool device new_device -.Nm -.Cm checkpoint -.Op Fl d, -discard Oo Fl w, -wait Oc -.Ar pool -.Nm -.Cm clear -.Ar pool -.Op Ar device -.Nm -.Cm create -.Op Fl dfn -.Op Fl m Ar mountpoint -.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... -.Oo Fl o Ar feature@feature Ns = Ns Ar value Oc -.Oo Fl O Ar file-system-property Ns = Ns Ar value Oc Ns ... -.Op Fl R Ar root -.Ar pool vdev Ns ... -.Nm -.Cm destroy -.Op Fl f -.Ar pool -.Nm -.Cm detach -.Ar pool device -.Nm -.Cm events -.Op Fl vHf Oo Ar pool Oc | Fl c -.Nm -.Cm export -.Op Fl a -.Op Fl f -.Ar pool Ns ... -.Nm -.Cm get -.Op Fl Hp -.Op Fl o Ar field Ns Oo , Ns Ar field Oc Ns ... -.Sy all Ns | Ns Ar property Ns Oo , Ns Ar property Oc Ns ... -.Oo Ar pool Oc Ns ... -.Nm -.Cm history -.Op Fl il -.Oo Ar pool Oc Ns ... -.Nm -.Cm import -.Op Fl D -.Op Fl d Ar dir Ns | Ns device -.Nm -.Cm import -.Fl a -.Op Fl DflmN -.Op Fl F Oo Fl n Oc Oo Fl T Oc Oo Fl X Oc -.Op Fl -rewind-to-checkpoint -.Op Fl c Ar cachefile Ns | Ns Fl d Ar dir Ns | Ns device -.Op Fl o Ar mntopts -.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... -.Op Fl R Ar root -.Nm -.Cm import -.Op Fl Dflm -.Op Fl F Oo Fl n Oc Oo Fl T Oc Oo Fl X Oc -.Op Fl -rewind-to-checkpoint -.Op Fl c Ar cachefile Ns | Ns Fl d Ar dir Ns | Ns device -.Op Fl o Ar mntopts -.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... -.Op Fl R Ar root -.Op Fl s -.Ar pool Ns | Ns Ar id -.Op Ar newpool Oo Fl t Oc -.Nm -.Cm initialize -.Op Fl c | Fl s -.Op Fl w -.Ar pool -.Op Ar device Ns ... -.Nm -.Cm iostat -.Op Oo Oo Fl c Ar SCRIPT Oc Oo Fl lq Oc Oc Ns | Ns Fl rw -.Op Fl T Sy u Ns | Ns Sy d -.Op Fl ghHLnpPvy -.Oo Oo Ar pool Ns ... Oc Ns | Ns Oo Ar pool vdev Ns ... Oc Ns | Ns Oo Ar vdev Ns ... Oc Oc -.Op Ar interval Op Ar count -.Nm -.Cm labelclear -.Op Fl f -.Ar device -.Nm -.Cm list -.Op Fl HgLpPv -.Op Fl o Ar property Ns Oo , Ns Ar property Oc Ns ... -.Op Fl T Sy u Ns | Ns Sy d -.Oo Ar pool Oc Ns ... -.Op Ar interval Op Ar count -.Nm -.Cm offline -.Op Fl f -.Op Fl t -.Ar pool Ar device Ns ... -.Nm -.Cm online -.Op Fl e -.Ar pool Ar device Ns ... -.Nm -.Cm reguid -.Ar pool -.Nm -.Cm reopen -.Op Fl n -.Ar pool -.Nm -.Cm remove -.Op Fl npw -.Ar pool Ar device Ns ... -.Nm -.Cm remove -.Fl s -.Ar pool -.Nm -.Cm replace -.Op Fl fw -.Oo Fl o Ar property Ns = Ns Ar value Oc -.Ar pool Ar device Op Ar new_device -.Nm -.Cm resilver -.Ar pool Ns ... -.Nm -.Cm scrub -.Op Fl s | Fl p -.Op Fl w -.Ar pool Ns ... -.Nm -.Cm trim -.Op Fl d -.Op Fl r Ar rate -.Op Fl c | Fl s -.Ar pool -.Op Ar device Ns ... -.Nm -.Cm set -.Ar property Ns = Ns Ar value -.Ar pool -.Nm -.Cm split -.Op Fl gLlnP -.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... -.Op Fl R Ar root -.Ar pool newpool -.Oo Ar device Oc Ns ... -.Nm -.Cm status -.Oo Fl c Ar SCRIPT Oc -.Op Fl DigLpPstvx -.Op Fl T Sy u Ns | Ns Sy d -.Oo Ar pool Oc Ns ... -.Op Ar interval Op Ar count -.Nm -.Cm sync -.Oo Ar pool Oc Ns ... -.Nm -.Cm upgrade -.Nm -.Cm upgrade -.Fl v -.Nm -.Cm upgrade -.Op Fl V Ar version -.Fl a Ns | Ns Ar pool Ns ... -.Nm -.Cm wait -.Op Fl Hp -.Op Fl T Sy u Ns | Ns Sy d -.Op Fl t Ar activity Ns Oo , Ns Ar activity Ns Oc Ns ... -.Ar pool -.Op Ar interval -.Nm .Cm version +.Nm +.Cm <subcommand> +.Op Ar <args> .Sh DESCRIPTION The .Nm @@ -231,696 +51,11 @@ All datasets within a storage pool share the same space. See .Xr zfs 8 for information on managing datasets. -.Ss Virtual Devices (vdevs) -A "virtual device" describes a single device or a collection of devices -organized according to certain performance and fault characteristics. -The following virtual devices are supported: -.Bl -tag -width Ds -.It Sy disk -A block device, typically located under -.Pa /dev . -ZFS can use individual slices or partitions, though the recommended mode of -operation is to use whole disks. -A disk can be specified by a full path, or it can be a shorthand name -.Po the relative portion of the path under -.Pa /dev -.Pc . -A whole disk can be specified by omitting the slice or partition designation. -For example, -.Pa sda -is equivalent to -.Pa /dev/sda . -When given a whole disk, ZFS automatically labels the disk, if necessary. -.It Sy file -A regular file. -The use of files as a backing store is strongly discouraged. -It is designed primarily for experimental purposes, as the fault tolerance of a -file is only as good as the file system of which it is a part. -A file must be specified by a full path. -.It Sy mirror -A mirror of two or more devices. -Data is replicated in an identical fashion across all components of a mirror. -A mirror with N disks of size X can hold X bytes and can withstand (N-1) devices -failing before data integrity is compromised. -.It Sy raidz , raidz1 , raidz2 , raidz3 -A variation on RAID-5 that allows for better distribution of parity and -eliminates the RAID-5 -.Qq write hole -.Pq in which data and parity become inconsistent after a power loss . -Data and parity is striped across all disks within a raidz group. -.Pp -A raidz group can have single-, double-, or triple-parity, meaning that the -raidz group can sustain one, two, or three failures, respectively, without -losing any data. -The -.Sy raidz1 -vdev type specifies a single-parity raidz group; the -.Sy raidz2 -vdev type specifies a double-parity raidz group; and the -.Sy raidz3 -vdev type specifies a triple-parity raidz group. -The -.Sy raidz -vdev type is an alias for -.Sy raidz1 . .Pp -A raidz group with N disks of size X with P parity disks can hold approximately -(N-P)*X bytes and can withstand P device(s) failing before data integrity is -compromised. -The minimum number of devices in a raidz group is one more than the number of -parity disks. -The recommended number is between 3 and 9 to help increase performance. -.It Sy spare -A pseudo-vdev which keeps track of available hot spares for a pool. -For more information, see the -.Sx Hot Spares -section. -.It Sy log -A separate intent log device. -If more than one log device is specified, then writes are load-balanced between -devices. -Log devices can be mirrored. -However, raidz vdev types are not supported for the intent log. -For more information, see the -.Sx Intent Log -section. -.It Sy dedup -A device dedicated solely for deduplication tables. -The redundancy of this device should match the redundancy of the other normal -devices in the pool. If more than one dedup device is specified, then -allocations are load-balanced between those devices. -.It Sy special -A device dedicated solely for allocating various kinds of internal metadata, -and optionally small file blocks. -The redundancy of this device should match the redundancy of the other normal -devices in the pool. If more than one special device is specified, then -allocations are load-balanced between those devices. -.Pp -For more information on special allocations, see the -.Sx Special Allocation Class -section. -.It Sy cache -A device used to cache storage pool data. -A cache device cannot be configured as a mirror or raidz group. -For more information, see the -.Sx Cache Devices -section. -.El -.Pp -Virtual devices cannot be nested, so a mirror or raidz virtual device can only -contain files or disks. -Mirrors of mirrors -.Pq or other combinations -are not allowed. -.Pp -A pool can have any number of virtual devices at the top of the configuration -.Po known as -.Qq root vdevs -.Pc . -Data is dynamically distributed across all top-level devices to balance data -among devices. -As new virtual devices are added, ZFS automatically places data on the newly -available devices. -.Pp -Virtual devices are specified one at a time on the command line, separated by -whitespace. -The keywords -.Sy mirror -and -.Sy raidz -are used to distinguish where a group ends and another begins. -For example, the following creates two root vdevs, each a mirror of two disks: -.Bd -literal -# zpool create mypool mirror sda sdb mirror sdc sdd -.Ed -.Ss Device Failure and Recovery -ZFS supports a rich set of mechanisms for handling device failure and data -corruption. -All metadata and data is checksummed, and ZFS automatically repairs bad data -from a good copy when corruption is detected. -.Pp -In order to take advantage of these features, a pool must make use of some form -of redundancy, using either mirrored or raidz groups. -While ZFS supports running in a non-redundant configuration, where each root -vdev is simply a disk or file, this is strongly discouraged. -A single case of bit corruption can render some or all of your data unavailable. -.Pp -A pool's health status is described by one of three states: online, degraded, -or faulted. -An online pool has all devices operating normally. -A degraded pool is one in which one or more devices have failed, but the data is -still available due to a redundant configuration. -A faulted pool has corrupted metadata, or one or more faulted devices, and -insufficient replicas to continue functioning. -.Pp -The health of the top-level vdev, such as mirror or raidz device, is -potentially impacted by the state of its associated vdevs, or component -devices. -A top-level vdev or component device is in one of the following states: -.Bl -tag -width "DEGRADED" -.It Sy DEGRADED -One or more top-level vdevs is in the degraded state because one or more -component devices are offline. -Sufficient replicas exist to continue functioning. -.Pp -One or more component devices is in the degraded or faulted state, but -sufficient replicas exist to continue functioning. -The underlying conditions are as follows: -.Bl -bullet -.It -The number of checksum errors exceeds acceptable levels and the device is -degraded as an indication that something may be wrong. -ZFS continues to use the device as necessary. -.It -The number of I/O errors exceeds acceptable levels. -The device could not be marked as faulted because there are insufficient -replicas to continue functioning. -.El -.It Sy FAULTED -One or more top-level vdevs is in the faulted state because one or more -component devices are offline. -Insufficient replicas exist to continue functioning. -.Pp -One or more component devices is in the faulted state, and insufficient -replicas exist to continue functioning. -The underlying conditions are as follows: -.Bl -bullet -.It -The device could be opened, but the contents did not match expected values. -.It -The number of I/O errors exceeds acceptable levels and the device is faulted to -prevent further use of the device. -.El -.It Sy OFFLINE -The device was explicitly taken offline by the -.Nm zpool Cm offline -command. -.It Sy ONLINE -The device is online and functioning. -.It Sy REMOVED -The device was physically removed while the system was running. -Device removal detection is hardware-dependent and may not be supported on all -platforms. -.It Sy UNAVAIL -The device could not be opened. -If a pool is imported when a device was unavailable, then the device will be -identified by a unique identifier instead of its path since the path was never -correct in the first place. -.El -.Pp -If a device is removed and later re-attached to the system, ZFS attempts -to put the device online automatically. -Device attach detection is hardware-dependent and might not be supported on all -platforms. -.Ss Hot Spares -ZFS allows devices to be associated with pools as -.Qq hot spares . -These devices are not actively used in the pool, but when an active device -fails, it is automatically replaced by a hot spare. -To create a pool with hot spares, specify a -.Sy spare -vdev with any number of devices. -For example, -.Bd -literal -# zpool create pool mirror sda sdb spare sdc sdd -.Ed -.Pp -Spares can be shared across multiple pools, and can be added with the -.Nm zpool Cm add -command and removed with the -.Nm zpool Cm remove -command. -Once a spare replacement is initiated, a new -.Sy spare -vdev is created within the configuration that will remain there until the -original device is replaced. -At this point, the hot spare becomes available again if another device fails. -.Pp -If a pool has a shared spare that is currently being used, the pool can not be -exported since other pools may use this shared spare, which may lead to -potential data corruption. -.Pp -Shared spares add some risk. If the pools are imported on different hosts, and -both pools suffer a device failure at the same time, both could attempt to use -the spare at the same time. This may not be detected, resulting in data -corruption. -.Pp -An in-progress spare replacement can be cancelled by detaching the hot spare. -If the original faulted device is detached, then the hot spare assumes its -place in the configuration, and is removed from the spare list of all active -pools. -.Pp -Spares cannot replace log devices. -.Ss Intent Log -The ZFS Intent Log (ZIL) satisfies POSIX requirements for synchronous -transactions. -For instance, databases often require their transactions to be on stable storage -devices when returning from a system call. -NFS and other applications can also use -.Xr fsync 2 -to ensure data stability. -By default, the intent log is allocated from blocks within the main pool. -However, it might be possible to get better performance using separate intent -log devices such as NVRAM or a dedicated disk. -For example: -.Bd -literal -# zpool create pool sda sdb log sdc -.Ed -.Pp -Multiple log devices can also be specified, and they can be mirrored. -See the -.Sx EXAMPLES -section for an example of mirroring multiple log devices. -.Pp -Log devices can be added, replaced, attached, detached and removed. In -addition, log devices are imported and exported as part of the pool -that contains them. -Mirrored devices can be removed by specifying the top-level