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* OpenZFS 9290 - device removal reduces redundancy of mirrorsMatthew Ahrens2018-04-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mirrors are supposed to provide redundancy in the face of whole-disk failure and silent damage (e.g. some data on disk is not right, but ZFS hasn't detected the whole device as being broken). However, the current device removal implementation bypasses some of the mirror's redundancy. Note that in no case is incorrect data returned, but we might get a checksum error when we should have been able to find the right data. There are two underlying problems: 1. When we remove a mirror device, we only read one side of the mirror. Since we can't verify the checksum, this side may be silently bad, but the good data is on the other side of the mirror (which we didn't read). This can cause the removal to "bake in" the busted data – all copies of the data in the new location are the same, busted version, while we left the good version behind. The fix for this is to read and copy both sides of the mirror. If the old and new vdevs are mirrors, we will read both sides of the old mirror, and write each copy to the corresponding side of the new mirror. (If the old and new vdevs have a different number of children, we will do this as best as possible.) Even though we aren't verifying checksums, this ensures that as long as there's a good copy of the data, we'll have a good copy after the removal, even if there's silent damage to one side of the mirror. If we're removing a mirror that has some silent damage, we'll have exactly the same damage in the new location (assuming that the new location is also a mirror). 2. When we read from an indirect vdev that points to a mirror vdev, we only consider one copy of the data. This can lead to reduced effective redundancy, because we might read a bad copy of the data from one side of the mirror, and not retry the other, good side of the mirror. Note that the problem is not with the removal process, but rather after the removal has completed (having copied correct data to both sides of the mirror), if one side of the new mirror is silently damaged, we encounter the problem when reading the relocated data via the indirect vdev. Also note that the problem doesn't occur when ZFS knows that one side of the mirror is bad, e.g. when a disk entirely fails or is offlined. The impact is that reads (from indirect vdevs that point to mirrors) may return a checksum error even though the good data exists on one side of the mirror, and scrub doesn't repair all data on the mirror (if some of it is pointed to via an indirect vdev). The fix for this is complicated by "split blocks" - one logical block may be split into two (or more) pieces with each piece moved to a different new location. In this case we need to read all versions of each split (one from each side of the mirror), and figure out which combination of versions results in the correct checksum, and then repair the incorrect versions. This ensures that we supply the same redundancy whether you use device removal or not. For example, if a mirror has small silent errors on all of its children, we can still reconstruct the correct data, as long as those errors are at sufficiently-separated offsets (specifically, separated by the largest block size - default of 128KB, but up to 16MB). Porting notes: * A new indirect vdev check was moved from dsl_scan_needs_resilver_cb() to dsl_scan_needs_resilver(), which was added to ZoL as part of the sequential scrub work. * Passed NULL for zfs_ereport_post_checksum()'s zbookmark_phys_t parameter. The extra parameter is unique to ZoL. * When posting indirect checksum errors the ABD can be passed directly, zfs_ereport_post_checksum() is not yet ABD-aware in OpenZFS. Authored by: Matthew Ahrens <[email protected]> Reviewed by: Tim Chase <[email protected]> Reviewed by: Brian Behlendorf <[email protected]> Ported-by: Tim Chase <[email protected]> OpenZFS-issue: https://illumos.org/issues/9290 OpenZFS-commit: https://github.com/openzfs/openzfs/pull/591 Closes #6900
* OpenZFS 7614, 9064 - zfs device evacuation/removalMatthew Ahrens2018-04-143-19/+118
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | OpenZFS 7614 - zfs device evacuation/removal OpenZFS 9064 - remove_mirror should wait for device removal to complete This project allows top-level vdevs to be removed from the storage pool with "zpool remove", reducing the total amount of storage in the pool. This operation copies all allocated regions of the device to be removed onto other devices, recording the mapping from old to new location. After the removal is complete, read and free operations to the removed (now "indirect") vdev must be remapped and performed at the new location on disk. The indirect mapping table is kept in memory whenever the pool is loaded, so there is minimal performance overhead when doing operations on the indirect vdev. The size of the in-memory mapping table will be reduced when its entries become "obsolete" because they are no longer used by any block pointers in the pool. An entry becomes obsolete when all the blocks that use it are freed. An entry can also become obsolete when all the snapshots that reference it are deleted, and the block pointers that reference it have been "remapped" in all filesystems/zvols (and clones). Whenever an indirect block is written, all the block pointers in it will be "remapped" to their new (concrete) locations if possible. This process can be accelerated by using the "zfs remap" command to proactively rewrite all indirect blocks that reference indirect (removed) vdevs. Note that when a device is removed, we do not verify the checksum of the data