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* Disable mount(8) canonical paths in do_mount()LOLi2017-08-211-1/+2
| | | | | | | | | | | | | | | By default the mount(8) command, as invoked by 'zfs mount', will try to resolve any path parameter in its canonical form: this could lead to mount failures when the cwd contains a symlink having the same name of the dataset being mounted. Fix this by explicitly disabling mount(8) path canonicalization. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #1791 Closes #6429 Closes #6437
* Native Encryption for ZFS on LinuxTom Caputi2017-08-1413-88/+2404
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change incorporates three major pieces: The first change is a keystore that manages wrapping and encryption keys for encrypted datasets. These commands mostly involve manipulating the new DSL Crypto Key ZAP Objects that live in the MOS. Each encrypted dataset has its own DSL Crypto Key that is protected with a user's key. This level of indirection allows users to change their keys without re-encrypting their entire datasets. The change implements the new subcommands "zfs load-key", "zfs unload-key" and "zfs change-key" which allow the user to manage their encryption keys and settings. In addition, several new flags and properties have been added to allow dataset creation and to make mounting and unmounting more convenient. The second piece of this patch provides the ability to encrypt, decyrpt, and authenticate protected datasets. Each object set maintains a Merkel tree of Message Authentication Codes that protect the lower layers, similarly to how checksums are maintained. This part impacts the zio layer, which handles the actual encryption and generation of MACs, as well as the ARC and DMU, which need to be able to handle encrypted buffers and protected data. The last addition is the ability to do raw, encrypted sends and receives. The idea here is to send raw encrypted and compressed data and receive it exactly as is on a backup system. This means that the dataset on the receiving system is protected using the same user key that is in use on the sending side. By doing so, datasets can be efficiently backed up to an untrusted system without fear of data being compromised. Reviewed by: Matthew Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Jorgen Lundman <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #494 Closes #5769
* Allow longer SPA names in statsgaurkuma2017-08-111-1/+1
| | | | | | | | | | | | The pool name can be 256 chars long. Today, in /proc/spl/kstat/zfs/ the name is limited to < 32 characters. This change is to allows bigger pool names. Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: loli10K <[email protected]> Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: gaurkuma <[email protected]> Closes #6481
* Simplify threads, mutexs, cvs and rwlocksBrian Behlendorf2017-08-111-231/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Simplify threads, mutexs, cvs and rwlocks * Update the zk_thread_create() function to use the same trick as Illumos. Specifically, cast the new pthread_t to a void pointer and return that as the kthread_t *. This avoids the issues associated with managing a wrapper structure and is safe as long as the callers never attempt to dereference it. * Update all function prototypes passed to pthread_create() to match the expected prototype. We were getting away this with before since the function were explicitly cast. * Replaced direct zk_thread_create() calls with thread_create() for code consistency. All consumers of libzpool now use the proper wrappers. * The mutex_held() calls were converted to MUTEX_HELD(). * Removed all mutex_owner() calls and retired the interface. Instead use MUTEX_HELD() which provides the same information and allows the implementation details to be hidden. In this case the use of the pthread_equals() function. * The kthread_t, kmutex_t, krwlock_t, and krwlock_t types had any non essential fields removed. In the case of kthread_t and kcondvar_t they could be directly typedef'd to pthread_t and pthread_cond_t respectively. * Removed all extra ASSERTS from the thread, mutex, rwlock, and cv wrapper functions. In practice, pthreads already provides the vast majority of checks as long as we check the return code. Removing this code from our wrappers help readability. * Added TS_JOINABLE state flag to pass to request a joinable rather than detached thread. This isn't a standard thread_create() state but it's the least invasive way to pass this information and is only used by ztest. TEST_ZTEST_TIMEOUT=3600 Chunwei Chen <[email protected]> Reviewed-by: Tom Caputi <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4547 Closes #5503 Closes #5523 Closes #6377 Closes #6495
* Add libtpool (thread pools)Brian Behlendorf2017-08-0915-227/+931