mirror vdev. -.Ss Cache Devices -Devices can be added to a storage pool as -.Qq cache devices . -These devices provide an additional layer of caching between main memory and -disk. -For read-heavy workloads, where the working set size is much larger than what -can be cached in main memory, using cache devices allow much more of this -working set to be served from low latency media. -Using cache devices provides the greatest performance improvement for random -read-workloads of mostly static content. -.Pp -To create a pool with cache devices, specify a -.Sy cache -vdev with any number of devices. -For example: -.Bd -literal -# zpool create pool sda sdb cache sdc sdd -.Ed -.Pp -Cache devices cannot be mirrored or part of a raidz configuration. -If a read error is encountered on a cache device, that read I/O is reissued to -the original storage pool device, which might be part of a mirrored or raidz -configuration. -.Pp -The content of the cache devices is considered volatile, as is the case with -other system caches. -.Ss Pool checkpoint -Before starting critical procedures that include destructive actions (e.g -.Nm zfs Cm destroy -), an administrator can checkpoint the pool's state and in the case of a -mistake or failure, rewind the entire pool back to the checkpoint. -Otherwise, the checkpoint can be discarded when the procedure has completed -successfully. -.Pp -A pool checkpoint can be thought of as a pool-wide snapshot and should be used -with care as it contains every part of the pool's state, from properties to vdev -configuration. -Thus, while a pool has a checkpoint certain operations are not allowed. -Specifically, vdev removal/attach/detach, mirror splitting, and -changing the pool's guid. -Adding a new vdev is supported but in the case of a rewind it will have to be -added again. -Finally, users of this feature should keep in mind that scrubs in a pool that -has a checkpoint do not repair checkpointed data. -.Pp -To create a checkpoint for a pool: -.Bd -literal -# zpool checkpoint pool -.Ed -.Pp -To later rewind to its checkpointed state, you need to first export it and -then rewind it during import: -.Bd -literal -# zpool export pool -# zpool import --rewind-to-checkpoint pool -.Ed -.Pp -To discard the checkpoint from a pool: -.Bd -literal -# zpool checkpoint -d pool -.Ed -.Pp -Dataset reservations (controlled by the -.Nm reservation -or -.Nm refreservation -zfs properties) may be unenforceable while a checkpoint exists, because the -checkpoint is allowed to consume the dataset's reservation. -Finally, data that is part of the checkpoint but has been freed in the -current state of the pool won't be scanned during a scrub. -.Ss Special Allocation Class -The allocations in the special class are dedicated to specific block types. -By default this includes all metadata, the indirect blocks of user data, and -any deduplication tables. The class can also be provisioned to accept -small file blocks. -.Pp -A pool must always have at least one normal (non-dedup/special) vdev before -other devices can be assigned to the special class. If the special class -becomes full, then allocations intended for it will spill back into the -normal class. -.Pp -Deduplication tables can be excluded from the special class by setting the -.Sy zfs_ddt_data_is_special -zfs module parameter to false (0). -.Pp -Inclusion of small file blocks in the special class is opt-in. Each dataset -can control the size of small file blocks allowed in the special class by -setting the -.Sy special_small_blocks -dataset property. It defaults to zero, so you must opt-in by setting it to a -non-zero value. See -.Xr zfs 8 -for more info on setting this property. -.Ss Properties -Each pool has several properties associated with it. -Some properties are read-only statistics while others are configurable and -change the behavior of the pool. -.Pp -The following are read-only properties: -.Bl -tag -width Ds -.It Cm allocated -Amount of storage used within the pool. -See -.Sy fragmentation -and -.Sy free -for more information. -.It Sy capacity -Percentage of pool space used. -This property can also be referred to by its shortened column name, -.Sy cap . -.It Sy expandsize -Amount of uninitialized space within the pool or device that can be used to -increase the total capacity of the pool. -Uninitialized space consists of any space on an EFI labeled vdev which has not -been brought online -.Po e.g, using -.Nm zpool Cm online Fl e -.Pc . -This space occurs when a LUN is dynamically expanded. -.It Sy fragmentation -The amount of fragmentation in the pool. As the amount of space -.Sy allocated -increases, it becomes more difficult to locate -.Sy free -space. This may result in lower write performance compared to pools with more -unfragmented free space. -.It Sy free -The amount of free space available in the pool. -By contrast, the -.Xr zfs 8 -.Sy available -property describes how much new data can be written to ZFS filesystems/volumes. -The zpool -.Sy free -property is not generally useful for this purpose, and can be substantially more than the zfs -.Sy available -space. This discrepancy is due to several factors, including raidz party; zfs -reservation, quota, refreservation, and refquota properties; and space set aside by -.Sy spa_slop_shift -(see -.Xr zfs-module-parameters 5 -for more information). -.It Sy freeing -After a file system or snapshot is destroyed, the space it was using is -returned to the pool asynchronously. -.Sy freeing -is the amount of space remaining to be reclaimed. -Over time -.Sy freeing -will decrease while -.Sy free -increases. -.It Sy health -The current health of the pool. -Health can be one of -.Sy ONLINE , DEGRADED , FAULTED , OFFLINE, REMOVED , UNAVAIL . -.It Sy guid -A unique identifier for the pool. -.It Sy load_guid -A unique identifier for the pool. -Unlike the -.Sy guid -property, this identifier is generated every time we load the pool (e.g. does -not persist across imports/exports) and never changes while the pool is loaded -(even if a -.Sy reguid -operation takes place). -.It Sy size -Total size of the storage pool. -.It Sy unsupported@ Ns Em feature_guid -Information about unsupported features that are enabled on the pool. -See -.Xr zpool-features 5 -for details. -.El -.Pp -The space usage properties report actual physical space available to the -storage pool. -The physical space can be different from the total amount of space that any -contained datasets can actually use. -The amount of space used in a raidz configuration depends on the characteristics -of the data being written. -In addition, ZFS reserves some space for internal accounting that the -.Xr zfs 8 -command takes into account, but the -.Nm -command does not. -For non-full pools of a reasonable size, these effects should be invisible. -For small pools, or pools that are close to being completely full, these -discrepancies may become more noticeable. -.Pp -The following property can be set at creation time and import time: -.Bl -tag -width Ds -.It Sy altroot -Alternate root directory. -If set, this directory is prepended to any mount points within the pool. -This can be used when examining an unknown pool where the mount points cannot be -trusted, or in an alternate boot environment, where the typical paths are not -valid. -.Sy altroot -is not a persistent property. -It is valid only while the system is up. -Setting -.Sy altroot -defaults to using -.Sy cachefile Ns = Ns Sy none , -though this may be overridden using an explicit setting. -.El -.Pp -The following property can be set only at import time: -.Bl -tag -width Ds -.It Sy readonly Ns = Ns Sy on Ns | Ns Sy off -If set to -.Sy on , -the pool will be imported in read-only mode. -This property can also be referred to by its shortened column name, -.Sy rdonly . -.El -.Pp -The following properties can be set at creation time and import time, and later -changed with the -.Nm zpool Cm set -command: -.Bl -tag -width Ds -.It Sy ashift Ns = Ns Sy ashift -Pool sector size exponent, to the power of -.Sy 2 -(internally referred to as -.Sy ashift -). Values from 9 to 16, inclusive, are valid; also, the -value 0 (the default) means to auto-detect using the kernel's block -layer and a ZFS internal exception list. I/O operations will be aligned -to the specified size boundaries. Additionally, the minimum (disk) -write size will be set to the specified size, so this represents a -space vs. performance trade-off. For optimal performance, the pool -sector size should be greater than or equal to the sector size of the -underlying disks. The typical case for setting this property is when -performance is important and the underlying disks use 4KiB sectors but -report 512B sectors to the OS (for compatibility reasons); in that -case, set -.Sy ashift=12 -(which is 1<<12 = 4096). When set, this property is -used as the default hint value in subsequent vdev operations (add, -attach and replace). Changing this value will not modify any existing -vdev, not even on disk replacement; however it can be used, for -instance, to replace a dying 512B sectors disk with a newer 4KiB -sectors device: this will probably result in bad performance but at the -same time could prevent loss of data. -.It Sy autoexpand Ns = Ns Sy on Ns | Ns Sy off -Controls automatic pool expansion when the underlying LUN is grown. -If set to -.Sy on , -the pool will be resized according to the size of the expanded device. -If the device is part of a mirror or raidz then all devices within that -mirror/raidz group must be expanded before the new space is made available to -the pool. -The default behavior is -.Sy off . -This property can also be referred to by its shortened column name, -.Sy expand . -.It Sy autoreplace Ns = Ns Sy on Ns | Ns Sy off -Controls automatic device replacement. -If set to -.Sy off , -device replacement must be initiated by the administrator by using the -.Nm zpool Cm replace -command. -If set to -.Sy on , -any new device, found in the same physical location as a device that previously -belonged to the pool, is automatically formatted and replaced. -The default behavior is -.Sy off . -This property can also be referred to by its shortened column name, -.Sy replace . -Autoreplace can also be used with virtual disks (like device -mapper) provided that you use the /dev/disk/by-vdev paths setup by -vdev_id.conf. See the -.Xr vdev_id 8 -man page for more details. -Autoreplace and autoonline require the ZFS Event Daemon be configured and -running. See the -.Xr zed 8 -man page for more details. -.It Sy bootfs Ns = Ns Sy (unset) Ns | Ns Ar pool Ns / Ns Ar dataset -Identifies the default bootable dataset for the root pool. This property is -expected to be set mainly by the installation and upgrade programs. -Not all Linux distribution boot processes use the bootfs property. -.It Sy cachefile Ns = Ns Ar path Ns | Ns Sy none -Controls the location of where the pool configuration is cached. -Discovering all pools on system startup requires a cached copy of the -configuration data that is stored on the root file system. -All pools in this cache are automatically imported when the system boots. -Some environments, such as install and clustering, need to cache this -information in a different location so that pools are not automatically -imported. -Setting this property caches the pool configuration in a different location that -can later be imported with -.Nm zpool Cm import Fl c . -Setting it to the value -.Sy none -creates a temporary pool that is never cached, and the -.Qq -.Pq empty string -uses the default location. -.Pp -Multiple pools can share the same cache file. -Because the kernel destroys and recreates this file when pools are added and -removed, care should be taken when attempting to access this file. -When the last pool using a -.Sy cachefile -is exported or destroyed, the file will be empty. -.It Sy comment Ns = Ns Ar text -A text string consisting of printable ASCII characters that will be stored -such that it is available even if the pool becomes faulted. -An administrator can provide additional information about a pool using this -property. -.It Sy dedupditto Ns = Ns Ar number -This property is deprecated and no longer has any effect. -.It Sy delegation Ns = Ns Sy on Ns | Ns Sy off -Controls whether a non-privileged user is granted access based on the dataset -permissions defined on the dataset. -See -.Xr zfs 8 -for more information on ZFS delegated administration. -.It Sy failmode Ns = Ns Sy wait Ns | Ns Sy continue Ns | Ns Sy panic -Controls the system behavior in the event of catastrophic pool failure. -This condition is typically a result of a loss of connectivity to the underlying -storage device(s) or a failure of all devices within the pool. -The behavior of such an event is determined as follows: -.Bl -tag -width "continue" -.It Sy wait -Blocks all I/O access until the device connectivity is recovered and the errors -are cleared. -This is the default behavior. -.It Sy continue -Returns -.Er EIO -to any new write I/O requests but allows reads to any of the remaining healthy -devices. -Any write requests that have yet to be committed to disk would be blocked. -.It Sy panic -Prints out a message to the console and generates a system crash dump. -.El -.It Sy autotrim Ns = Ns Sy on Ns | Ns Sy off -When set to -.Sy on -space which has been recently freed, and is no longer allocated by the pool, -will be periodically trimmed. This allows block device vdevs which support -BLKDISCARD, such as SSDs, or file vdevs on which the underlying file system -supports hole-punching, to reclaim unused blocks. The default setting for -this property is -.Sy off . -.Pp -Automatic TRIM does not immediately reclaim blocks after a free. Instead, -it will optimistically delay allowing smaller ranges to be aggregated in to -a few larger ones. These can then be issued more efficiently to the storage. -.Pp -Be aware that automatic trimming of recently freed data blocks can put -significant stress on the underlying storage devices. This will vary -depending of how well the specific device handles these commands. For -lower end devices it is often possible to achieve most of the benefits -of automatic trimming by running an on-demand (manual) TRIM periodically -using the -.Nm zpool Cm trim -command. -.It Sy feature@ Ns Ar feature_name Ns = Ns Sy enabled -The value of this property is the current state of -.Ar feature_name . -The only valid value when setting this property is -.Sy enabled -which moves -.Ar feature_name -to the enabled state. -See -.Xr zpool-features 5 -for details on feature states. -.It Sy listsnapshots Ns = Ns Sy on Ns | Ns Sy off -Controls whether information about snapshots associated with this pool is -output when -.Nm zfs Cm list -is run without the -.Fl t -option. -The default value is -.Sy off . -This property can also be referred to by its shortened name, -.Sy listsnaps . -.It Sy multihost Ns = Ns Sy on Ns | Ns Sy off -Controls whether a pool activity check should be performed during -.Nm zpool Cm import . -When a pool is determined to be active it cannot be imported, even with the -.Fl f -option. This property is intended to be used in failover configurations -where multiple hosts have access to a pool on shared storage. -.Pp -Multihost provides protection on import only. It does not protect against an -individual device being used in multiple pools, regardless of the type of vdev. -See the discussion under -.Sy zpool create. -.Pp -When this property is on, periodic writes to storage occur to show the pool is -in use. See -.Sy zfs_multihost_interval -in the -.Xr zfs-module-parameters 5 -man page. In order to enable this property each host must set a unique hostid. -See -.Xr genhostid 1 -.Xr zgenhostid 8 -.Xr spl-module-parameters 5 -for additional details. The default value is -.Sy off . -.It Sy version Ns = Ns Ar version -The current on-disk version of the pool. -This can be increased, but never decreased. -The preferred method of updating pools is with the -.Nm zpool Cm upgrade -command, though this property can be used when a specific version is needed for -backwards compatibility. -Once feature flags are enabled on a pool this property will no longer have a -value. -.El -.Ss Subcommands +For an overview of creating and managing ZFS storage pools see the +.Xr zpoolconcepts 8 +manual page. +.Sh SUBCOMMANDS All subcommands that modify state are logged persistently to the pool in their original form. .Pp @@ -944,395 +79,60 @@ An alias for the subcommand. .It Xo .Nm -.Cm add -.Op Fl fgLnP -.Oo Fl o Ar property Ns = Ns Ar value Oc -.Ar pool vdev Ns ... +.Cm version .Xc -Adds the specified virtual devices to the given pool. -The -.Ar vdev -specification is described in the -.Sx Virtual Devices -section. -The behavior of the -.Fl f -option, and the device checks performed are described in the -.Nm zpool Cm create -subcommand. -.Bl -tag -width Ds -.It Fl f -Forces use of -.Ar vdev Ns s , -even if they appear in use or specify a conflicting replication level. -Not all devices can be overridden in this manner. -.It Fl g -Display -.Ar vdev , -GUIDs instead of the normal device names. These GUIDs can be used in place of -device names for the zpool detach/offline/remove/replace commands. -.It Fl L -Display real paths for -.Ar vdev Ns s -resolving all symbolic links. This can be used to look up the current block -device name regardless of the /dev/disk/ path used to open it. -.It Fl n -Displays the configuration that would be used without actually adding the -.Ar vdev Ns s . -The actual pool creation can still fail due to insufficient privileges or -device sharing. -.It Fl P -Display real paths for -.Ar vdev Ns s -instead of only the last component of the path. This can be used in -conjunction with the -.Fl L -flag. -.It Fl o Ar property Ns = Ns Ar value -Sets the given pool properties. See the -.Sx Properties -section for a list of valid properties that can be set. The only property -supported at the moment is ashift. -.El -.It Xo +Displays the software version of the .Nm -.Cm attach -.Op Fl fw -.Oo Fl o Ar property Ns = Ns Ar value Oc -.Ar pool device new_device -.Xc -Attaches -.Ar new_device -to the existing -.Ar device . -The existing device cannot be part of a raidz configuration. -If -.Ar device -is not currently part of a mirrored configuration, -.Ar device -automatically transforms into a two-way mirror of -.Ar device -and -.Ar new_device . -If -.Ar device -is part of a two-way mirror, attaching -.Ar new_device -creates a three-way mirror, and so on. -In either case, -.Ar new_device -begins to resilver immediately. -.Bl -tag -width Ds -.It Fl f -Forces use of -.Ar new_device , -even if it appears to be in use. -Not all devices can be overridden in this manner. -.It Fl w -Waits until -.Ar new_device -has finished resilvering before returning. -.It Fl o Ar property Ns = Ns Ar value -Sets the given pool properties. See the -.Sx Properties -section for a list of valid properties that can be set. The only property -supported at the moment is ashift. +userland utility and the zfs kernel module. .El -.It Xo -.Nm -.Cm checkpoint -.Op Fl d, -discard Oo Fl w, -wait Oc -.Ar pool -.Xc -Checkpoints the current state of -.Ar pool -, which can be later restored by -.Nm zpool Cm import --rewind-to-checkpoint . -The existence of a checkpoint in a pool prohibits the following -.Nm zpool -commands: -.Cm remove , -.Cm attach , -.Cm detach , -.Cm split , -and -.Cm reguid . -In addition, it may break reservation boundaries if the pool lacks free -space. -The -.Nm zpool Cm status -command indicates the existence of a checkpoint or the progress of discarding a -checkpoint from a pool. -The -.Nm zpool Cm list -command reports how much space the checkpoint takes from the pool. +.Ss Creation .Bl -tag -width Ds -.It Fl d, -discard -Discards an existing checkpoint from -.Ar pool . -.It Fl w, -wait -Waits until the checkpoint has finished being discarded before returning. -.El -.It Xo -.Nm -.Cm clear -.Ar pool -.Op Ar device -.Xc -Clears device errors in a pool. -If no arguments are specified, all device errors within the pool are cleared. -If one or more devices is specified, only those errors associated with the -specified device or devices are cleared. -If multihost is enabled, and the pool has been suspended, this will not -resume I/O. While the pool was suspended, it may have been imported on -another host, and resuming I/O could result in pool damage. -.It Xo -.Nm -.Cm create -.Op Fl dfn -.Op Fl m Ar mountpoint -.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... -.Oo Fl o Ar feature@feature Ns = Ns Ar value Oc Ns ... -.Oo Fl O Ar file-system-property Ns = Ns Ar value Oc Ns ... -.Op Fl R Ar root -.Op Fl t Ar tname -.Ar pool vdev Ns ... -.Xc +.It Xr zpool-create 8 Creates a new storage pool containing the virtual devices specified on the command line. -The pool name must begin with a letter, and can only contain -alphanumeric characters as well as underscore -.Pq Qq Sy _ , -dash -.Pq Qq Sy \&- , -colon -.Pq Qq Sy \&: , -space -.Pq Qq Sy \&\ , -and period -.Pq Qq Sy \&. . -The pool names -.Sy mirror , -.Sy raidz , -.Sy spare -and -.Sy log -are reserved, as are names beginning with -.Sy mirror , -.Sy raidz , -.Sy spare , -and the pattern -.Sy c[0-9] . -The -.Ar vdev -specification is described in the -.Sx Virtual Devices -section. -.Pp -The command attempts to verify that each device specified is accessible and not -currently in use by another subsystem. However this check is not robust enough -to detect simultaneous attempts to use a new device in different pools, even if -.Sy multihost -is -.Sy enabled. -The -administrator must ensure that simultaneous invocations of any combination of -.Sy zpool replace , -.Sy zpool create , -.Sy zpool add , -or -.Sy zpool labelclear , -do not refer to the same device. Using the same device in two pools will -result in pool corruption. -.Pp -There are some uses, such as being currently mounted, or specified as the -dedicated dump device, that prevents a device from ever being used by ZFS. -Other uses, such as having a preexisting UFS file system, can be overridden with -the -.Fl f -option. -.Pp -The command also checks that the replication strategy for the pool is -consistent. -An attempt to combine redundant and non-redundant storage in a single pool, or -to mix disks and files, results in an error unless -.Fl f -is specified. -The use of differently sized devices within a single raidz or mirror group is -also flagged as an error unless -.Fl f -is specified. -.Pp -Unless the -.Fl R -option is specified, the default mount point is -.Pa / Ns Ar pool . -The mount point must not exist or must be empty, or else the root dataset -cannot be mounted. -This can be overridden with the -.Fl m -option. -.Pp -By default all supported features are enabled on the new pool unless the -.Fl d -option is specified. -.Bl -tag -width Ds -.It Fl d -Do not enable any features on the new pool. -Individual features can be enabled by setting their corresponding properties to -.Sy enabled -with the -.Fl o -option. -See -.Xr zpool-features 5 -for details about feature properties. -.It Fl f -Forces use of -.Ar vdev Ns s , -even if they appear in use or specify a conflicting replication level. -Not all devices can be overridden in this manner. -.It Fl m Ar mountpoint -Sets the mount point for the root dataset. -The default mount point is -.Pa /pool -or -.Pa altroot/pool -if -.Ar altroot -is specified. -The mount point must be an absolute path, -.Sy legacy , -or -.Sy none . -For more information on dataset mount points, see -.Xr zfs 8 . -.It Fl n -Displays the configuration that would be used without actually creating the -pool. -The actual pool creation can still fail due to insufficient privileges or -device sharing. -.It Fl o Ar property Ns = Ns Ar value -Sets the given pool properties. -See the -.Sx Properties -section for a list of valid properties that can be set. -.It Fl o Ar feature@feature Ns = Ns Ar value -Sets the given pool feature. See the -.Xr zpool-features 5 -section for a list of valid features that can be set. -Value can be either disabled or enabled. -.It Fl O Ar file-system-property Ns = Ns Ar value -Sets the given file system properties in the root file system of the pool. -See the -.Sx Properties -section of -.Xr zfs 8 -for a list of valid properties that can be set. -.It Fl R Ar root -Equivalent to -.Fl o Sy cachefile Ns = Ns Sy none Fl o Sy altroot Ns = Ns Ar root -.It Fl t Ar tname -Sets the in-core pool name to -.Sy tname -while the on-disk name will be the name specified as the pool name -.Sy pool . -This will set the default cachefile property to none. This is intended -to handle name space collisions when creating pools for other systems, -such as virtual machines or physical machines whose pools live on network -block devices. +.It Xr zpool-initialize 8 +Begins initializing by writing to all unallocated regions on the specified +devices, or all eligible devices in the pool if no individual devices are +specified. .El -.It Xo -.Nm -.Cm destroy -.Op Fl f -.Ar pool -.Xc -Destroys the given pool, freeing up any devices for other use. -This command tries to unmount any active datasets before destroying the pool. +.Ss Destruction .Bl -tag -width Ds -.It Fl f -Forces any active datasets contained within the pool to be unmounted. +.It Xr zpool-destroy 8 +Destroys the given pool, freeing up any devices for other use. +.It Xr zpool-labelclear 8 +Removes ZFS label information from the specified +.Ar device . .El +.Ss Virtual Devices +.Bl -tag -width Ds .It Xo -.Nm -.Cm detach -.Ar pool device +.Xr zpool-attach 8 / +.Xr zpool-detach 8 .Xc -Detaches -.Ar device -from a mirror. -The operation is refused if there are no other valid replicas of the data. -If device may be re-added to the pool later on then consider the -.Sy zpool offline -command instead. +Increases or decreases redundancy by +.Cm attach Ns -ing or +.Cm detach Ns -ing a device on an existing vdev (virtual device). .It Xo -.Nm -.Cm events -.Op Fl vHf Oo Ar pool Oc | Fl c +.Xr zpool-add 8 / +.Xr zpool-remove 8 .Xc -Lists all recent events generated by the ZFS kernel modules. These events -are consumed by the -.Xr zed 8 -and used to automate administrative tasks such as replacing a failed device -with a hot spare. For more information about the subclasses and event payloads -that can be generated see the -.Xr zfs-events 5 -man page. -.Bl -tag -width Ds -.It Fl c -Clear all previous events. -.It Fl f -Follow mode. -.It Fl H -Scripted mode. Do not display headers, and separate fields by a -single tab instead of arbitrary space. -.It Fl v -Print the entire payload for each event. +Adds the specified virtual devices to the given pool, +or removes the specified device from the pool. +.It Xr zpool-replace 8 +Replaces an existing device (which may be faulted) with a new one. +.It Xr zpool-split 8 +Creates a new pool by splitting all mirrors in an existing pool (which decreases its redundancy). .El -.It Xo -.Nm -.Cm export -.Op Fl a -.Op Fl f -.Ar pool Ns ... -.Xc -Exports the given pools from the system. -All devices are marked as exported, but are still considered in use by other -subsystems. -The devices can be moved between systems -.Pq even those of different endianness -and imported as long as a sufficient number of