that is copied. This makes the process much faster, but if it were used on redundant vdevs (i.e. mirror or raidz vdevs), it would be possible to copy the wrong data, when we have the correct data on e.g. the other side of the mirror. At the moment, only mirrors and simple top-level vdevs can be removed and no removal is allowed if any of the top-level vdevs are raidz. Porting Notes: * Avoid zero-sized kmem_alloc() in vdev_compact_children(). The device evacuation code adds a dependency that vdev_compact_children() be able to properly empty the vdev_child array by setting it to NULL and zeroing vdev_children. Under Linux, kmem_alloc() and related functions return a sentinel pointer rather than NULL for zero-sized allocations. * Remove comment regarding "mpt" driver where zfs_remove_max_segment is initialized to SPA_MAXBLOCKSIZE. Change zfs_condense_indirect_commit_entry_delay_ticks to zfs_condense_indirect_commit_entry_delay_ms for consistency with most other tunables in which delays are specified in ms. * ZTS changes: Use set_tunable rather than mdb Use zpool sync as appropriate Use sync_pool instead of sync Kill jobs during test_removal_with_operation to allow unmount/export Don't add non-disk names such as "mirror" or "raidz" to $DISKS Use $TEST_BASE_DIR instead of /tmp Increase HZ from 100 to 1000 which is more common on Linux removal_multiple_indirection.ksh Reduce iterations in order to not time out on the code coverage builders. removal_resume_export: Functionally, the test case is correct but there exists a race where the kernel thread hasn't been fully started yet and is not visible. Wait for up to 1 second for the removal thread to be started before giving up on it. Also, increase the amount of data copied in order that the removal not finish before the export has a chance to fail. * MMP compatibility, the concept of concrete versus non-concrete devices has slightly changed the semantics of vdev_writeable(). Update mmp_random_leaf_impl() accordingly. * Updated dbuf_remap() to handle the org.zfsonlinux:large_dnode pool feature which is not supported by OpenZFS. * Added support for new vdev removal tracepoints. * Test cases removal_with_zdb and removal_condense_export have been intentionally disabled. When run manually they pass as intended, but when running in the automated test environment they produce unreliable results on the latest Fedora release. They may work better once the upstream pool import refectoring is merged into ZoL at which point they will be re-enabled. Authored by: Matthew Ahrens <[email protected]> Reviewed-by: Alex Reece <[email protected]> Reviewed-by: George Wilson <[email protected]> Reviewed-by: John Kennedy <[email protected]> Reviewed-by: Prakash Surya <[email protected]> Reviewed by: Richard Laager <[email protected]> Reviewed by: Tim Chase <[email protected]> Reviewed by: Brian Behlendorf <[email protected]> Approved by: Garrett D'Amore <[email protected]> Ported-by: Tim Chase <[email protected]> Signed-off-by: Tim Chase <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/7614 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/f539f1eb Closes #6900
* Add 'zpool split' coverage to the ZFS Test SuiteLOLi2018-04-121-1/+9
| | | | | | | | | | | | | This change adds five new tests to the ZTS: * zpool_split_cliargs: verify command line options and arguments * zpool_split_devices: verify zpool split accepts a device list * zpool_split_encryption: verify zpool can split encrypted pools * zpool_split_props: verify zpool split can set property values * zpool_split_vdevs: verify vdev layout when splitting the pool Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #7409
* Fix calloc(3) arguments orderTomohiro Kusumi2018-04-122-6/+6
| | | | | | | | | | | | calloc(3) takes `nelem` (or `nmemb` in glibc) first, and then size of elements. No difference expected for having these in reverse order, however should follow the standard. http://pubs.opengroup.org/onlinepubs/009695399/functions/calloc.html Reviewed-by: Tony Hutter <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tomohiro Kusumi <[email protected]> Closes #7405
* OpenZFS 9286 - want refreservation=autoMike Gerdts2018-04-112-4/+97
| | | | | | | | | | | | | | | | | | | | Authored by: Mike Gerdts <[email protected]> Reviewed by: Allan Jude <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: John Kennedy <[email protected]> Reviewed by: Andy Stormont <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Approved by: Richard Lowe <[email protected]> Ported-by: Don Brady <[email protected]> Porting Notes: * Adopted destroy_dataset in ZTS test cleanup * Use ksh shebang instead of bash for new tests OpenZFS-issue: https://www.illumos.org/issues/9286 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/723d0c85 Closes #7387
* Fix zpool set feature@<feature>=disabledLOLi2018-04-111-0/+9
| | | | | | | | | Commit e4010f2 accidentally allows zpool to set pool features to "disabled"; this should only be allowed at pool creation. This commit adds additional checks and test coverage to 'zpool set'. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #7402
* Correct swapped keylocation error messagesTom Caputi2018-04-091-4/+4
| | | | | | | | | | | This patch corrects a small issue where two error messages in the code that checks for invalid keylocations were swapped. Reviewed by: Matt Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #7418
* Fedora 28: Fix misc bounds check compiler warningsTony Hutter2018-04-042-4/+12
| | | | | | | | | Fix a bunch of (mostly) sprintf/snprintf truncation compiler warnings that show up on Fedora 28 (GCC 8.0.1). Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tony Hutter <[email protected]> Closes #7361 Closes #7368