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | OpenZFS provides a library called tpool which implements thread pools for user space applications. Porting this library means the zpool utility no longer needs to borrow the kernel mutex and taskq interfaces from libzpool. This code was updated to use the tpool library which behaves in a very similar fashion. Porting libtpool was relatively straight forward and minimal modifications were needed. The core changes were: * Fully convert the library to use pthreads. * Updated signal handling. * lmalloc/lfree converted to calloc/free * Implemented portable pthread_attr_clone() function. Finally, update the build system such that libzpool.so is no longer linked in to zfs(8), zpool(8), etc. All that is required is libzfs to which the zcommon soures were added (which is the way it always should have been). Removing the libzpool dependency resulted in several build issues which needed to be resolved. * Moved zfeature support to module/zcommon/zfeature_common.c * Moved ratelimiting to to module/zfs/zfs_ratelimit.c * Moved get_system_hostid() to lib/libspl/gethostid.c * Removed use of cmn_err() in zcommon source * Removed dprintf_setup() call from zpool_main.c and zfs_main.c * Removed highbit() and lowbit() * Removed unnecessary library dependencies from Makefiles * Removed fletcher-4 kstat in user space * Added sha2 support explicitly to libzfs * Added highbit64() and lowbit64() to zpool_util.c Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #6442
* Fix parsable 'zfs get' for compressratiosLOLi2017-08-031-3/+8
| | | | | | | | | | This is consistent with the change introduced in bc2d809 where 'zpool get -p dedupratio' does not add a trailing "x" to the output. Reviewed-by: Tony Hutter <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #6436 Closes #6449
* zfs promote|rename .../%recv should be an errorLOLi2017-07-281-0/+7
| | | | | | | | | | | | | | If we are in the middle of an incremental 'zfs receive', the child .../%recv will exist. If we run 'zfs promote' .../%recv, it will "work", but then zfs gets confused about the status of the new dataset. Attempting to do this promote should be an error. Similarly renaming .../%recv datasets should not be allowed. Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #4843 Closes #6339
* Add zgenhostid utility scriptOlaf Faaland2017-07-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Turning the multihost property on requires that a hostid be set to allow ZFS to determine when a foreign system is attemping to import a pool. The error message instructing the user to set a hostid refers to genhostid(1). Genhostid(1) is not available on SUSE Linux. This commit adds a script modeled after genhostid(1) for those users. Zgenhostid checks for an /etc/hostid file; if it does not exist, it creates one and stores a value. If the user has provided a hostid as an argument, that value is used. Otherwise, a random hostid is generated and stored. This differs from the CENTOS 6/7 versions of genhostid, which overwrite the /etc/hostid file even though their manpages state otherwise. A man page for zgenhostid is added. The one for genhostid is in (1), but I put zgenhostid in (8) because I believe it's more appropriate. The mmp tests are modified to use zgenhostid to set the hostid instead of using the spl_hostid module parameter. zgenhostid will not replace an existing /etc/hostid file, so new mmp_clear_hostid calls are required. Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Andreas Dilger <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Olaf Faaland <[email protected]> Closes #6358 Closes #6379
* Multi-modifier protection (MMP)Olaf Faaland2017-07-135-5/+161
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add multihost=on|off pool property to control MMP. When enabled a new thread writes uberblocks to the last slot in each label, at a set frequency, to indicate to other hosts the pool is actively imported. These uberblocks are the last synced uberblock with an updated timestamp. Property defaults to off. During tryimport, find the "best" uberblock (newest txg and timestamp) repeatedly, checking for change in the found uberblock. Include the results of the activity test in the config returned by tryimport. These results are reported to user in "zpool import". Allow the user to control the period between MMP writes, and the duration of the activity test on import, via a new module parameter zfs_multihost_interval. The period is specified in milliseconds. The activity test duration is calculated from this value, and from the mmp_delay in the "best" uberblock found initially. Add a kstat interface to export statistics about Multiple Modifier Protection (MMP) updates. Include the last synced txg number, the timestamp, the delay since the last MMP update, the VDEV GUID, the VDEV label that received the last MMP update, and the VDEV path. Abbreviated output below. $ cat /proc/spl/kstat/zfs/mypool/multihost 31 0 0x01 10 880 105092382393521 105144180101111 txg timestamp mmp_delay vdev_guid vdev_label vdev_path 20468 261337 250274925 68396651780 3 /dev/sda 20468 261339 252023374 6267402363293 1 /dev/sdc 20468 261340 252000858 6698080955233 1 /dev/sdx 20468 261341 251980635 783892869810 2 /dev/sdy 20468 261342 253385953 8923255792467 3 /dev/sdd 20468 261344 253336622 042125143176 0 /dev/sdab 20468 261345 253310522 1200778101278 2 /dev/sde 20468 261346 253286429 0950576198362 2 /dev/sdt 20468 261347 253261545 96209817917 3 /dev/sds 20468 261349 253238188 8555725937673 