devices are present. -.Pp -Before exporting the pool, all datasets within the pool are unmounted. -A pool can not be exported if it has a shared spare that is currently being -used. -.Pp -For pools to be portable, you must give the -.Nm -command whole disks, not just partitions, so that ZFS can label the disks with -portable EFI labels. -Otherwise, disk drivers on platforms of different endianness will not recognize -the disks. +.Ss Properties +Available pool properties listed in the +.Xr zpoolprops 8 +manual page. .Bl -tag -width Ds -.It Fl a -Exports all pools imported on the system. -.It Fl f -Forcefully unmount all datasets, using the -.Nm unmount Fl f -command. -.Pp -This command will forcefully export the pool even if it has a shared spare that -is currently being used. -This may lead to potential data corruption. -.El +.It Xr zpool-list 8 +Lists the given pools along with a health status and space usage. .It Xo -.Nm -.Cm get -.Op Fl Hp -.Op Fl o Ar field Ns Oo , Ns Ar field Oc Ns ... -.Sy all Ns | Ns Ar property Ns Oo , Ns Ar property Oc Ns ... -.Oo Ar pool Oc Ns ... +.Xr zpool-get 8 / +.Xr zpool-set 8 .Xc Retrieves the given list of properties .Po @@ -1341,1228 +141,78 @@ or all properties if is used .Pc for the specified storage pool(s). -These properties are displayed with the following fields: -.Bd -literal - name Name of storage pool - property Property name - value Property value - source Property source, either 'default' or 'local'. -.Ed -.Pp -See the -.Sx Properties -section for more information on the available pool properties. -.Bl -tag -width Ds -.It Fl H -Scripted mode. -Do not display headers, and separate fields by a single tab instead of arbitrary -space. -.It Fl o Ar field -A comma-separated list of columns to display. -.Sy name Ns \&, Ns Sy property Ns \&, Ns Sy value Ns \&, Ns Sy source -is the default value. -.It Fl p -Display numbers in parsable (exact) values. -.El -.It Xo -.Nm -.Cm history -.Op Fl il -.Oo Ar pool Oc Ns ... -.Xc -Displays the command history of the specified pool(s) or all pools if no pool is -specified. -.Bl -tag -width Ds -.It Fl i -Displays internally logged ZFS events in addition to user initiated events. -.It Fl l -Displays log records in long format, which in addition to standard format -includes, the user name, the hostname, and the zone in which the operation was -performed. -.El -.It Xo -.Nm -.Cm import -.Op Fl D -.Op Fl d Ar dir Ns | Ns device -.Xc -Lists pools available to import. -If the -.Fl d -option is not specified, this command searches for devices in -.Pa /dev . -The -.Fl d -option can be specified multiple times, and all directories are searched. -If the device appears to be part of an exported pool, this command displays a -summary of the pool with the name of the pool, a numeric identifier, as well as -the vdev layout and current health of the device for each device or file. -Destroyed pools, pools that were previously destroyed with the -.Nm zpool Cm destroy -command, are not listed unless the -.Fl D -option is specified. -.Pp -The numeric identifier is unique, and can be used instead of the pool name when -multiple exported pools of the same name are available. -.Bl -tag -width Ds -.It Fl c Ar cachefile -Reads configuration from the given -.Ar cachefile -that was created with the -.Sy cachefile -pool property. -This -.Ar cachefile -is used instead of searching for devices. -.It Fl d Ar dir Ns | Ns Ar device -Uses -.Ar device -or searches for devices or files in -.Ar dir . -The -.Fl d -option can be specified multiple times. -.It Fl D -Lists destroyed pools only. -.El -.It Xo -.Nm -.Cm import -.Fl a -.Op Fl DflmN -.Op Fl F Oo Fl n Oc Oo Fl T Oc Oo Fl X Oc -.Op Fl c Ar cachefile Ns | Ns Fl d Ar dir Ns | Ns device -.Op Fl o Ar mntopts -.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... -.Op Fl R Ar root -.Op Fl s -.Xc -Imports all pools found in the search directories. -Identical to the previous command, except that all pools with a sufficient -number of devices available are imported. -Destroyed pools, pools that were previously destroyed with the -.Nm zpool Cm destroy -command, will not be imported unless the -.Fl D -option is specified. -.Bl -tag -width Ds -.It Fl a -Searches for and imports all pools found. -.It Fl c Ar cachefile -Reads configuration from the given -.Ar cachefile -that was created with the -.Sy cachefile -pool property. -This -.Ar cachefile -is used instead of searching for devices. -.It Fl d Ar dir Ns | Ns Ar device -Uses -.Ar device -or searches for devices or files in -.Ar dir . -The -.Fl d -option can be specified multiple times. -This option is incompatible with the -.Fl c -option. -.It Fl D -Imports destroyed pools only. -The -.Fl f -option is also required. -.It Fl f -Forces import, even if the pool appears to be potentially active. -.It Fl F -Recovery mode for a non-importable pool. -Attempt to return the pool to an importable state by discarding the last few -transactions. -Not all damaged pools can be recovered by using this option. -If successful, the data from the discarded transactions is irretrievably lost. -This option is ignored if the pool is importable or already imported. -.It Fl l -Indicates that this command will request encryption keys for all encrypted -datasets it attempts to mount as it is bringing the pool online. Note that if -any datasets have a -.Sy keylocation -of -.Sy prompt -this command will block waiting for the keys to be entered. Without this flag -encrypted datasets will be left unavailable until the keys are loaded. -.It Fl m -Allows a pool to import when there is a missing log device. -Recent transactions can be lost because the log device will be discarded. -.It Fl n -Used with the -.Fl F -recovery option. -Determines whether a non-importable pool can be made importable again, but does -not actually perform the pool recovery. -For more details about pool recovery mode, see the -.Fl F -option, above. -.It Fl N -Import the pool without mounting any file systems. -.It Fl o Ar mntopts -Comma-separated list of mount options to use when mounting datasets within the -pool. -See -.Xr zfs 8 -for a description of dataset properties and mount options. -.It Fl o Ar property Ns = Ns Ar value -Sets the specified property on the imported pool. -See the -.Sx Properties -section for more information on the available pool properties. -.It Fl R Ar root -Sets the -.Sy cachefile -property to -.Sy none -and the -.Sy altroot -property to -.Ar root . -.It Fl -rewind-to-checkpoint -Rewinds pool to the checkpointed state. -Once the pool is imported with this flag there is no way to undo the rewind. -All changes and data that were written after the checkpoint are lost! -The only exception is when the -.Sy readonly -mounting option is enabled. -In this case, the checkpointed state of the pool is opened and an -administrator can see how the pool would look like if they were -to fully rewind. -.It Fl s -Scan using the default search path, the libblkid cache will not be -consulted. A custom search path may be specified by setting the -ZPOOL_IMPORT_PATH environment variable. -.It Fl X -Used with the -.Fl F -recovery option. Determines whether extreme -measures to find a valid txg should take place. This allows the pool to -be rolled back to a txg which is no longer guaranteed to be consistent. -Pools imported at an inconsistent txg may contain uncorrectable -checksum errors. For more details about pool recovery mode, see the -.Fl F -option, above. WARNING: This option can be extremely hazardous to the -health of your pool and should only be used as a last resort. -.It Fl T -Specify the txg to use for rollback. Implies -.Fl FX . -For more details -about pool recovery mode, see the -.Fl X -option, above. WARNING: This option can be extremely hazardous to the -health of your pool and should only be used as a last resort. .El -.It Xo -.Nm -.Cm import -.Op Fl Dflm -.Op Fl F Oo Fl n Oc Oo Fl t Oc Oo Fl T Oc Oo Fl X Oc -.Op Fl c Ar cachefile Ns | Ns Fl d Ar dir Ns | Ns device -.Op Fl o Ar mntopts -.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... -.Op Fl R Ar root -.Op Fl s -.Ar pool Ns | Ns Ar id -.Op Ar newpool -.Xc -Imports a specific pool. -A pool can be identified by its name or the numeric identifier. -If -.Ar newpool -is specified, the pool is imported using the name -.Ar newpool . -Otherwise, it is imported with the same name as its exported name. -.Pp -If a device is removed from a system without running -.Nm zpool Cm export -first, the device appears as potentially active. -It cannot be determined if this was a failed export, or whether the device is -really in use from another host. -To import a pool in this state, the -.Fl f -option is required. +.Ss Monitoring .Bl -tag -width Ds -.It Fl c Ar cachefile -Reads configuration from the given -.Ar cachefile -that was created with the -.Sy cachefile -pool property. -This -.Ar cachefile -is used instead of searching for devices. -.It Fl d Ar dir Ns | Ns Ar device -Uses -.Ar device -or searches for devices or files in -.Ar dir . -The -.Fl d -option can be specified multiple times. -This option is incompatible with the -.Fl c -option. -.It Fl D -Imports destroyed pool. -The -.Fl f -option is also required. -.It Fl f -Forces import, even if the pool appears to be potentially active. -.It Fl F -Recovery mode for a non-importable pool. -Attempt to return the pool to an importable state by discarding the last few -transactions. -Not all damaged pools can be recovered by using this option. -If successful, the data from the discarded transactions is irretrievably lost. -This option is ignored if the pool is importable or already imported. -.It Fl l -Indicates that this command will request encryption keys for all encrypted -datasets it attempts to mount as it is bringing the pool online. Note that if -any datasets have a -.Sy keylocation -of -.Sy prompt -this command will block waiting for the keys to be entered. Without this flag -encrypted datasets will be left unavailable until the keys are loaded. -.It Fl m -Allows a pool to import when there is a missing log device. -Recent transactions can be lost because the log device will be discarded. -.It Fl n -Used with the -.Fl F -recovery option. -Determines whether a non-importable pool can be made importable again, but does -not actually perform the pool recovery. -For more details about pool recovery mode, see the -.Fl F -option, above. -.It Fl o Ar mntopts -Comma-separated list of mount options to use when mounting datasets within the -pool. -See -.Xr zfs 8 -for a description of dataset properties and mount options. -.It Fl o Ar property Ns = Ns Ar value -Sets the specified property on the imported pool. -See the -.Sx Properties -section for more information on the available pool properties. -.It Fl R Ar root -Sets the -.Sy cachefile -property to -.Sy none -and the -.Sy altroot -property to -.Ar root . -.It Fl s -Scan using the default search path, the libblkid cache will not be -consulted. A custom search path may be specified by setting the -ZPOOL_IMPORT_PATH environment variable. -.It Fl X -Used with the -.Fl F -recovery option. Determines whether extreme -measures to find a valid txg should take place. This allows the pool to -be rolled back to a txg which is no longer guaranteed to be consistent. -Pools imported at an inconsistent txg may contain uncorrectable -checksum errors. For more details about pool recovery mode, see the -.Fl F -option, above. WARNING: This option can be extremely hazardous to the -health of your pool and should only be used as a last resort. -.It Fl T -Specify the txg to use for rollback. Implies -.Fl FX . -For more details -about pool recovery mode, see the -.Fl X -option, above. WARNING: This option can be extremely hazardous to the -health of your pool and should only be used as a last resort. -.It Fl t -Used with -.Sy newpool . -Specifies that -.Sy newpool -is temporary. Temporary pool names last until export. Ensures that -the original pool name will be used in all label updates and therefore -is retained upon export. -Will also set -o cachefile=none when not explicitly specified. -.El -.It Xo -.Nm -.Cm initialize -.Op Fl c | Fl s -.Op Fl w -.Ar pool -.Op Ar device Ns ... -.Xc -Begins initializing by writing to all unallocated regions on the specified -devices, or all eligible devices in the pool if no individual devices are -specified. -Only leaf data or log devices may be initialized. -.Bl -tag -width Ds -.It Fl c, -cancel -Cancel initializing on the specified devices, or all eligible devices if none -are specified. -If one or more target devices are invalid or are not currently being -initialized, the command will fail and no cancellation will occur on any device. -.It Fl s -suspend -Suspend initializing on the specified devices, or all eligible devices if none -are specified. -If one or more target devices are invalid or are not currently being -initialized, the command will fail and no suspension will occur on any device. -Initializing can then be resumed by running -.Nm zpool Cm initialize -with no flags on the relevant target devices. -.It Fl w, -wait -Wait until the devices have finished initializing before returning. -.El -.It Xo -.Nm -.Cm iostat -.Op Oo Oo Fl c Ar SCRIPT Oc Oo Fl lq Oc Oc Ns | Ns Fl rw -.Op Fl T Sy u Ns | Ns Sy d -.Op Fl ghHLnpPvy -.Oo Oo Ar pool Ns ... Oc Ns | Ns Oo Ar pool vdev Ns ... Oc Ns | Ns Oo Ar vdev Ns ... Oc Oc -.Op Ar interval Op Ar count -.Xc +.It Xr zpool-status 8 +Displays the detailed health status for the given pools. +.It Xr zpool-iostat 8 Displays logical I/O statistics for the given pools/vdevs. Physical I/Os may be observed via .Xr iostat 1 . -If writes are