* Add support for nvme based devidsDon Brady2018-03-291-2/+13
| | | | | | | | | | | Adds a devid for nvme devices. This is very similar to how the other 'bus' (scsi|sata|usb) devids are generated. The devid resides in a name/value pair in the leaf vdevs in a zpool config. Reviewed-by: Tony Hutter <[email protected]> Reviewed-by: Richard Elling <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Don Brady <[email protected]> Closes #7356
* OpenZFS 9193 - bootcfg -C doesn't workPaul Dagnelie2018-03-221-2/+3
| | | | | | | | | | | | | | | | | | | | When given an empty string as a rootds value, bootcfg -C fails with the error message 'could not set nextboot: '' is an invalid name'. This should be allowed because it represents clearing the nextboot configuration. Authored by: Paul Dagnelie <[email protected]> Reviewed by: Chris Williamson <[email protected]> Reviewed by: Sebastien Roy <[email protected]> Reviewed by: Igor Kozhukhov <[email protected]> Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Approved by: Robert Mustacchi <[email protected]> Ported-by: Giuseppe Di Natale <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/9193 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/504645d227 Closes #7230
* Report pool suspended due to MMPOlaf Faaland2018-03-151-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | When the pool is suspended, record whether it was due to an I/O error or due to MMP writes failing to succeed within the required time. Change spa_suspended from uint8_t to zio_suspend_reason_t to store the reason. When userspace queries pool status via spa_tryimport(), report the reason the pool was suspended in a new key, ZPOOL_CONFIG_SUSPENDED_REASON. In libzfs, when interpreting the returned config nvlist, report suspension due to MMP with a new pool status enum value, ZPOOL_STATUS_IO_FAILURE_MMP. In status_callback(), which generates and emits the message when 'zpool status' is executed, add a case to print an appropriate message for the new pool status enum value. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Olaf Faaland <[email protected]> Closes #7296
* Add kernel module auto-loadingBrian Behlendorf2018-03-131-6/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Historically a dynamic misc minor number was registered for the /dev/zfs device in order to prevent minor number collisions. This was fine but it prevented us from being able to use the kernel module auto-loaded which requires a known reserved value. Resolve this issue by adding a configure test to find an available misc minor number which can then be used in MODULE_ALIAS_MISCDEV at build time. By adding this alias the zfs kmod is added to the list of known static-nodes and the systemd-tmpfiles-setup-dev service will create a /dev/zfs character device at boot time. This in turn allows us to update the 90-zfs.rules file to make it aware this is a static node. The upshot of this is that whenever a process (zpool, zfs, zed) opens the /dev/zfs the kmods will be automatic loaded. This even works for unprivileged users so there is no longer a need to manually load the modules at boot time. As an additional bonus the zed now no longer needs to start after the zfs-import.service since it will trigger the module load. In the unlikely event the minor number we selected conflicts with another out of tree unregistered minor number the code falls back to dynamically allocating it. In this case the modules again must be manually loaded. Note that due to the change in the method of registering the minor number the zimport.sh test case may incorrectly fail when the static node for the installed packages is created instead of the dynamic one. This issue will only transiently impact zimport.sh for this single commit when we transition and are mixing and matching methods. Reviewed-by: Fabian Grünbichler <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> TEST_ZIMPORT_SKIP="yes" Closes #7287
* Change functions which return literals to return `const char*`Tomohiro Kusumi2018-03-092-3/+3
| | | | | | | | | | | | | | get_format_prompt_string() and zpool_state_to_name() return a string literal which is read-only, thus they should return `const char*`. zpool_get_prop_string() returns a non-const string after successful nv-lookup, and returns a string literal otherwise. Since this function is designed to be used for read-only purpose, the return type should also be `const char*`. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tomohiro Kusumi <[email protected]> Closes #7285
* Misc fixes and cleanup for project quotaNasf-Fan2018-03-051-1/+2
| | | | | | | | | | | | | | | | | | | | | | | 1) The Coverity Scan reports some issues for the project quota patch, including: 1.1) zfs_prop_get_userquota() directly uses the const quota type value as the condition check by wrong. 1.2) dmu_objset_userquota_get_ids() may cause dnode::dn_newgid to be overwritten by dnode::dn->dn_oldprojid. 2) This patch fixes related issues. It also enhances the logic for zfs_project_item_alloc() to avoid buffer overflow. 3) Skip project quota ability check if does not change project quota related things (id or flag). Otherwise, it will cause chattr (for other non project quota flags) operation failed if project quota disabled. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Fan Yong <[email protected]> Closes #7251 Closes #7265
* Want 'zfs send -b'LOLi2018-02-211-12/+21
| | | | | | | | | | | | | | | This change implements 'zfs send -b' which can be used to send only received property values whether or not they are overridden by local settings. This can be very useful during "restore" operations from a backup pool because it allows to send only the property values originally sent from the backup source, even though they were later modified on the destination either by a 'zfs set' operation, explicit 'zfs inherit' or overridden during the receive process via 'zfs receive -o|-x'. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #7156