3 /dev/sdb Add a new tunable zfs_multihost_history to specify the number of MMP updates to store history for. By default it is set to zero meaning that no MMP statistics are stored. When using ztest to generate activity, for automated tests of the MMP function, some test functions interfere with the test. For example, the pool is exported to run zdb and then imported again. Add a new ztest function, "-M", to alter ztest behavior to prevent this. Add new tests to verify the new functionality. Tests provided by Giuseppe Di Natale. Reviewed by: Matthew Ahrens <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Ned Bass <[email protected]> Reviewed-by: Andreas Dilger <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Olaf Faaland <[email protected]> Closes #745 Closes #6279
* Make hostid consistent in user and kernel spaceOlaf Faaland2017-07-131-3/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If no spl_hostid was set, and no /etc/hostid file existed, the user and kernel would have different values for the hostid. The kernel's would be 0. User space's would depend on the libc implementation. On systems with glibc, it would be a generated value, probably the first 4 bytes of an IP address (see man 3 gethostid and comments above hostid_read in SPL for details). This then causes the hostid stored in the labels and in the pool config not to match the hostid userspace obtains from get_system_hostid(). Since the kernel has no way to know the libc's generated hostid value, it serves no purpose for ZFS to use the value. This patch changes user space's get_system_hostid() to conform to the kernel's method, first checking for the spl_hostid via sysfs, and then reading from /etc/hostid directly. It does not look up spl_hostid_path, because if that is set and the file it pointed to exists, spl_hostid will reflect its contents. It eliminates the call to libc's gethostid(). Reviewed by: Matthew Ahrens <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Ned Bass <[email protected]> Reviewed-by: Andreas Dilger <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Olaf Faaland <[email protected]> Closes #745 Closes #6279
* Fixed VERIFY3_IMPL() bug from 682ce104Tom Caputi2017-07-121-1/+2
| | | | | | | | | | | When VERIFY3_IMPL() was adjusted in 682ce104, the values of the operands were omitted from the variadic arguments list. This patch simply corrects this. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Tony Hutter <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #6343
* Implemented zpool scrub pause/resumeAlek P2017-07-062-11/+36
| | | | | | | | | | | | | | | | | | Currently, there is no way to pause a scrub. Pausing may be useful when the pool is busy with other I/O to preserve bandwidth. This patch adds the ability to pause and resume scrubbing. This is achieved by maintaining a persistent on-disk scrub state. While the state is 'paused' we do not scrub any more blocks. We do however perform regular scan housekeeping such as freeing async destroyed and deadlist blocks while paused. Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Thomas Caputi <[email protected]> Reviewed-by: Serapheim Dimitropoulos <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Alek Pinchuk <[email protected]> Closes #6167
* Musl libc fixesalaviss2017-07-051-0/+1
| | | | | | | | | Musl libc's <stdio.h> doesn't include <stdarg.h>, which cause `va_start` and `va_end` end up being undefined symbols. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: George Melikov <[email protected]> Signed-off-by: Leorize <[email protected]> Closes #6310
* OpenZFS 7600 - zfs rollback should pass target snapshot to kernelAndriy Gapon2017-07-042-7/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Authored by: Andriy Gapon <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Pavel Zakharov <[email protected]> Approved by: Robert Mustacchi <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Ported-by: Giuseppe Di Natale <[email protected]> The existing kernel-side code only provides a method to rollback to a latest snapshot, whatever it happens to be at the time when the rollback is actually done. That could be unsafe or confusing in environments where concurrent DSL changes are possible as the resulting state could correspond to a newer or older snapshot than the originally requested one. This change allows to amend that method such that the rollback is performed only when the latest snapshot has a specific name. That is, if a new snapshot is concurrently created or the target snapshot is destroyed, then no rollback is done and EXDEV error is returned. New libzfs_core function lzc_rollback_to() is provided for the new functionality. libzfs is changed to use lzc_rollback_to() to implement zfs rollback command. Perhaps we should return different errors to distinguish the case where the desired snapshot exists but it's not the latest snapshot and the case where the desired snapshot does not exist. OpenZFS-issue: https://www.illumos.org/issues/7600 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/3d645eb Closes #6292
* OpenZFS 8418 - zfs_prop_get_table() call in zfs_validate_name() is a no-opMarcel Telka2017-07-041-1/+0