located nearby, they may be merged into a single -larger operation. Additional I/O may be generated depending on the level of -vdev redundancy. -To filter output, you may pass in a list of pools, a pool and list of vdevs -in that pool, or a list of any vdevs from any pool. If no items are specified, -statistics for every pool in the system are shown. -When given an -.Ar interval , -the statistics are printed every -.Ar interval -seconds until ^C is pressed. If -.Fl n -flag is specified the headers are displayed only once, otherwise they are -displayed periodically. If count is specified, the command exits -after count reports are printed. The first report printed is always -the statistics since boot regardless of whether -.Ar interval -and -.Ar count -are passed. However, this behavior can be suppressed with the -.Fl y -flag. Also note that the units of -.Sy K , -.Sy M , -.Sy G ... -that are printed in the report are in base 1024. To get the raw -values, use the -.Fl p -flag. -.Bl -tag -width Ds -.It Fl c Op Ar SCRIPT1 Ns Oo , Ns Ar SCRIPT2 Oc Ns ... -Run a script (or scripts) on each vdev and include the output as a new column -in the -.Nm zpool Cm iostat -output. Users can run any script found in their -.Pa ~/.zpool.d -directory or from the system -.Pa /etc/zfs/zpool.d -directory. Script names containing the slash (/) character are not allowed. -The default search path can be overridden by setting the -ZPOOL_SCRIPTS_PATH environment variable. A privileged user can run -.Fl c -if they have the ZPOOL_SCRIPTS_AS_ROOT -environment variable set. If a script requires the use of a privileged -command, like -.Xr smartctl 8 , -then it's recommended you allow the user access to it in -.Pa /etc/sudoers -or add the user to the -.Pa /etc/sudoers.d/zfs -file. -.Pp -If -.Fl c -is passed without a script name, it prints a list of all scripts. -.Fl c -also sets verbose mode -.No \&( Ns Fl v Ns No \&). -.Pp -Script output should be in the form of "name=value". The column name is -set to "name" and the value is set to "value". Multiple lines can be -used to output multiple columns. The first line of output not in the -"name=value" format is displayed without a column title, and no more -output after that is displayed. This can be useful for printing error -messages. Blank or NULL values are printed as a '-' to make output -awk-able. -.Pp -The following environment variables are set before running each script: -.Bl -tag -width "VDEV_PATH" -.It Sy VDEV_PATH -Full path to the vdev -.El -.Bl -tag -width "VDEV_UPATH" -.It Sy VDEV_UPATH -Underlying path to the vdev (/dev/sd*). For use with device mapper, -multipath, or partitioned vdevs. -.El -.Bl -tag -width "VDEV_ENC_SYSFS_PATH" -.It Sy VDEV_ENC_SYSFS_PATH -The sysfs path to the enclosure for the vdev (if any). -.El -.It Fl T Sy u Ns | Ns Sy d -Display a time stamp. -Specify -.Sy u -for a printed representation of the internal representation of time. -See -.Xr time 2 . -Specify -.Sy d -for standard date format. -See -.Xr date 1 . -.It Fl g -Display vdev GUIDs instead of the normal device names. These GUIDs -can be used in place of device names for the zpool -detach/offline/remove/replace commands. -.It Fl H -Scripted mode. Do not display headers, and separate fields by a -single tab instead of arbitrary space. -.It Fl L -Display real paths for vdevs resolving all symbolic links. This can -be used to look up the current block device name regardless of the -.Pa /dev/disk/ -path used to open it. -.It Fl n -Print headers only once when passed -.It Fl p -Display numbers in parsable (exact) values. Time values are in -nanoseconds. -.It Fl P -Display full paths for vdevs instead of only the last component of -the path. This can be used in conjunction with the -.Fl L -flag. -.It Fl r -Print request size histograms for the leaf vdev's IO. This includes -histograms of individual IOs (ind) and aggregate IOs (agg). These stats -can be useful for observing how well IO aggregation is working. Note -that TRIM IOs may exceed 16M, but will be counted as 16M. -.It Fl v -Verbose statistics Reports usage statistics for individual vdevs within the -pool, in addition to the pool-wide statistics. -.It Fl y -Omit statistics since boot. -Normally the first line of output reports the statistics since boot. -This option suppresses that first line of output. -.Ar interval -.It Fl w -Display latency histograms: -.Pp -.Ar total_wait : -Total IO time (queuing + disk IO time). -.Ar disk_wait : -Disk IO time (time reading/writing the disk). -.Ar syncq_wait : -Amount of time IO spent in synchronous priority queues. Does not include -disk time. -.Ar asyncq_wait : -Amount of time IO spent in asynchronous priority queues. Does not include -disk time. -.Ar scrub : -Amount of time IO spent in scrub queue. Does not include disk time. -.It Fl l -Include average latency statistics: -.Pp -.Ar total_wait : -Average total IO time (queuing + disk IO time). -.Ar disk_wait : -Average disk IO time (time reading/writing the disk). -.Ar syncq_wait : -Average amount of time IO spent in synchronous priority queues. Does -not include disk time. -.Ar asyncq_wait : -Average amount of time IO spent in asynchronous priority queues. -Does not include disk time. -.Ar scrub : -Average queuing time in scrub queue. Does not include disk time. -.Ar trim : -Average queuing time in trim queue. Does not include disk time. -.It Fl q -Include active queue statistics. Each priority queue has both -pending ( -.Ar pend ) -and active ( -.Ar activ ) -IOs. Pending IOs are waiting to -be issued to the disk, and active IOs have been issued to disk and are -waiting for completion. These stats are broken out by priority queue: -.Pp -.Ar syncq_read/write : -Current number of entries in synchronous priority -queues. -.Ar asyncq_read/write : -Current number of entries in asynchronous priority queues. -.Ar scrubq_read : -Current number of entries in scrub queue. -.Ar trimq_write : -Current number of entries in trim queue. -.Pp -All queue statistics are instantaneous measurements of the number of -entries in the queues. If you specify an interval, the measurements -will be sampled from the end of the interval. -.El -.It Xo -.Nm -.Cm labelclear -.Op Fl f -.Ar device -.Xc -Removes ZFS label information from the specified -.Ar device . -The -.Ar device -must not be part of an active pool configuration. -.Bl -tag -width Ds -.It Fl f -Treat exported or foreign devices as inactive. -.El -.It Xo -.Nm -.Cm list -.Op Fl HgLpPv -.Op Fl o Ar property Ns Oo , Ns Ar property Oc Ns ... -.Op Fl T Sy u Ns | Ns Sy d -.Oo Ar pool Oc Ns ... -.Op Ar interval Op Ar count -.Xc -Lists the given pools along with a health status and space usage. -If no -.Ar pool Ns s -are specified, all pools in the system are listed. -When given an -.Ar interval , -the information is printed every -.Ar interval -seconds until ^C is pressed. -If -.Ar count -is specified, the command exits after -.Ar count -reports are printed. -.Bl -tag -width Ds -.It Fl g -Display vdev GUIDs instead of the normal device names. These GUIDs -can be used in place of device names for the zpool -detach/offline/remove/replace commands. -.It Fl H -Scripted mode. -Do not display headers, and separate fields by a single tab instead of arbitrary -space. -.It Fl o Ar property -Comma-separated list of properties to display. -See the -.Sx Properties -section for a list of valid properties. -The default list is -.Cm name , size , allocated , free , checkpoint, expandsize , fragmentation , -.Cm capacity , dedupratio , health , altroot . -.It Fl L -Display real paths for vdevs resolving all symbolic links. This can -be used to look up the current block device name regardless of the -/dev/disk/ path used to open it. -.It Fl p -Display numbers in parsable -.Pq exact -values. -.It Fl P -Display full paths for vdevs instead of only the last component of -the path. This can be used in conjunction with the -.Fl L -flag. -.It Fl T Sy u Ns | Ns Sy d -Display a time stamp. -Specify -.Sy u -for a printed representation of the internal representation of time. -See -.Xr time 2 . -Specify -.Sy d -for standard date format. -See -.Xr date 1 . -.It Fl v -Verbose statistics. -Reports usage statistics for individual vdevs within the pool, in addition to -the pool-wise statistics. -.El -.It Xo -.Nm -.Cm offline -.Op Fl f -.Op Fl t -.Ar pool Ar device Ns ... -.Xc -Takes the specified physical device offline. -While the -.Ar device -is offline, no attempt is made to read or write to the device. -This command is not applicable to spares. -.Bl -tag -width Ds -.It Fl f -Force fault. Instead of offlining the disk, put it into a faulted -state. The fault will persist across imports unless the -.Fl t -flag was specified. -.It Fl t -Temporary. -Upon reboot, the specified physical device reverts to its previous state. -.El -.It Xo -.Nm -.Cm online -.Op Fl e -.Ar pool Ar device Ns ... -.Xc -Brings the specified physical device online. -This command is not applicable to spares. -.Bl -tag -width Ds -.It Fl e -Expand the device to use all available space. -If the device is part of a mirror or raidz then all devices must be expanded -before the new space will become available to the pool. -.El -.It Xo -.Nm -.Cm reguid -.Ar pool -.Xc -Generates a new unique identifier for the pool. -You must ensure that all devices in this pool are online and healthy before -performing this action. -.It Xo -.Nm -.Cm reopen -.Op Fl n -.Ar pool -.Xc -Reopen all the vdevs associated with the pool. -.Bl -tag -width Ds -.It Fl n -Do not restart an in-progress scrub operation. This is not recommended and can -result in partially resilvered devices unless a second scrub is performed. -.El -.It Xo -.Nm -.Cm remove -.Op Fl npw -.Ar pool Ar device Ns ... -.Xc -Removes the specified device from the pool. -This command supports removing hot spare, cache, log, and both mirrored and -non-redundant primary top-level vdevs, including dedup and special vdevs. -When the primary pool storage includes a top-level raidz vdev only hot spare, -cache, and log devices can be removed. -.sp -Removing a top-level vdev reduces the total amount of space in the storage pool. -The specified device will be evacuated by copying all allocated space from it to -the other devices in the pool. -In this case, the -.Nm zpool Cm remove -command initiates the removal and returns, while the evacuation continues in -the background. -The removal progress can be monitored with -.Nm zpool Cm status . -If an IO error is encountered during the removal process it will be -cancelled. The -.Sy device_removal -feature flag must be enabled to remove a top-level vdev, see -.Xr zpool-features 5 . -.Pp -A mirrored top-level device (log or data) can be removed by specifying the top-level mirror for the -same. -Non-log devices or data devices that are part of a mirrored configuration can be removed using -the -.Nm zpool Cm detach -command. -.Bl -tag -width Ds -.It Fl n -Do not actually perform the removal ("no-op"). -Instead, print the estimated amount of memory that will be used by the -mapping table after the removal completes. -This is nonzero only for top-level vdevs. -.El -.Bl -tag -width Ds -.It Fl p -Used in conjunction with the -.Fl n -flag, displays numbers as parsable (exact) values. -.It Fl w -Waits until the removal has completed before returning. +.It Xr zpool-events 8 +Lists all recent events generated by the ZFS kernel modules. These events +are consumed by the +.Xr zed 8 +and used to automate administrative tasks such as replacing a failed device +with a hot spare. For more information about the subclasses and event payloads +that can be generated see the +.Xr zfs-events 5 +man page. +.It Xr zpool-history 8 +Displays the command history of the specified pool(s) or all pools if no pool is +specified. .El -.It Xo -.Nm -.Cm remove -.Fl s -.Ar pool -.Xc -Stops and cancels an in-progress removal of a top-level vdev. -.It Xo -.Nm -.Cm replace -.Op Fl fw -.Op Fl o Ar property Ns = Ns Ar value -.Ar pool Ar device Op Ar new_device -.Xc -Replaces -.Ar old_device -with -.Ar new_device . -This is equivalent to attaching -.Ar new_device , -waiting for it to resilver, and then detaching -.Ar old_device . -.Pp -The size of -.Ar new_device -must be greater than or equal to the minimum size of all the devices in a mirror -or raidz configuration. -.Pp -.Ar new_device -is required if the pool is not redundant. -If -.Ar new_device -is not specified, it defaults to -.Ar old_device . -This form of replacement is useful after an existing disk has failed and has -been physically replaced. -In this case, the new disk may have the same -.Pa /dev -path as the old device, even though it is actually a different disk. -ZFS recognizes this. +.Ss Maintenance .Bl -tag -width Ds -.It Fl f -Forces use of -.Ar new_device , -even if it appears to be in use. -Not all devices can be overridden in this manner. -.It Fl o Ar property Ns = Ns Ar value -Sets the given pool properties. See the -.Sx Properties -section for a list of valid properties that can be set. -The only property supported at the moment is -.Sy ashift . -.It Fl w -Waits until the replacement has completed before returning. -.El -.It Xo -.Nm -.Cm scrub -.Op Fl s | Fl p -.Op Fl w -.Ar pool Ns ... -.Xc +.It Xr zpool-scrub 8 Begins a scrub or resumes a paused scrub. -The scrub examines all data in the specified pools to verify that it checksums -correctly. -For replicated -.Pq mirror or raidz -devices, ZFS automatically repairs any damage discovered during the scrub. -The -.Nm zpool Cm status -command reports the progress of the scrub and summarizes the results of the -scrub upon completion. -.Pp -Scrubbing and resilvering are