* Prevent raw zfs recv -F if dataset is unencryptedTom Caputi2018-02-211-11/+24
| | | | | | | | | | | | | | | | | | | | | | The current design of ZFS encryption only allows a dataset to have one DSL Crypto Key at a time. As a result, it is important that the zfs receive code ensures that only one key can be in use at a time for a given DSL Directory. zfs receive -F complicates this, since the new dataset is received as a clone of the existing one so that an atomic switch can be done at the end. To prevent confusion about which dataset is actually encrypted a check was added to ensure that encrypted datasets cannot use zfs recv -F to completely replace existing datasets. Unfortunately, the check did not take into account unencrypted datasets being overriden by encrypted ones as a case. Along the same lines, the code also failed to ensure that raw recieves could not be done on top of existing unencrypted datasets, which causes amny problems since the new stream cannot be decrypted. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #7199
* OpenZFS 8940 - Sending an intra-pool resumable send stream may result in EXDEVloli10K2018-02-141-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Because resuming from a token requires "guid" -> "snapshot" mapping we have to walk the whole dataset hierarchy to find the right snapshot to send; when both source and destination exists, for an incremental resumable stream, libzfs gets confused and picks up the wrong snapshot to send from: this results in attempting to send "destination@snap1 -> source@snap2" instead of "source@snap1 -> source@snap2" which fails with a "Invalid cross-device link" error (EXDEV). Fix this by adjusting the logic behind dataset traversal in zfs_iter_children() to pick the right snapshot to send from. Additionally update dry-run 'zfs send -t' to print its output to stderr: this is consistent with other dry-run commands. Patch Notes: Reconciled differences between OpenZFS and aee1dd4d983c64db3c3155290d48f05243e85709. Authored by: loli10K <[email protected]> Reviewed by: Paul Dagnelie <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Brian Behlendorf <[email protected]> Approved by: Hans Rosenfeld <[email protected]> Ported-by: Giuseppe Di Natale <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/8940 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/9f7867c206 Closes #7171
* Project Quota on ZFSNasf-Fan2018-02-131-9/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Project quota is a new ZFS system space/object usage accounting and enforcement mechanism. Similar as user/group quota, project quota is another dimension of system quota. It bases on the new object attribute - project ID. Project ID is a numerical value to indicate to which project an object belongs. An object only can belong to one project though you (the object owner or privileged user) can change the object project ID via 'chattr -p' or 'zfs project [-s] -p' explicitly. The object also can inherit the project ID from its parent when created if the parent has the project inherit flag (that can be set via 'chattr +P' or 'zfs project -s [-p]'). By accounting the spaces/objects belong to the same project, we can know how many spaces/objects used by the project. And if we set the upper limit then we can control the spaces/objects that are consumed by such project. It is useful when multiple groups and users cooperate for the same project, or a user/group needs to participate in multiple projects. Support the following commands and functionalities: zfs set projectquota@project zfs set projectobjquota@project zfs get projectquota@project zfs get projectobjquota@project zfs get projectused@project zfs get projectobjused@project zfs projectspace zfs allow projectquota zfs allow projectobjquota zfs allow projectused zfs allow projectobjused zfs unallow projectquota zfs unallow projectobjquota zfs unallow projectused zfs unallow projectobjused chattr +/-P chattr -p project_id lsattr -p This patch also supports tree quota based on the project quota via "zfs project" commands set as following: zfs project [-d|-r] <file|directory ...> zfs project -C [-k] [-r] <file|directory ...> zfs project -c [-0] [-d|-r] [-p id] <file|directory ...> zfs project [-p id] [-r] [-s] <file|directory ...> For "df [-i] $DIR" command, if we set INHERIT (project ID) flag on the $DIR, then the proejct [obj]quota and [obj]used values for the $DIR's project ID will be shown as the total/free (avail) resource. Keep the same behavior as EXT4/XFS does. Reviewed-by: Andreas Dilger <[email protected]> Reviewed-by Ned Bass <[email protected]> Reviewed-by: Matthew Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Fan Yong <[email protected]> TEST_ZIMPORT_POOLS="zol-0.6.1 zol-0.6.2 master" Change-Id: Ib4f0544602e03fb61fd46a849d7ba51a6005693c Closes #6290
* 'zfs receive' fails with "dataset is busy"LOLi2018-02-121-1/+17
| | | | | | | | | | | | | | | | Receiving an incremental stream after an interrupted "zfs receive -s" fails with the message "dataset is busy": this is because we still have the hidden clone ../%recv from the resumable receive. Improve the error message suggesting the existence of a partially complete resumable stream from "zfs receive -s" which can be either aborted ("zfs receive -A") or resumed ("zfs send -t"). Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: George Melikov <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #7129 Closes #7154
* OpenZFS 8520 - lzc_rollbackAndriy Gapon2018-02-091-9/+23