| | | | | | | | | | | | | Authored by: Marcel Telka <[email protected]> Reviewed by: Vitaliy Gusev <[email protected]> Approved by: Matthew Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: George Melikov <[email protected]> Ported-by: Giuseppe Di Natale <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/8418 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/e09ba01 Closes #6305
* OpenZFS 8430 - dir_is_empty_readdir() doesn't properly handle error from ↵Sowrabha Gopal2017-06-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | fdopendir() Authored by: Sowrabha Gopal <[email protected]> Reviewed by: Serapheim Dimitropoulos <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Dan Kimmel <[email protected]> Reviewed by: Yuri Pankov <[email protected]> Reviewed by: Igor Kozhukhov <[email protected]> Approved by: Robert Mustacchi <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: George Melikov <[email protected]> Ported-by: Giuseppe Di Natale <[email protected]> dir_is_empty_readdir() immediately returns if fdopendir() fails. We should close dirfd when that happens. OpenZFS-issue: https://www.illumos.org/issues/8430 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/e165e20 Closes #6289
* GCC 7.1 fixesTony Hutter2017-06-284-19/+42
| | | | | | | | | | | GCC 7.1 with will warn when we're not checking the snprintf() return code in cases where the buffer could be truncated. This patch either checks the snprintf return code (where applicable), or simply disables the warnings (ztest.c). Reviewed-by: Chunwei Chen <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tony Hutter <[email protected]> Closes #6253
* OpenZFS 8264 - want support for promoting datasets in libzfs_coreGiuseppe Di Natale2017-06-262-14/+31
| | | | | | | | | | | | | Authored by: Andrew Stormont <[email protected]> Reviewed by: Andriy Gapon <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Dan McDonald <[email protected]> Approved by: Dan McDonald <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Ported-by: Giuseppe Di Natale <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/8264 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/a4b8c9a Closes #6254
* OpenZFS 8331 - zfs_unshare returns wrong error code for smb unshare failureAndrew Stormont2017-06-221-4/+6
| | | | | | | | | | | | | | Authored by: Andrew Stormont <[email protected]> Reviewed by: Marcel Telka <[email protected]> Reviewed by: Toomas Soome <[email protected]> Approved by: Dan McDonald <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: George Melikov <[email protected]> Ported-by: Giuseppe Di Natale <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/8331 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/4f4378c Closes #6255
* Dashes for zero latency values in zpool iostat -pTony Hutter2017-06-221-2/+7
| | | | | | | | | | | | This prints dashes instead of zeros for zero latency values in 'zpool iostat -p'. You'll get zero latencies reported when the disk is idle, but technically a zero latency is invalid, since you can't measure the latency of doing nothing. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: George Melikov <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Signed-off-by: Tony Hutter <[email protected]> Closes #6210
* Fix import finding spare/l2cache when path changesChunwei Chen2017-06-011-2/+16
| | | | | | | | | | | | | | | | When spare or l2cache device path changes, zpool import will not fix up their paths like normal vdev. The issue is that when you supply a pool name argument to zpool import, it will use it to filter out device which doesn't have the pool name in the label. Since spare and l2cache device never have that in the label, they'll always get filtered out. We fix this by making sure we never filter out a spare or l2cache device. Reviewed by: Richard Elling <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Chunwei Chen <[email protected]> Closes #6158
* Implemented zpool sync commandAlek P2017-05-192-11/+45
| | | | | | | | | | | This addition will enable us to sync an open TXG to the main pool on demand. The functionality is similar to 'sync(2)' but 'zpool sync' will return when data has hit the main storage instead of potentially just the ZIL as is the case with the 'sync(2)' cmd. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Signed-off-by: Alek Pinchuk <[email protected]> Closes #6122
* Force fault a vdev with 'zpool offline -f'Tony Hutter2017-05-191-0/+37
| | | | | | | | | | | | | This patch adds a '-f' option to 'zpool offline' to fault a vdev instead of bringing it offline. Unlike the OFFLINE state, the FAULTED state will trigger the FMA code, allowing for things like autoreplace and triggering the slot fault LED. The -f faults persist across imports, unless they were set with the temporary (-t) flag. Both persistent and temporary faults can be cleared with zpool clear. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tony Hutter <[email protected]> Closes #6094
* Compatibilty with glibc-2.23Justin Lecher2017-05-161-0/+1
| | | | | | | | | | In glibc-2.23 <sys/sysmacros.h> isn't automatically included in <sys/types.h> [1], so we need ot explicitely include it. https://sourceware.org/ml/libc-alpha/2015-11/msg00253.html Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Justin Lecher <[email protected]> Closes #6132