very similar operations. -The difference is that resilvering only examines data that ZFS knows to be out -of date -.Po -for example, when attaching a new device to a mirror or replacing an existing -device -.Pc , -whereas scrubbing examines all data to discover silent errors due to hardware -faults or disk failure. -.Pp -Because scrubbing and resilvering are I/O-intensive operations, ZFS only allows -one at a time. -If a scrub is paused, the -.Nm zpool Cm scrub -resumes it. -If a resilver is in progress, ZFS does not allow a scrub to be started until the -resilver completes. -.Pp -Note that, due to changes in pool data on a live system, it is possible for -scrubs to progress slightly beyond 100% completion. During this period, no -completion time estimate will be provided. -.Bl -tag -width Ds -.It Fl s -Stop scrubbing. -.El -.Bl -tag -width Ds -.It Fl p -Pause scrubbing. -Scrub pause state and progress are periodically synced to disk. -If the system is restarted or pool is exported during a paused scrub, -even after import, scrub will remain paused until it is resumed. -Once resumed the scrub will pick up from the place where it was last -checkpointed to disk. -To resume a paused scrub issue -.Nm zpool Cm scrub -again. -.It Fl w -Wait until scrub has completed before returning. -.El -.It Xo -.Nm -.Cm resilver -.Ar pool Ns ... -.Xc -Starts a resilver. If an existing resilver is already running it will be -restarted from the beginning. Any drives that were scheduled for a deferred -resilver will be added to the new one. This requires the -.Sy resilver_defer -feature. -.It Xo -.Nm -.Cm trim -.Op Fl d -.Op Fl c | Fl s +.It Xr zpool-checkpoint 8 +Checkpoints the current state of .Ar pool -.Op Ar device Ns ... -.Xc +, which can be later restored by +.Nm zpool Cm import --rewind-to-checkpoint . +.It Xr zpool-trim 8 Initiates an immediate on-demand TRIM operation for all of the free space in a pool. This operation informs the underlying storage devices of all blocks in the pool which are no longer allocated and allows thinly provisioned devices to reclaim the space. -.Pp -A manual on-demand TRIM operation can be initiated irrespective of the -.Sy autotrim -pool property setting. See the documentation for the -.Sy autotrim -property above for the types of vdev devices which can be trimmed. -.Bl -tag -width Ds -.It Fl d -secure -Causes a secure TRIM to be initiated. When performing a secure TRIM, the -device guarantees that data stored on the trimmed blocks has been erased. -This requires support from the device and is not supported by all SSDs. -.It Fl r -rate Ar rate -Controls the rate at which the TRIM operation progresses. Without this -option TRIM is executed as quickly as possible. The rate, expressed in bytes -per second, is applied on a per-vdev basis and may be set differently for -each leaf vdev. -.It Fl c, -cancel -Cancel trimming on the specified devices, or all eligible devices if none -are specified. -If one or more target devices are invalid or are not currently being -trimmed, the command will fail and no cancellation will occur on any device. -.It Fl s -suspend -Suspend trimming on the specified devices, or all eligible devices if none -are specified. -If one or more target devices are invalid or are not currently being -trimmed, the command will fail and no suspension will occur on any device. -Trimming can then be resumed by running -.Nm zpool Cm trim -with no flags on the relevant target devices. -.El -.It Xo -.Nm -.Cm set -.Ar property Ns = Ns Ar value -.Ar pool -.Xc -Sets the given property on the specified pool. -See the -.Sx Properties -section for more information on what properties can be set and acceptable -values. -.It Xo -.Nm -.Cm split -.Op Fl gLlnP -.Oo Fl o Ar property Ns = Ns Ar value Oc Ns ... -.Op Fl R Ar root -.Ar pool newpool -.Op Ar device ... -.Xc -Splits devices off -.Ar pool -creating -.Ar newpool . -All vdevs in -.Ar pool -must be mirrors and the pool must not be in the process of resilvering. -At the time of the split, -.Ar newpool -will be a replica of -.Ar pool . -By default, the -last device in each mirror is split from -.Ar pool -to create -.Ar newpool . -.Pp -The optional device specification causes the specified device(s) to be -included in the new -.Ar pool -and, should any devices remain unspecified, -the last device in each mirror is used as would be by default. -.Bl -tag -width Ds -.It Fl g -Display vdev GUIDs instead of the normal device names. These GUIDs -can be used in place of device names for the zpool -detach/offline/remove/replace commands. -.It Fl L -Display real paths for vdevs resolving all symbolic links. This can -be used to look up the current block device name regardless of the -.Pa /dev/disk/ -path used to open it. -.It Fl l -Indicates that this command will request encryption keys for all encrypted -datasets it attempts to mount as it is bringing the new pool online. Note that -if any datasets have a -.Sy keylocation -of -.Sy prompt -this command will block waiting for the keys to be entered. Without this flag -encrypted datasets will be left unavailable until the keys are loaded. -.It Fl n -Do dry run, do not actually perform the split. -Print out the expected configuration of -.Ar newpool . -.It Fl P -Display full paths for vdevs instead of only the last component of -the path. This can be used in conjunction with the -.Fl L -flag. -.It Fl o Ar property Ns = Ns Ar value -Sets the specified property for -.Ar newpool . -See the -.Sx Properties -section for more information on the available pool properties. -.It Fl R Ar root -Set -.Sy altroot -for -.Ar newpool -to -.Ar root -and automatically import it. -.El -.It Xo -.Nm -.Cm status -.Op Fl c Op Ar SCRIPT1 Ns Oo , Ns Ar SCRIPT2 Oc Ns ... -.Op Fl DigLpPstvx -.Op Fl T Sy u Ns | Ns Sy d -.Oo Ar pool Oc Ns ... -.Op Ar interval Op Ar count -.Xc -Displays the detailed health status for the given pools. -If no -.Ar pool -is specified, then the status of each pool in the system is displayed. -For more information on pool and device health, see the -.Sx Device Failure and Recovery -section. -.Pp -If a scrub or resilver is in progress, this command reports the percentage done -and the estimated time to completion. -Both of these are only approximate, because the amount of data in the pool and -the other workloads on the system can change. -.Bl -tag -width Ds -.It Fl c Op Ar SCRIPT1 Ns Oo , Ns Ar SCRIPT2 Oc Ns ... -Run a script (or scripts) on each vdev and include the output as a new column -in the -.Nm zpool Cm status -output. See the -.Fl c -option of -.Nm zpool Cm iostat -for complete details. -.It Fl i -Display vdev initialization status. -.It Fl g -Display vdev GUIDs instead of the normal device names. These GUIDs -can be used in place of device names for the zpool -detach/offline/remove/replace commands. -.It Fl L -Display real paths for vdevs resolving all symbolic links. This can -be used to look up the current block device name regardless of the -.Pa /dev/disk/ -path used to open it. -.It Fl p -Display numbers in parsable (exact) values. -.It Fl P -Display full paths for vdevs instead of only the last component of -the path. This can be used in conjunction with the -.Fl L -flag. -.It Fl D -Display a histogram of deduplication statistics, showing the allocated -.Pq physically present on disk -and referenced -.Pq logically referenced in the pool -block counts and sizes by reference count. -.It Fl s -Display the number of leaf VDEV slow IOs. This is the number of IOs that -didn't complete in \fBzio_slow_io_ms\fR milliseconds (default 30 seconds). -This does not necessarily mean the IOs failed to complete, just took an -unreasonably long amount of time. This may indicate a problem with the -underlying storage. -.It Fl t -Display vdev TRIM status. -.It Fl T Sy u Ns | Ns Sy d -Display a time stamp. -Specify -.Sy u -for a printed representation of the internal representation of time. -See -.Xr time 2 . -Specify -.Sy d -for standard date format. -See -.Xr date 1 . -.It Fl v -Displays verbose data error information, printing out a complete list of all -data errors since the last complete pool scrub. -.It Fl x -Only display status for pools that are exhibiting errors or are otherwise -unavailable. -Warnings about pools not using the latest on-disk format will not be included. -.El -.It Xo -.Nm -.Cm sync -.Op Ar pool ... -.Xc +.It Xr zpool-sync 8 This command forces all in-core dirty data to be written to the primary pool storage and not the ZIL. It will also update administrative information including quota reporting. Without arguments, .Sy zpool sync will sync all pools on the system. Otherwise, it will sync only the specified pool(s). -.It Xo -.Nm -.Cm upgrade -.Xc -Displays pools which do not have all supported features enabled and pools -formatted using a legacy ZFS version number. -These pools can continue to be used, but some features may not be available. -Use -.Nm zpool Cm upgrade Fl a -to enable all features on all pools. -.It Xo -.Nm -.Cm upgrade -.Fl v -.Xc -Displays legacy ZFS versions supported by the current software. -See -.Xr zpool-features 5 -for a description of feature flags features supported by the current software. -.It Xo -.Nm -.Cm upgrade -.Op Fl V Ar version -.Fl a Ns | Ns Ar pool Ns ... -.Xc -Enables all supported features on the given pool. -Once this is done, the pool will no longer be accessible on systems that do not -support feature flags. -See -.Xr zpool-features 5 -for details on compatibility with systems that support feature flags, but do not -support all features enabled on the pool. -.Bl -tag -width Ds -.It Fl a -Enables all supported features on all pools. -.It Fl V Ar version -Upgrade to the specified legacy version. -If the -.Fl V -flag is specified, no features will be enabled on the pool. -This option can only be used to increase the version number up to the last -supported legacy version number. -.El -.It Xo -.Nm -.Cm version -.Xc -Displays the software version of the -.Nm -userland utility and the zfs kernel module. -.It Xo -.Nm -.Cm wait -.Op Fl Hp -.Op Fl T Sy u Ns | Ns Sy d -.Op Fl t Ar activity Ns Oo , Ns Ar activity Ns Oc Ns ... -.Ar pool -.Op Ar interval -.Xc +.It Xr zpool-upgrade 8 +Manage the on-disk format version of storage pools. +.It Xr zpool-wait 8 Waits until all background activity of the given types has ceased in the given pool. -The activity could cease because it has completed, or because it has been -paused or canceled by a user, or because the pool has been exported or -destroyed. -If no activities are specified, the command waits until background activity of -every type listed below has ceased. -If there is no activity of the given types in progress, the command returns -immediately. -.Pp -These are the possible values for -.Ar activity , -along with what each one waits for: -.Bd -literal - discard Checkpoint to be discarded - free 'freeing' property to become 0 - initialize All initializations to cease - replace All device replacements to cease - remove Device removal to cease - resilver Resilver to cease - scrub Scrub to cease -.Ed -.Pp -If an -.Ar interval -is provided, the amount of work remaining, in bytes, for each activity is -printed every -.Ar interval -seconds. +.El +.Ss Fault Resolution .Bl -tag -width Ds -.It Fl H -Scripted mode. -Do not display headers, and separate fields by a single tab instead of arbitrary -space. -.It Fl p -Display numbers in parsable (exact) values. -.It Fl T Sy u Ns | Ns Sy d -Display a time stamp. -Specify -.Sy u -for a printed representation of the internal representation of time. -See -.Xr time 2 . -Specify -.Sy d -for standard date format. -See -.Xr date 1 . +.It Xo +.Xr zpool-offline 8 +.Xr zpool-online 8 +.Xc +Takes the specified physical device offline or brings it online. +.It Xr zpool-resilver 8 +Starts a resilver. If an existing resilver is already running it will be +restarted from the beginning. +.It Xr zpool-reopen 8 +Reopen all the vdevs associated with the pool. +.It Xr zpool-clear 8 +Clears device errors in a pool. .El +.Ss Import & Export +.Bl -tag -width Ds +.It Xr zpool-import 8 +Make disks containing ZFS storage pools available for use on the system. +.It Xr zpool-export 8 +Exports the given pools from the system. +.It Xr zpool-reguid 8 +Generates a new unique identifier for the pool. .El .Sh EXIT STATUS The following exit values are returned: @@ -2902,6 +552,8 @@ is not set, it is assumed that the user is allowed to run .Sh INTERFACE STABILITY .Sy Evolving .Sh SEE ALSO +.Xr zpoolconcepts 8 , +.Xr zpoolprops 8 , .Xr zfs-events 5 , .Xr zfs-module-parameters 5 , .Xr zpool-features 5 , diff --git a/man/man8/zpoolconcepts.8 b/man/man8/zpoolconcepts.8 new file mode 100644 index 000000000..60845eef2 --- /dev/null +++ b/man/man8/zpoolconcepts.8 @@ -0,0 +1,394 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOLCONCEPTS 8 +.Os Linux +.Sh NAME +.Nm zpoolconcepts +.Nd overview of ZFS storage pools +.Sh DESCRIPTION +.Ss Virtual Devices (vdevs) +A "virtual device" describes a single device or a collection of devices +organized according to certain performance and fault characteristics. +The following virtual devices are supported: +.Bl -tag -width Ds +.It Sy disk +A block device, typically located under +.Pa /dev . +ZFS can use individual slices or partitions, though the recommended mode of +operation is to use whole disks. +A disk can be specified by a full path, or it can be a shorthand name +.Po the relative portion of the path under +.Pa /dev +.Pc . +A whole disk can be specified by omitting the slice or partition designation. +For example, +.Pa sda +is equivalent to +.Pa /dev/sda . +When given a whole disk, ZFS automatically