| | | | | | | | | | | | | | | | | | | | | | 8520 lzc_rollback_to should support rolling back to origin 7198 libzfs should gracefully handle EINVAL from lzc_rollback lzc_rollback_to() should support rolling back to a clone's origin. The current checks in zfs_ioc_rollback() would not allow that because the origin snapshot belongs to a different filesystem. The overly restrictive check was in introduced in 7600, but it was not a regression as none of the existing tools provided a way to rollback to the origin. Authored by: Andriy Gapon <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Approved by: Dan McDonald <[email protected]> Ported-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/8520 OpenZFS-issue: https://www.illumos.org/issues/7198 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/78a5a1a25a Closes #7150
* OpenZFS 8677 - Open-Context Channel ProgramsSerapheim Dimitropoulos2018-02-081-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Authored by: Serapheim Dimitropoulos <[email protected]> Reviewed by: Matt Ahrens <[email protected]> Reviewed by: Chris Williamson <[email protected]> Reviewed by: Pavel Zakharov <[email protected]> Approved by: Robert Mustacchi <[email protected]> Ported-by: Don Brady <[email protected]> We want to be able to run channel programs outside of synching context. This would greatly improve performance for channel programs that just gather information, as they won't have to wait for synching context anymore. === What is implemented? This feature introduces the following: - A new command line flag in "zfs program" to specify our intention to run in open context. (The -n option) - A new flag/option within the channel program ioctl which selects the context. - Appropriate error handling whenever we try a channel program in open-context that contains zfs.sync* expressions. - Documentation for the new feature in the manual pages. === How do we handle zfs.sync functions in open context? When such a function is found by the interpreter and we are running in open context we abort the script and we spit out a descriptive runtime error. For example, given the script below ... arg = ... fs = arg["argv"][1] err = zfs.sync.destroy(fs) msg = "destroying " .. fs .. " err=" .. err return msg if we run it in open context, we will get back the following error: Channel program execution failed: [string "channel program"]:3: running functions from the zfs.sync submodule requires passing sync=TRUE to lzc_channel_program() (i.e. do not specify the "-n" command line argument) stack traceback: [C]: in function 'destroy' [string "channel program"]:3: in main chunk === What about testing? We've introduced new wrappers for all channel program tests that run each channel program as both (startard & open-context) and expect the appropriate behavior depending on the program using the zfs.sync module. OpenZFS-issue: https://www.illumos.org/issues/8677 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/17a49e15 Closes #6558
* OpenZFS 7431 - ZFS Channel ProgramsChris Williamson2018-02-082-7/+96
| | | | | | | | | | | | | | | | | | | | | | | | | Authored by: Chris Williamson <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed by: John Kennedy <[email protected]> Reviewed by: Dan Kimmel <[email protected]> Approved by: Garrett D'Amore <[email protected]> Ported-by: Don Brady <[email protected]> Ported-by: John Kennedy <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/7431 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/dfc11533 Porting Notes: * The CLI long option arguments for '-t' and '-m' don't parse on linux * Switched from kmem_alloc to vmem_alloc in zcp_lua_alloc * Lua implementation is built as its own module (zlua.ko) * Lua headers consumed directly by zfs code moved to 'include/sys/lua/' * There is no native setjmp/longjump available in stock Linux kernel. Brought over implementations from illumos and FreeBSD * The get_temporary_prop() was adapted due to VFS platform differences * Use of inline functions in lua parser to reduce stack usage per C call * Skip some ZFS Test Suite ZCP tests on sparc64 to avoid stack overflow
* Encryption Stability and On-Disk Format FixesTom Caputi2018-02-022-17/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The on-disk format for encrypted datasets protects not only the encrypted and authenticated blocks themselves, but also the order and interpretation of these blocks. In order to make this work while maintaining the ability to do raw sends, the indirect bps maintain a secure checksum of all the MACs in the block below it along with a few other fields that determine how the data is interpreted. Unfortunately, the current on-disk format erroneously includes some fields which are not portable and thus cannot support raw sends. It is not possible to easily work around this issue due to a separate and much smaller bug which causes indirect blocks for encrypted dnodes to not be compressed, which conflicts with the previous bug. In addition, the current code generates incompatible on-disk formats on big endian and little endian systems due to an issue with how block pointers are authenticated. Finally, raw send streams do not currently include dn_maxblkid when sending both the metadnode and normal dnodes which are needed in order to ensure that we are correctly maintaining the portable objset MAC. This patch zero's out the offending fields when computing the bp MAC and ensures that these MACs are always calculated in little endian order (regardless of the host system's byte order). This patch also registers an errata for the old on-disk format, which we detect by adding a "version" field to newly created DSL Crypto Keys. We allow datasets without a version (version 0) to only be mounted for read so that they can easily be migrated. We also now include dn_maxblkid in raw send streams to ensure the MAC can be maintained correctly. This patch also contains minor bug fixes and cleanups. Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #6845 Closes #6864 Closes #7052