* Add property overriding (-o|-x) to 'zfs receive'LOLi2017-05-092-26/+263
| | | | | | | | | | | | | | | | | | | | This allows users to specify "-o property=value" to override and "-x property" to exclude properties when receiving a zfs send stream. Both native and user properties can be specified. This is useful when using zfs send/receive for periodic backup/replication because it lets users change properties such as canmount, mountpoint, or compression without modifying the source. References: https://www.illumos.org/issues/2745 https://www.illumos.org/issues/3753 Reviewed by: Matthew Ahrens <[email protected]> Reviewed-by: Alek Pinchuk <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #1350 Closes #5349
* Make createtxg and guid properties publicChristian Schwarz2017-05-091-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Document the existence of `createtxg` and `guid` native properties in man pages and zfs command output. One of the great features of ZFS is incremental replication of snapshots, possibly between pools on different machines. Shell scripts are commonly used to auomate this procedure. They have to find the most recent common snapshot between both sides and then perform incremental send & recv. Currently, scripts rely on the sorting order of `zfs list`, which defaults to `createtxg`, and the assumption that snapshot names on either side do not change. By making `createtxg` and `guid` part of the public ZFS interface, scripts are enabled to use a) `createtxg` to determine the logical & temporal order of snapshots (the creation property is not an equivalent substitute since multiple snapshots may be created within one second) b) `guid` to uniquely identify a snapshot, independent of its current display name This has the potential of making scripts safer and correct. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: DHE <[email protected]> Reviewed-by: Richard Laager <[email protected]> Signed-off-by: Christian Schwarz <[email protected]> Closes #6102
* Fix NULL pointer dereference in 'zfs create'LOLi2017-05-091-1/+3
| | | | | | | | | | | A race condition between 'zpool export' and 'zfs create' can crash the latter: this is because we never check libzfs`zpool_open() return value in libzfs`zfs_create(). Reviewed-by: George Melikov <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #6096
* Linux 4.12 compat: PF_FSTRANS was removedChunwei Chen2017-05-091-1/+1
| | | | | | | | zfsonlinux/spl@8f87971 added __spl_pf_fstrans_check for the xfs related check, so we use them accordingly. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Chunwei Chen <[email protected]> Closes #6113
* More ashift improvementsLOLi2017-05-031-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | This commit allow higher ashift values (up to 16) in 'zpool create' The ashift value was previously limited to 13 (8K block) in b41c990 because the limited number of uberblocks we could fit in the statically sized (128K) vdev label ring buffer could prevent the ability the safely roll back a pool to recover it. Since b02fe35 the largest uberblock size we support is 8K: this allow us to store a minimum number of 16 uberblocks in the vdev label, even with higher ashift values. Additionally change 'ashift' pool property behaviour: if set it will be used as the default hint value in subsequent vdev operations ('zpool add', 'attach' and 'replace'). A custom ashift value can still be specified from the command line, if desired. Finally, fix a bug in add-o_ashift.ksh caused by a missing variable. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #2024 Closes #4205 Closes #4740 Closes #5763
* Add zfs_nicebytes() to print human-readable sizesLOLi2017-05-025-20/+51
| | | | | | | | | | | | | | | | * Add zfs_nicebytes() to print human-readable sizes Some 'zfs', 'zpool' and 'zdb' output strings can be confusing to the user when no units are specified. This add a new zfs_nicenum_format "ZFS_NICENUM_BYTES" used to print bytes in their human-readable form. Additionally, update some test cases to use machine-parsable 'zfs get'. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #2414 Closes #3185 Closes #3594 Closes #6032
* OpenZFS 7252 - compressed zfs send / receiveDan Kimmel2017-04-261-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | OpenZFS 7252 - compressed zfs send / receive OpenZFS 7628 - create long versions of ZFS send / receive options Authored by: Dan Kimmel <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed by: John Kennedy <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Paul Dagnelie <[email protected]> Reviewed by: Pavel Zakharov <[email protected]> Reviewed by: Sebastien Roy <[email protected]> Reviewed by: David Quigley <[email protected]> Reviewed by: Thomas Caputi <[email protected]> Approved by: Dan McDonald <[email protected]> Reviewed by: David Quigley <[email protected]> Reviewed-by: loli10K <[email protected]> Ported-by: bunder2015 <[email protected]> Ported-by: Don Brady <[email protected]> Ported-by: Brian Behlendorf <[email protected]> Porting Notes: - Most of 7252 was already picked up during ABD work. This commit represents the gap from the final commit to openzfs. - Fixed split_large_blocks check in do_dump() - An alternate version of the write_compressible() function was implemented for Linux which does not depend on fio. The behavior of fio differs significantly based on the exact version. - mkholes was replaced with truncate for Linux. OpenZFS-issue: https://www.illumos.org/issues/7252 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/5602294 Closes #6067