labels the disk, if necessary. +.It Sy file +A regular file. +The use of files as a backing store is strongly discouraged. +It is designed primarily for experimental purposes, as the fault tolerance of a +file is only as good as the file system of which it is a part. +A file must be specified by a full path. +.It Sy mirror +A mirror of two or more devices. +Data is replicated in an identical fashion across all components of a mirror. +A mirror with N disks of size X can hold X bytes and can withstand (N-1) devices +failing before data integrity is compromised. +.It Sy raidz , raidz1 , raidz2 , raidz3 +A variation on RAID-5 that allows for better distribution of parity and +eliminates the RAID-5 +.Qq write hole +.Pq in which data and parity become inconsistent after a power loss . +Data and parity is striped across all disks within a raidz group. +.Pp +A raidz group can have single-, double-, or triple-parity, meaning that the +raidz group can sustain one, two, or three failures, respectively, without +losing any data. +The +.Sy raidz1 +vdev type specifies a single-parity raidz group; the +.Sy raidz2 +vdev type specifies a double-parity raidz group; and the +.Sy raidz3 +vdev type specifies a triple-parity raidz group. +The +.Sy raidz +vdev type is an alias for +.Sy raidz1 . +.Pp +A raidz group with N disks of size X with P parity disks can hold approximately +(N-P)*X bytes and can withstand P device(s) failing before data integrity is +compromised. +The minimum number of devices in a raidz group is one more than the number of +parity disks. +The recommended number is between 3 and 9 to help increase performance. +.It Sy spare +A pseudo-vdev which keeps track of available hot spares for a pool. +For more information, see the +.Sx Hot Spares +section. +.It Sy log +A separate intent log device. +If more than one log device is specified, then writes are load-balanced between +devices. +Log devices can be mirrored. +However, raidz vdev types are not supported for the intent log. +For more information, see the +.Sx Intent Log +section. +.It Sy dedup +A device dedicated solely for deduplication tables. +The redundancy of this device should match the redundancy of the other normal +devices in the pool. If more than one dedup device is specified, then +allocations are load-balanced between those devices. +.It Sy special +A device dedicated solely for allocating various kinds of internal metadata, +and optionally small file blocks. +The redundancy of this device should match the redundancy of the other normal +devices in the pool. If more than one special device is specified, then +allocations are load-balanced between those devices. +.Pp +For more information on special allocations, see the +.Sx Special Allocation Class +section. +.It Sy cache +A device used to cache storage pool data. +A cache device cannot be configured as a mirror or raidz group. +For more information, see the +.Sx Cache Devices +section. +.El +.Pp +Virtual devices cannot be nested, so a mirror or raidz virtual device can only +contain files or disks. +Mirrors of mirrors +.Pq or other combinations +are not allowed. +.Pp +A pool can have any number of virtual devices at the top of the configuration +.Po known as +.Qq root vdevs +.Pc . +Data is dynamically distributed across all top-level devices to balance data +among devices. +As new virtual devices are added, ZFS automatically places data on the newly +available devices. +.Pp +Virtual devices are specified one at a time on the command line, separated by +whitespace. +The keywords +.Sy mirror +and +.Sy raidz +are used to distinguish where a group ends and another begins. +For example, the following creates two root vdevs, each a mirror of two disks: +.Bd -literal +# zpool create mypool mirror sda sdb mirror sdc sdd +.Ed +.Ss Device Failure and Recovery +ZFS supports a rich set of mechanisms for handling device failure and data +corruption. +All metadata and data is checksummed, and ZFS automatically repairs bad data +from a good copy when corruption is detected. +.Pp +In order to take advantage of these features, a pool must make use of some form +of redundancy, using either mirrored or raidz groups. +While ZFS supports running in a non-redundant configuration, where each root +vdev is simply a disk or file, this is strongly discouraged. +A single case of bit corruption can render some or all of your data unavailable. +.Pp +A pool's health status is described by one of three states: online, degraded, +or faulted. +An online pool has all devices operating normally. +A degraded pool is one in which one or more devices have failed, but the data is +still available due to a redundant configuration. +A faulted pool has corrupted metadata, or one or more faulted devices, and +insufficient replicas to continue functioning. +.Pp +The health of the top-level vdev, such as mirror or raidz device, is +potentially impacted by the state of its associated vdevs, or component +devices. +A top-level vdev or component device is in one of the following states: +.Bl -tag -width "DEGRADED" +.It Sy DEGRADED +One or more top-level vdevs is in the degraded state because one or more +component devices are offline. +Sufficient replicas exist to continue functioning. +.Pp +One or more component devices is in the degraded or faulted state, but +sufficient replicas exist to continue functioning. +The underlying conditions are as follows: +.Bl -bullet +.It +The number of checksum errors exceeds acceptable levels and the device is +degraded as an indication that something may be wrong. +ZFS continues to use the device as necessary. +.It +The number of I/O errors exceeds acceptable levels. +The device could not be marked as faulted because there are insufficient +replicas to continue functioning. +.El +.It Sy FAULTED +One or more top-level vdevs is in the faulted state because one or more +component devices are offline. +Insufficient replicas exist to continue functioning. +.Pp +One or more component devices is in the faulted state, and insufficient +replicas exist to continue functioning. +The underlying conditions are as follows: +.Bl -bullet +.It +The device could be opened, but the contents did not match expected values. +.It +The number of I/O errors exceeds acceptable levels and the device is faulted to +prevent further use of the device. +.El +.It Sy OFFLINE +The device was explicitly taken offline by the +.Nm zpool Cm offline +command. +.It Sy ONLINE +The device is online and functioning. +.It Sy REMOVED +The device was physically removed while the system was running. +Device removal detection is hardware-dependent and may not be supported on all +platforms. +.It Sy UNAVAIL +The device could not be opened. +If a pool is imported when a device was unavailable, then the device will be +identified by a unique identifier instead of its path since the path was never +correct in the first place. +.El +.Pp +If a device is removed and later re-attached to the system, ZFS attempts +to put the device online automatically. +Device attach detection is hardware-dependent and might not be supported on all +platforms. +.Ss Hot Spares +ZFS allows devices to be associated with pools as +.Qq hot spares . +These devices are not actively used in the pool, but when an active device +fails, it is automatically replaced by a hot spare. +To create a pool with hot spares, specify a +.Sy spare +vdev with any number of devices. +For example, +.Bd -literal +# zpool create pool mirror sda sdb spare sdc sdd +.Ed +.Pp +Spares can be shared across multiple pools, and can be added with the +.Nm zpool Cm add +command and removed with the +.Nm zpool Cm remove +command. +Once a spare replacement is initiated, a new +.Sy spare +vdev is created within the configuration that will remain there until the +original device is replaced. +At this point, the hot spare becomes available again if another device fails. +.Pp +If a pool has a shared spare that is currently being used, the pool can not be +exported since other pools may use this shared spare, which may lead to +potential data corruption. +.Pp +Shared spares add some risk. If the pools are imported on different hosts, and +both pools suffer a device failure at the same time, both could attempt to use +the spare at the same time. This may not be detected, resulting in data +corruption. +.Pp +An in-progress spare replacement can be cancelled by detaching the hot spare. +If the original faulted device is detached, then the hot spare assumes its +place in the configuration, and is removed from the spare list of all active +pools. +.Pp +Spares cannot replace log devices. +.Ss Intent Log +The ZFS Intent Log (ZIL) satisfies POSIX requirements for synchronous +transactions. +For instance, databases often require their transactions to be on stable storage +devices when returning from a system call. +NFS and other applications can also use +.Xr fsync 2 +to ensure data stability. +By default, the intent log is allocated from blocks within the main pool. +However, it might be possible to get better performance using separate intent +log devices such as NVRAM or a dedicated disk. +For example: +.Bd -literal +# zpool create pool sda sdb log sdc +.Ed +.Pp +Multiple log devices can also be specified, and they can be mirrored. +See the +.Sx EXAMPLES +section for an example of mirroring multiple log devices. +.Pp +Log devices can be added, replaced, attached, detached and removed. In +addition, log devices are imported and exported as part of the pool +that contains them. +Mirrored devices can be removed by specifying the top-level mirror vdev. +.Ss Cache Devices +Devices can be added to a storage pool as +.Qq cache devices . +These devices provide an additional layer of caching between main memory and +disk. +For read-heavy workloads, where the working set size is much larger than what +can be cached in main memory, using cache devices allow much more of this +working set to be served from low latency media. +Using cache devices provides the greatest performance improvement for random +read-workloads of mostly static content. +.Pp +To create a pool with cache devices, specify a +.Sy cache +vdev with any number of devices. +For example: +.Bd -literal +# zpool create pool sda sdb cache sdc sdd +.Ed +.Pp +Cache devices cannot be mirrored or part of a raidz configuration. +If a read error is encountered on a cache device, that read I/O is reissued to +the original storage pool device, which might be part of a mirrored or raidz +configuration. +.Pp +The content of the cache devices is considered volatile, as is the case with +other system caches. +.Ss Pool checkpoint +Before starting critical procedures that include destructive actions (e.g +.Nm zfs Cm destroy +), an administrator can checkpoint the pool's state and in the case of a +mistake or failure, rewind the entire pool back to the checkpoint. +Otherwise, the checkpoint can be discarded when the procedure has completed +successfully. +.Pp +A pool checkpoint can be thought of as a pool-wide snapshot and should be used +with care as it contains every part of the pool's state, from properties to vdev +configuration. +Thus, while a pool has a checkpoint certain operations are not allowed. +Specifically, vdev removal/attach/detach, mirror splitting, and +changing the pool's guid. +Adding a new vdev is supported but in the case of a rewind it will have to be +added again. +Finally, users of this feature should keep in mind that scrubs in a pool that +has a checkpoint do not repair checkpointed data. +.Pp +To create a checkpoint for a pool: +.Bd -literal +# zpool checkpoint pool +.Ed +.Pp +To later rewind to its checkpointed state, you need to first export it and +then rewind it during import: +.Bd -literal +# zpool export pool +# zpool import --rewind-to-checkpoint pool +.Ed +.Pp +To discard the checkpoint from a pool: +.Bd -literal +# zpool checkpoint -d pool +.Ed +.Pp +Dataset reservations (controlled by the +.Nm reservation +or +.Nm refreservation +zfs properties) may be unenforceable while a checkpoint exists, because the +checkpoint is allowed to consume the dataset's reservation. +Finally, data that is part of the checkpoint but has been freed in the +current state of the pool won't be scanned during a scrub. +.Ss Special Allocation Class +The allocations in the special class are dedicated to specific block types. +By default this includes all metadata, the indirect blocks of user data, and +any deduplication tables. The class can also be provisioned to accept +small file blocks. +.Pp +A pool must always have at least one normal (non-dedup/special) vdev before +other devices can be assigned to the special class. If the special class +becomes full, then allocations intended for it will spill back into the +normal class. +.Pp +Deduplication tables can be excluded from the special class by setting the +.Sy zfs_ddt_data_is_special +zfs module parameter to false (0). +.Pp +Inclusion of small file blocks in the special class is opt-in. Each dataset +can control the size of small file blocks allowed in the special class by +setting the +.Sy special_small_blocks +dataset property. It defaults to zero, so you must opt-in by setting it to a +non-zero value. See +.Xr zfs 8 +for more info on setting this property. diff --git a/man/man8/zpoolprops.8 b/man/man8/zpoolprops.8 new file mode 100644 index 000000000..f0522ef78 --- /dev/null +++ b/man/man8/zpoolprops.8 @@ -0,0 +1,366 @@ +.\" +.\" CDDL HEADER START +.\" +.\" The contents of this file are subject to the terms of the +.\" Common Development and Distribution License (the "License"). +.\" You may not use this file except in compliance with the License. +.