* Fix 'zfs receive -o' when used with '-e|-d'LOLi2018-01-301-2/+3
| | | | | | | | | | | | | When used in conjunction with one of '-e' or '-d' zfs receive options none of the properties requested to be set (-o) are actually applied: this is caused by a wrong assumption made about the toplevel dataset in zfs_receive_one(). Fix this by correctly detecting the toplevel dataset. Reviewed-by: Tony Hutter <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #7088
* zpool import -d to specify device pathChunwei Chen2018-01-261-36/+130
| | | | | | | | | | | | | | | | | When we know which devices have the pool we are looking for, sometime it's better if we can directly pass those device paths to zpool import instead of letting it to search through all unrelated stuff, which might take a lot of time if you have hundreds of disks. This patch allows option -d <dev_path> to zpool import. You can have multiple pairs of -d <dev_path>, and zpool import will only search through those devices. For example: zpool import -d /dev/sda -d /dev/sdb Reviewed-by: Tony Hutter <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Chunwei Chen <[email protected]> Closes #7077
* OpenZFS 8652 - Tautological comparisons with ZPROP_INVALBrian Behlendorf2018-01-191-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | usr/src/uts/common/sys/fs/zfs.h Change ZPROP_INVAL and ZPROP_CONT from macros to enum values. Clang and GCC both prefer to use unsigned ints to store enums. That was causing tautological comparison warnings (and likely eliminating error handling code at compile time) whenever a zfs_prop_t or zpool_prop_t was compared to ZPROP_INVAL or ZPROP_CONT. Making the error flags be explicity enum values forces the enum types to be signed. ZPROP_INVAL was also compared against two different enum types. I had to change its name to ZPOOL_PROP_INVAL whenever its compared to a zpool_prop_t. There are still some places where ZPROP_INVAL or ZPROP_CONT is compared to a plain int, in code that doesn't know whether the int is storing a zfs_prop_t or a zpool_prop_t. usr/src/uts/common/fs/zfs/spa.c s/ZPROP_INVAL/ZPOOL_PROP_INVAL/ Authored by: Alan Somers <[email protected]> Approved by: Gordon Ross <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Igor Kozhukhov <[email protected]> Reviewed by: George Melikov <[email protected]> Ported-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/8652 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/c2de80dc74 Closes #7061
* OpenZFS 8641 - "zpool clear" and "zinject" don't work on "spare" or ↵Brian Behlendorf2018-01-191-5/+6
| | | | | | | | | | | | | | | | | | "replacing" vdevs Add "spare" and "replacing" to the list of interior vdev types in zpool_vdev_is_interior(), alongside the existing "mirror" and "raidz". This fixes running "zinject -d" and "zpool clear" on spare and replacing vdevs. Authored by: Alan Somers <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: George Melikov <[email protected]> Approved by: Gordon Ross <[email protected]> Ported-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/8641 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/9a36801382 Closes #7060
* OpenZFS 8898 - creating fs with checksum=skein on the boot pools fails ↵Yuri Pankov2018-01-111-1/+5
| | | | | | | | | | | | | | | ungracefully Authored by: Yuri Pankov <[email protected]> Reviewed by: Toomas Soome <[email protected]> Reviewed by: Andy Stormont <[email protected]> Reviewed-by: George Melikov <[email protected]> Approved by: Dan McDonald <[email protected]> Ported-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/8898 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/9fa2266d9a Closes #7031
* OpenZFS 8897 - zpool online -e fails assertion when run on non-leaf vdevsYuri Pankov2018-01-111-2/+4
| | | | | | | | | | | | | Authored by: Yuri Pankov <[email protected]> Reviewed by: Toomas Soome <[email protected]> Reviewed by: Igor Kozhukhov <[email protected]> Reviewed-by: George Melikov <[email protected]> Approved by: Dan McDonald <[email protected]> Ported-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/8897 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/9a551dd645 Closes #7030
* Support -fsanitize=address with --enable-asanBrian Behlendorf2018-01-101-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When --enable-asan is provided to configure then build all user space components with fsanitize=address. For kernel support use the Linux KASAN feature instead. https://github.com/google/sanitizers/wiki/AddressSanitizer When using gcc version 4.8 any test case which intentionally generates a core dump will fail when using --enable-asan. The default behavior is to disable core dumps and only newer versions allow this behavior to be controled at run time with the ASAN_OPTIONS environment variable. Additionally, this patch includes some build system cleanup. * Rules.am updated to set the minimum AM_CFLAGS, AM_CPPFLAGS, and AM_LDFLAGS. Any additional flags should be added on a per-Makefile basic. The --enable-debug and --enable-asan options apply to all user space binaries and libraries. * Compiler checks consolidated in always-compiler-options.m4 and renamed for consistency. * -fstack-check compiler flag was removed, this functionality is provided by asan when configured with --enable-asan. * Split DEBUG_CFLAGS in to DEBUG_CFLAGS, DEBUG_CPPFLAGS, and DEBUG_LDFLAGS. * Moved default kernel build flags in to module/Makefile.in and split in to ZFS_MODULE_CFLAGS and ZFS_MODULE_CPPFLAGS. These flags are set with the standard ccflags-y kbuild mechanism. * -Wframe-larger-than checks applied only to binaries or libraries which include source files which are built in both user space and kernel space. This restriction is relaxed for user space only utilities. * -Wno-unused-but-set-variable applied only to libzfs and libzpool. The remaining warnings are the result of an ASSERT using a variable when is always declared. * -D_POSIX_PTHREAD_SEMANTICS and -D__EXTENSIONS__ dropped because they are Solaris specific and thus not needed. * Ensure $GDB is defined as gdb by default in zloop.sh. Signed-off-by: DHE <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #7027