* Fixed zdb -e regression for active cacheless poolsDon Brady2017-04-241-2/+7
| | | | | | | | | | | | | | zdb -e for active cache-less pools fails: $ sudo zpool create -o cachefile=none basic mirror sdk sdl $ sudo zdb -e -b basic zdb: can't open 'basic': No such file or directory This is a recent regression introduce by commit c30d8de. Reviewed-by: Richard Yao <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Don Brady <[email protected]> Closes #6059
* Prebaked scripts for zpool status/iostat -cTony Hutter2017-04-211-4/+146
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch updates the "zpool status/iostat -c" commands to only run "pre-baked" scripts from the /etc/zfs/zpool.d directory (or wherever you install to). The scripts can only be run from -c as an unprivileged user (unless the ZPOOL_SCRIPTS_AS_ROOT environment var is set by root). This was done to encourage scripts to be written is such a way that normal users can use them, and to be cautious. If your script needs to run a privileged command, consider adding the appropriate line in /etc/sudoers. See zpool(8) for an example of how to do this. The patch also allows the scripts to output custom column names. If the script outputs a line like: name=value then "name" is used for the column name, and "value" is its value. Multiple columns can be specified by outputting multiple lines. Column names and values can have spaces. If the value is empty, a dash (-) is printed instead. After all the "name=value" lines are read (if any), zpool will take the next the next line of output (if any) and print it without a column header. After that, no more lines will be processed. This can be useful for printing errors. Lastly, this patch also disables the -c option with the latency and request size histograms, since it produced awkward output and made the code harder to maintain. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Signed-off-by: Tony Hutter <[email protected]> Closes #5852
* Fix leak in send_iterate_fsTim Crawford2017-04-191-0/+2
| | | | | | | | | Fix a leak when generating a replication stream of a cloned dataset. Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Signed-off-by: Tim Crawford <[email protected]> Closes #6034
* Fix header inclusions for standards conformanceRichard Yao2017-04-125-1/+115
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | musl's sys/errno.h is literally: /#warning redirecting incorrect #include <sys/errno.h> to <errno.h> /#include <errno.h> It does the same for sys/{poll,signal}.h. This is rather noisy when building ZoL against musl. musl is also correct in pointing out that the correct headers are outside of sys/ according to the single unix specification: http://pubs.opengroup.org/onlinepubs/7908799/xsh/errno.h.html http://pubs.opengroup.org/onlinepubs/7908799/xsh/poll.h.html http://pubs.opengroup.org/onlinepubs/7908799/xsh/signal.h.html Lets implement our own sys/* versions of these headers to redirect to the proper userland ones when building in userspace. That will silence the warning. There are also some instances where we include incorrectly from sys/ or from outside of sys/ in userspace only code. In these instances, lets just fix the includes directly. Reviewed-by: George Melikov <[email protected]> Reviewed-by: loli10K <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: George Melikov <[email protected]> Signed-off-by: Richard Yao <[email protected]> Closes #5993
* Fix `zpool iostat -T d 1` on muslRichard Yao2017-04-121-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | When building on Gentoo against musl, GCC complains: timestamp.c: In function ‘print_timestamp’: timestamp.c:32:19: warning: passing argument 1 of ‘nl_langinfo’ makes integer from pointer without a cast #define _DATE_FMT "%+" ^ timestamp.c:47:21: note: in expansion of macro ‘_DATE_FMT’ fmt = nl_langinfo(_DATE_FMT); ^ The error was wrapped to meet comment style requirements. This code is used by `zpool iostat -T d 1` to print a date and upon testing it, I see no date printed. Lets use D_T_FMT so that something gets printed and if D_T_FMT is not avaliable, then we can fall back to "%+". Reviewed-by: George Melikov <[email protected]> Reviewed-by: loli10K <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: George Melikov <[email protected]> Signed-off-by: Richard Yao <[email protected]> Closes #5993