\" +.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE +.\" or http://www.opensolaris.org/os/licensing. +.\" See the License for the specific language governing permissions +.\" and limitations under the License. +.\" +.\" When distributing Covered Code, include this CDDL HEADER in each +.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. +.\" If applicable, add the following below this CDDL HEADER, with the +.\" fields enclosed by brackets "[]" replaced with your own identifying +.\" information: Portions Copyright [yyyy] [name of copyright owner] +.\" +.\" CDDL HEADER END +.\" +.\" +.\" Copyright (c) 2007, Sun Microsystems, Inc. All Rights Reserved. +.\" Copyright (c) 2012, 2018 by Delphix. All rights reserved. +.\" Copyright (c) 2012 Cyril Plisko. All Rights Reserved. +.\" Copyright (c) 2017 Datto Inc. +.\" Copyright (c) 2018 George Melikov. All Rights Reserved. +.\" Copyright 2017 Nexenta Systems, Inc. +.\" Copyright (c) 2017 Open-E, Inc. All Rights Reserved. +.\" +.Dd August 9, 2019 +.Dt ZPOOLPROPS 8 +.Os Linux +.Sh NAME +.Nm zpoolprops +.Nd available properties for ZFS storage pools +.Sh DESCRIPTION +Each pool has several properties associated with it. +Some properties are read-only statistics while others are configurable and +change the behavior of the pool. +.Pp +The following are read-only properties: +.Bl -tag -width Ds +.It Cm allocated +Amount of storage used within the pool. +See +.Sy fragmentation +and +.Sy free +for more information. +.It Sy capacity +Percentage of pool space used. +This property can also be referred to by its shortened column name, +.Sy cap . +.It Sy expandsize +Amount of uninitialized space within the pool or device that can be used to +increase the total capacity of the pool. +Uninitialized space consists of any space on an EFI labeled vdev which has not +been brought online +.Po e.g, using +.Nm zpool Cm online Fl e +.Pc . +This space occurs when a LUN is dynamically expanded. +.It Sy fragmentation +The amount of fragmentation in the pool. As the amount of space +.Sy allocated +increases, it becomes more difficult to locate +.Sy free +space. This may result in lower write performance compared to pools with more +unfragmented free space. +.It Sy free +The amount of free space available in the pool. +By contrast, the +.Xr zfs 8 +.Sy available +property describes how much new data can be written to ZFS filesystems/volumes. +The zpool +.Sy free +property is not generally useful for this purpose, and can be substantially more than the zfs +.Sy available +space. This discrepancy is due to several factors, including raidz party; zfs +reservation, quota, refreservation, and refquota properties; and space set aside by +.Sy spa_slop_shift +(see +.Xr zfs-module-parameters 5 +for more information). +.It Sy freeing +After a file system or snapshot is destroyed, the space it was using is +returned to the pool asynchronously. +.Sy freeing +is the amount of space remaining to be reclaimed. +Over time +.Sy freeing +will decrease while +.Sy free +increases. +.It Sy health +The current health of the pool. +Health can be one of +.Sy ONLINE , DEGRADED , FAULTED , OFFLINE, REMOVED , UNAVAIL . +.It Sy guid +A unique identifier for the pool. +.It Sy load_guid +A unique identifier for the pool. +Unlike the +.Sy guid +property, this identifier is generated every time we load the pool (e.g. does +not persist across imports/exports) and never changes while the pool is loaded +(even if a +.Sy reguid +operation takes place). +.It Sy size +Total size of the storage pool. +.It Sy unsupported@ Ns Em feature_guid +Information about unsupported features that are enabled on the pool. +See +.Xr zpool-features 5 +for details. +.El +.Pp +The space usage properties report actual physical space available to the +storage pool. +The physical space can be different from the total amount of space that any +contained datasets can actually use. +The amount of space used in a raidz configuration depends on the characteristics +of the data being written. +In addition, ZFS reserves some space for internal accounting that the +.Xr zfs 8 +command takes into account, but the +.Nm +command does not. +For non-full pools of a reasonable size, these effects should be invisible. +For small pools, or pools that are close to being completely full, these +discrepancies may become more noticeable. +.Pp +The following property can be set at creation time and import time: +.Bl -tag -width Ds +.It Sy altroot +Alternate root directory. +If set, this directory is prepended to any mount points within the pool. +This can be used when examining an unknown pool where the mount points cannot be +trusted, or in an alternate boot environment, where the typical paths are not +valid. +.Sy altroot +is not a persistent property. +It is valid only while the system is up. +Setting +.Sy altroot +defaults to using +.Sy cachefile Ns = Ns Sy none , +though this may be overridden using an explicit setting. +.El +.Pp +The following property can be set only at import time: +.Bl -tag -width Ds +.It Sy readonly Ns = Ns Sy on Ns | Ns Sy off +If set to +.Sy on , +the pool will be imported in read-only mode. +This property can also be referred to by its shortened column name, +.Sy rdonly . +.El +.Pp +The following properties can be set at creation time and import time, and later +changed with the +.Nm zpool Cm set +command: +.Bl -tag -width Ds +.It Sy ashift Ns = Ns Sy ashift +Pool sector size exponent, to the power of +.Sy 2 +(internally referred to as +.Sy ashift +). Values from 9 to 16, inclusive, are valid; also, the +value 0 (the default) means to auto-detect using the kernel's block +layer and a ZFS internal exception list. I/O operations will be aligned +to the specified size boundaries. Additionally, the minimum (disk) +write size will be set to the specified size, so this represents a +space vs. performance trade-off. For optimal performance, the pool +sector size should be greater than or equal to the sector size of the +underlying disks. The typical case for setting this property is when +performance is important and the underlying disks use 4KiB sectors but +report 512B sectors to the OS (for compatibility reasons); in that +case, set +.Sy ashift=12 +(which is 1<<12 = 4096). When set, this property is +used as the default hint value in subsequent vdev operations (add, +attach and replace). Changing this value will not modify any existing +vdev, not even on disk replacement; however it can be used, for +instance, to replace a dying 512B sectors disk with a newer 4KiB +sectors device: this will probably result in bad performance but at the +same time could prevent loss of data. +.It Sy autoexpand Ns = Ns Sy on Ns | Ns Sy off +Controls automatic pool expansion when the underlying LUN is grown. +If set to +.Sy on , +the pool will be resized according to the size of the expanded device. +If the device is part of a mirror or raidz then all devices within that +mirror/raidz group must be expanded before the new space is made available to +the pool. +The default behavior is +.Sy off . +This property can also be referred to by its shortened column name, +.Sy expand . +.It Sy autoreplace Ns = Ns Sy on Ns | Ns Sy off +Controls automatic device replacement. +If set to +.Sy off , +device replacement must be initiated by the administrator by using the +.Nm zpool Cm replace +command. +If set to +.Sy on , +any new device, found in the same physical location as a device that previously +belonged to the pool, is automatically formatted and replaced. +The default behavior is +.Sy off . +This property can also be referred to by its shortened column name, +.Sy replace . +Autoreplace can also be used with virtual disks (like device +mapper) provided that you use the /dev/disk/by-vdev paths setup by +vdev_id.conf. See the +.Xr vdev_id 8 +man page for more details. +Autoreplace and autoonline require the ZFS Event Daemon be configured and +running. See the +.Xr zed 8 +man page for more details. +.It Sy autotrim Ns = Ns Sy on Ns | Ns Sy off +When set to +.Sy on +space which has been recently freed, and is no longer allocated by the pool, +will be periodically trimmed. This allows block device vdevs which support +BLKDISCARD, such as SSDs, or file vdevs on which the underlying file system +supports hole-punching, to reclaim unused blocks. The default setting for +this property is +.Sy off . +.Pp +Automatic TRIM does not immediately reclaim blocks after a free. Instead, +it will optimistically delay allowing smaller ranges to be aggregated in to +a few larger ones. These can then be issued more efficiently to the storage. +.Pp +Be aware that automatic trimming of recently freed data blocks can put +significant stress on the underlying storage devices. This will vary +depending of how well the specific device handles these commands. For +lower end devices it is often possible to achieve most of the benefits +of automatic trimming by running an on-demand (manual) TRIM periodically +using the +.Nm zpool Cm trim +command. +.It Sy bootfs Ns = Ns Sy (unset) Ns | Ns Ar pool Ns / Ns Ar dataset +Identifies the default bootable dataset for the root pool. This property is +expected to be set mainly by the installation and upgrade programs. +Not all Linux distribution boot processes use the bootfs property. +.It Sy cachefile Ns = Ns Ar path Ns | Ns Sy none +Controls the location of where the pool configuration is cached. +Discovering all pools on system startup requires a cached copy of the +configuration data that is stored on the root file system. +All pools in this cache are automatically imported when the system boots. +Some environments, such as install and clustering, need to cache this +information in a different location so that pools are not automatically +imported. +Setting this property caches the pool configuration in a different location that +can later be imported with +.Nm zpool Cm import Fl c . +Setting it to the value +.Sy none +creates a temporary pool that is never cached, and the +.Qq +.Pq empty string +uses the default location. +.Pp +Multiple pools can share the same cache file. +Because the kernel destroys and recreates this file when pools are added and +removed, care should be taken when attempting to access this file. +When the last pool using a +.Sy cachefile +is exported or destroyed, the file will be empty. +.It Sy comment Ns = Ns Ar text +A text string consisting of printable ASCII characters that will be stored +such that it is available even if the pool becomes faulted. +An administrator can provide additional information about a pool using this +property. +.It Sy dedupditto Ns = Ns Ar number +This property is deprecated and no longer has any effect. +.It Sy delegation Ns = Ns Sy on Ns | Ns Sy off +Controls whether a non-privileged user is granted access based on the dataset +permissions defined on the dataset. +See +.Xr zfs 8 +for more information on ZFS delegated administration. +.It Sy failmode Ns = Ns Sy wait Ns | Ns Sy continue Ns | Ns Sy panic +Controls the system behavior in the event of catastrophic pool failure. +This condition is typically a result of a loss of connectivity to the underlying +storage device(s) or a failure of all devices within the pool. +The behavior of such an event is determined as follows: +.Bl -tag -width "continue" +.It Sy wait +Blocks all I/O access until the device connectivity is recovered and the errors +are cleared. +This is the default behavior. +.It Sy continue +Returns +.Er EIO +to any new write I/O requests but allows reads to any of the remaining healthy +devices. +Any write requests that have yet to be committed to disk would be blocked. +.It Sy panic +Prints out a message to the console and generates a system crash dump. +.El +.It Sy feature@ Ns Ar feature_name Ns = Ns Sy enabled +The value of this property is the current state of +.Ar feature_name . +The only valid value when setting this property is +.Sy enabled +which moves +.Ar feature_name +to the enabled state. +See +.Xr zpool-features 5 +for details on feature states. +.It Sy listsnapshots Ns = Ns Sy on Ns | Ns Sy off +Controls whether information about snapshots associated with this pool is +output when +.Nm zfs Cm list +is run without the +.Fl t +option. +The default value is +.Sy off . +This property can also be referred to by its shortened name, +.Sy listsnaps . +.It Sy multihost Ns = Ns Sy on Ns | Ns Sy off +Controls whether a pool activity check should be performed during +.Nm zpool Cm import . +When a pool is determined to be active it cannot be imported, even with the +.Fl f +option. This property is intended to be used in failover configurations +where multiple hosts have access to a pool on shared storage. +.Pp +Multihost provides protection on import only. It does not protect against an +individual device being used in multiple pools, regardless of the type of vdev. +See the discussion under +.Sy zpool create. +.Pp +When this property is on, periodic writes to storage occur to show the pool is +in use. See +.Sy zfs_multihost_interval +in the +.Xr zfs-module-parameters 5 +man page. In order to enable this property each host must set a unique hostid. +See +.Xr genhostid 1 +.Xr zgenhostid 8 +.Xr spl-module-parameters 5 +for additional details. The default value is +.Sy off . +.It Sy version Ns = Ns Ar version +The current on-disk version of the pool. +This can be increased, but never decreased. +The preferred method of updating pools is with the +.Nm zpool Cm upgrade +command, though this property can be used when a specific version is needed for +backwards compatibility. +Once feature flags are enabled on a pool this property will no longer have a +value. +.El |