* Update for cppcheck v1.80Brian Behlendorf2017-11-182-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Resolve new warnings and errors from cppcheck v1.80. * [lib/libshare/libshare.c:543]: (warning) Possible null pointer dereference: protocol * [lib/libzfs/libzfs_dataset.c:2323]: (warning) Possible null pointer dereference: srctype * [lib/libzfs/libzfs_import.c:318]: (error) Uninitialized variable: link * [module/zfs/abd.c:353]: (error) Uninitialized variable: sg * [module/zfs/abd.c:353]: (error) Uninitialized variable: i * [module/zfs/abd.c:385]: (error) Uninitialized variable: sg * [module/zfs/abd.c:385]: (error) Uninitialized variable: i * [module/zfs/abd.c:553]: (error) Uninitialized variable: i * [module/zfs/abd.c:553]: (error) Uninitialized variable: sg * [module/zfs/abd.c:763]: (error) Uninitialized variable: i * [module/zfs/abd.c:763]: (error) Uninitialized variable: sg * [module/zfs/abd.c:305]: (error) Uninitialized variable: tmp_page * [module/zfs/zpl_xattr.c:342]: (warning) Possible null pointer dereference: value * [module/zfs/zvol.c:208]: (error) Uninitialized variable: p Convert the following suppression to inline. * [module/zfs/zfs_vnops.c:840]: (error) Possible null pointer dereference: aiov Exclude HAVE_UIO_ZEROCOPY and HAVE_DNLC from analysis since these macro's will never be defined until this functionality is implemented. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #6879
* Sequential scrub and resilversTom Caputi2017-11-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, scrubs and resilvers can take an extremely long time to complete. This is largely due to the fact that zfs scans process pools in logical order, as determined by each block's bookmark. This makes sense from a simplicity perspective, but blocks in zfs are often scattered randomly across disks, particularly due to zfs's copy-on-write mechanisms. This patch improves performance by splitting scrubs and resilvers into a metadata scanning phase and an IO issuing phase. The metadata scan reads through the structure of the pool and gathers an in-memory queue of I/Os, sorted by size and offset on disk. The issuing phase will then issue the scrub I/Os as sequentially as possible, greatly improving performance. This patch also updates and cleans up some of the scan code which has not been updated in several years. Reviewed-by: Brian Behlendorf <[email protected]> Authored-by: Saso Kiselkov <[email protected]> Authored-by: Alek Pinchuk <[email protected]> Authored-by: Tom Caputi <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #3625 Closes #6256
* Fix column alignment with long zpool namesGeorge G2017-11-051-2/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | `zpool status` normally aligns NAME/STATE/etc columns: NAME STATE READ WRITE CKSUM dummy ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 /tmp/dummy-long-1.bin ONLINE 0 0 0 /tmp/dummy-long-2.bin ONLINE 0 0 0 mirror-1 ONLINE 0 0 0 /tmp/dummy-long-3.bin ONLINE 0 0 0 /tmp/dummy-long-4.bin ONLINE 0 0 0 However, if the zpool name is longer than the zvol names, alignment issues arise: NAME STATE READ WRITE CKSUM dummy-very-very-long-zpool-name ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 /tmp/dummy-1.bin ONLINE 0 0 0 /tmp/dummy-2.bin ONLINE 0 0 0 mirror-1 ONLINE 0 0 0 /tmp/dummy-3.bin ONLINE 0 0 0 /tmp/dummy-4.bin ONLINE 0 0 0 `zpool iostat` and `zpool import` are also affected: capacity operations bandwidth pool alloc free read write read write ---------- ----- ----- ----- ----- ----- ----- dummy 104K 1.97G 0 0 152 9.84K dummy-very-very-long-zpool-name 152K 1.97G 0 1 144 13.1K ---------- ----- ----- ----- ----- ----- ----- dummy-very-very-long-zpool-name ONLINE mirror-0 ONLINE /tmp/dummy-1.bin ONLINE /tmp/dummy-2.bin ONLINE mirror-1 ONLINE /tmp/dummy-3.bin ONLINE /tmp/dummy-4.bin ONLINE Reviewed-by: George Melikov <[email protected]> Reviewed-by: Tony Hutter <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: George Gaydarov <[email protected]> Closes #6786
* Added no_scrub_restart flag to zpool reopenArkadiusz Bubała2017-10-261-11/+12
| | | | | | | | | | | | | | | | | | | | | | | Added -n flag to zpool reopen that allows a running scrub operation to continue if there is a device with Dirty Time Log. By default if a component device has a DTL and zpool reopen is executed all running scan operations will be restarted. Added functional tests for `zpool reopen` Tests covers following scenarios: * `zpool reopen` without arguments, * `zpool reopen` with pool name as argument, * `zpool reopen` while scrubbing, * `zpool reopen -n` while scrubbing, * `zpool reopen -n` while resilvering, * `zpool reopen` with bad arguments. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Tom Caputi <[email protected]> Signed-off-by: Arkadiusz Bubała <[email protected]> Closes #6076 Closes #6746
* Add convenience 'zfs_get' functionsJohn2017-10-191-0/+16
| | | | | | | | Add get functions to match existing ones. Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: John Ramsden <[email protected]> Closes #6308