* OpenZFS 6865 - want zfs-tests cases for zpool labelclear commandYuri Pankov2017-04-111-9/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Authored by: Yuri Pankov <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: John Kennedy <[email protected]> Approved by: Robert Mustacchi <[email protected]> Reviewed-by: loli10K <[email protected]> Ported-by: Brian Behlendorf <[email protected]> Porting Notes: - Updated 'zpool labelclear' and 'zdb -l' such that they attempt to find a vdev given solely its short name. This behavior is consistent with the upstream OpenZFS code and the test cases depend on it. The actual implementation differs slightly due to device naming conventions on Linux. - auto_online_001_pos, auto_replace_001_pos and add-o_ashift test cases updated to expect failure when no label exists. - read_efi_label() and zpool_label_disk_check() are read-only operations and should use O_RDONLY at open time to enforce this. - zpool_label_disk() and zpool_relabel_disk() write the partition information using O_DIRECT an fsync() and page cache invalidation to ensure a consistent view of the device. - dump_label() in zdb should invalidate the page cache in order to get the authoritative label from disk. OpenZFS-issue: https://www.illumos.org/issues/6865 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/c95076c Closes #5981
* OpenZFS 5380 - receive of a send -p stream doesn't need to try renaming ↵Andriy Gapon2017-04-091-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | snapshots Authored by: Andriy Gapon <[email protected]> Approved by: Dan McDonald <[email protected]> Reviewed by: Paul Dagnelie <[email protected]> Reviewed by: Matt Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: George Melikov <[email protected]> Ported-by: Giuseppe Di Natale <[email protected]> recv_incremental_replication() takes care of things like removing datasets that have been removed on the sending side, detecting renamed datasets, ensuring that all datasets in the affected hierarchy have the same properties as their counterparts on the sending side. All of the above are not necessary if we are receiving a stream for a single dataset that has been generated with zfs send -p, that is, a stream that includes properties. zfs_receive_one() already takes care of applying the properties to the received datasets. OpenZFS-issue: https://www.illumos.org/issues/5380 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/b8ab927 Closes #5990
* OpenZFS 8046 - Let calloc() do the multiplication in libzfs_fru_refreshPedro Giffuni2017-04-091-1/+1
| | | | | | | | | | | | | | Authored by: Pedro Giffuni <[email protected]> Approved by: Robert Mustacchi <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Paul Dagnelie <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: George Melikov <[email protected]> Ported-by: Giuseppe Di Natale <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/8046 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/3a3c0d5 Closes #5989
* glibc 2.5 compat: use correct header for makedev() et al.Olaf Faaland2017-03-312-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In glibc 2.5, makedev(), major(), and minor() are defined in sys/sysmacros.h. They are also defined in types.h for backward compatability, but using these definitions triggers a compile warning. This breaks the ZFS build, as it builds with -Werror. autoconf email threads indicate these macros may be defined in sys/mkdev.h in some cases. This commit adds configure checks to detect where makedev() is defined: sys/sysmacros.h sys/mkdev.h It assumes major() and minor() are defined in the same place. The libspl types.h then includes sys/sysmacros.h (preferred) or sys/mkdev.h (2nd choice) if one of those defines makedev(). This is done before including the system types.h. An alternative would be to remove uses of major, minor, and makedev, instead comparing the st_dev returned from stat64. These configure checks would then be unnecessary. This change revealed that __NORETURN was being defined unnecessarily in libspl/include/sys/sysmacros.h. That definition is removed. The files in which __NORETURN are used all include types.h, and so all will get the definition provided by feature_tests.h Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Olaf Faaland <[email protected]> Closes #5945
* OpenZFS 7990 - libzfs: snapspec_cb() does not need to call zfs_strdup()Giuseppe Di Natale2017-03-281-7/+4
| | | | | | | | | | | | | Authored by: Marcel Telka <[email protected]> Reviewed by: Yuri Pankov <[email protected]> Reviewed by: Toomas Soome <[email protected]> Approved by: Matthew Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: George Melikov <[email protected]> Ported-by: Giuseppe Di Natale <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/7990 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/d8584ba Closes #5939
* Check ashift validity in 'zpool add'LOLi2017-03-281-3/+6
| | | | | | | | | | | | | df83110 added the ability to specify a custom "ashift" value from the command line in 'zpool add' and 'zpool attach'. This commit adds additional checks to the provided ashift to prevent invalid values from being used, which could result in disastrous consequences for the whole pool. Additionally provide ASHIFT_MAX and ASHIFT_MIN definitions in spa.h. Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #5878
* Fix 'zdb -o' segmentation faultLOLi2017-03-231-1/+1
| | | | | | | | | Fix a regression accidentally introduced by OpenZFS 7280 in ed828c0: since whether to accept NULL as a valid first parameter in strchr() is implementation specific we add an additional check to avoid crashing. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #5917
* Fix undefined reference to `libzfs_fru_compare'Brian Behlendorf2017-03-231-0/+9
| | | | | | | | | | | | | | | Add trivial libzfs_fru_compare() function which can be used when HAVE_LIBTOPO is not defined. The only caller is find_vdev() and this function should never be reached because search_fru must be NULL unless HAVE_LIBTOPO is defined. Rename _HAS_FMD_TOPO to existing HAVE_LIBTOPO which was originally added for this purpose. This macro will never be defined. Reviewed-by: Tony Hutter <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #5402 Closes #5909
* Fix `zpool status -v` error messageBrian Behlendorf2017-03-221-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | When a pool is suspended it's impossible to read the list of damaged files from disk. This would result in a generic misleading "insufficient permissions" error message. Update zpool_get_errlog() to use the standard zpool error logging functions to generate a useful error message. In this case: errors: List of errors unavailable: pool I/O is currently suspended This patch does not address the related issue of potentially not being able to resume a suspend pool when the underlying device names have changed. Additionally, remove the error handling from zfs_alloc() in zpool_get_errlog() for readability since this function can never fail. Reviewed-by: George Melikov <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4031 Closes #5731 Closes #5907
* libspl: Fix incorrect use of platform defines on sparc64John Paul Adrian Glaubitz2017-03-221-2/+2
| | | | | | | | | | | | | | | | libspl tries to detect sparc64 by checking whether __sparc64__ is defined. Unfortunately, this assumption is not correct as sparc64 does not define __sparc64__ but it defines __sparc__ and __arch64__ instead. This leads to sparc64 being detected as 32-Bit sparc and the build fails because both _ILP32 and _LP64 are defined in this case. To fix the problem, remove the checks for __sparc64__ and just check __arch64__ if a sparc host was previously detected with __sparc__. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: John Paul Adrian Glaubitz <[email protected]> Closes #5913
* Fix nfs snapdir automountChunwei Chen2017-03-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | The current implementation for allowing nfs to access snapdir is very buggy. It uses a special fh for snapdirs, such that the next time nfsd does fh_to_dentry, it actually returns the root inode inside the snapshot. So nfsd never knows it cross a mountpoint. The problem is that nfsd will not hold a reference on the vfsmount of the snapshot. This cause auto unmounter to unmount the snapshot even though nfs is still holding dentries in it. To fix this, we return the inode for the snapdirs themselves. However, we also trigger automount upon fh_to_dentry, and return ESTALE so nfsd will revalidate and see the mountpoint and do crossmnt. Because nfsd will now be aware that these are different filesystems users must add crossmnt to their export options to access snapshot directories. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Chunwei Chen <[email protected]> Closes #3794 Closes #4716 Closes #5810 Closes #5833
* Fix powerpc buildBrian Behlendorf2017-03-061-4/+0
| | | | | | | | | | | | | | | | | | | Unlike other architectures which sanitize the LDFLAGS from the environment in arch/<arch>/Makefile. The powerpc Makefile allows LDFLAGS to be passed through resulting in the following build failure. /usr/bin/ld: unrecognized option '-Wl,-z,relro' LDFLAGS is set in /usr/lib/rpm/redhat/macros by default. Clear the environment variable when building kmods for powerpc. Additionally, now that ppc64le exists it's not longer safe to assume a powerpc system is big endian. Rely on the endianness provided by the compiler. Reviewed-by: Giuseppe Di Natale <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #5856
* Fix checksumflags assignment in cksummerTim Crawford2017-02-241-1/+1
| | | | | | | | | | drr_checksumflags was incorrectly set to drr_checksumtype. Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: George Melikov <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Signed-off-by: Tim Crawford <[email protected]> Closes #5830
* Clear enclosure sysfs path from VDEV label when sysfs path isn't presentTony Hutter2017-02-101-1/+3
| | | | | | | | | | | | | | | | This clears vdev_enc_sysfs_path from the label if the VDEV's /sys/class/block/<dev>/device/enclosure_device path isn't present. This is important in the case where a disk that is labeled with vdev_enc_sysfs_path is pulled out and put into another enclosure. In that case, it's possible that the old sysfs path would be used to turn on the fault LED for the disk's old slot postion, assuming the new slot didn't have a LED sysfs entry. Reviewed-by: Don Brady <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tony Hutter <[email protected]> Closes #5524 Closes #5773
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