* Fix function documentation to correctly mirror codeTobin Harding2017-10-131-1/+1
| | | | | | | | | | Currently the function documentation states that two strings are allocated, this is outdated. Only one char ** parameter is passed into the function now, clearly only a pointer to a single string is returned and needs to be free'd. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tobin C. Harding <[email protected]> Closes #6754
* Encryption patch follow-upTom Caputi2017-10-115-145/+171
| | | | | | | | | | | | | | | | | | | | | | | | | | | | * PBKDF2 implementation changed to OpenSSL implementation. * HKDF implementation moved to its own file and tests added to ensure correctness. * Removed libzfs's now unnecessary dependency on libzpool and libicp. * Ztest can now create and test encrypted datasets. This is currently disabled until issue #6526 is resolved, but otherwise functions as advertised. * Several small bug fixes discovered after enabling ztest to run on encrypted datasets. * Fixed coverity defects added by the encryption patch. * Updated man pages for encrypted send / receive behavior. * Fixed a bug where encrypted datasets could receive DRR_WRITE_EMBEDDED records. * Minor code cleanups / consolidation. Signed-off-by: Tom Caputi <[email protected]>
* Fix intra-pool resumable 'zfs send -t <token>'LOLi2017-10-102-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Because resuming from a token requires "guid" -> "snapshot" mapping we have to walk the whole dataset hierarchy to find the right snapshot to send; when both source and destination exists, for an incremental resumable stream, libzfs gets confused and picks up the wrong snapshot to send from: this results in attempting to send "destination@snap1 -> source@snap2" instead of "source@snap1 -> source@snap2" which fails with a "Invalid cross-device link" error (EXDEV). Fix this by adjusting the logic behind dataset traversal in zfs_iter_children() to pick the right snapshot to send from. Additionally update dry-run 'zfs send -t' to print its output to stderr: this is consistent with other dry-run commands. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #6618 Closes #6619 Closes #6623
* Fix some ZFS Test Suite issuesLOLi2017-09-251-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Add 'zfs bookmark' coverage (zfs_bookmark_cliargs) * Add OpenZFS 8166 coverage (zpool_scrub_offline_device) * Fix "busy" zfs_mount_remount failures * Fix bootfs_003_pos, bootfs_004_neg, zdb_005_pos local cleanup * Update usage of $KEEP variable, add get_all_pools() function * Enable history_008_pos and rsend_019_pos (non-32bit builders) * Enable zfs_copies_005_neg, update local cleanup * Fix zfs_send_007_pos (large_dnode + OpenZFS 8199) * Fix rollback_003_pos (use dataset name, not mountpoint, to unmount) * Update default_raidz_setup() to work properly with more than 3 disks * Use $TEST_BASE_DIR instead of hardcoded (/var)/tmp for file VDEVs * Update usage of /dev/random to /dev/urandom Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Issue #6086 Closes #5658 Closes #6143 Closes #6421 Closes #6627 Closes #6632
* Remove FRU and LIBTOPO SupportDavid Quigley2017-09-183-477/+0
| | | | | | | | | FRU and LIBTOPO support are illumos only features that will not be ported to Linux and make the code more complicated than necessary. This commit makes way for further cleanups of the zed/FMA code. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: David Quigley <[email protected]> Closes #6641
* Relax (ref)reservation constraints on ZVOLsLOLi2017-09-121-14/+0
| | | | | | | | | | | | | This change allow (ref)reservation to be set larger than the current ZVOL size: this is safe as we normally set refreservation > volsize at ZVOL creation time when we account for metadata. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: George Melikov <[email protected]> Reviewed by: Richard Elling <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #2468 Closes #6610
* Add -vnP support to 'zfs send' for bookmarksLOLi2017-09-081-15/+38
| | | | | | | | | This leverages the functionality introduced in cf7684b to expose verbose, dry-run and parsable 'zfs send' options for bookmarks. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #3666 Closes #6601
* Retire send space estimation via ZFS_IOC_SENDLOLi2017-08-311-27/+28
| | | | | | | | | | | | | | Add a small wrapper around libzfs_core`lzc_send_space() to libzfs so that every legacy ZFS_IOC_SEND consumer, along with their userland counterpart estimate_ioctl(), can leverage ZFS_IOC_SEND_SPACE to request send space estimation. The legacy functionality in zfs_ioc_send() is left untouched for compatibility purposes. Reviewed by: Thomas Caputi <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #6029
* Send / Recv Fixes following b52563Tom Caputi2017-08-231-0/+6
| | | | | | | | | | | | | | | | | | | | | | This patch fixes several issues discovered after the encryption patch was merged: * Fixed a bug where encrypted datasets could attempt to receive embedded data records. * Fixed a bug where dirty records created by the recv code wasn't properly setting the dr_raw flag. * Fixed a typo where a dmu_tx_commit() was changed to dmu_tx_abort() * Fixed a few error handling bugs unrelated to the encryption patch in dmu_recv_stream() Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #6512 Closes #6524 Closes #6545
* 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 Caputi2017-08-149-58/+2283
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* Add libtpool (thread pools)Brian Behlendorf2017-08-094-27/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
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