Arkadiusz Bubała [Fri, 10 Nov 2017 21:37:10 +0000 (22:37 +0100)]
Long hold the dataset during upgrade
If the receive or rollback is performed while filesystem is upgrading
the objset may be evicted in `dsl_dataset_clone_swap_sync_impl`. This
will lead to NULL pointer dereference when upgrade tries to access
evicted objset.
This commit adds long hold of dataset during whole upgrade process.
The receive and rollback will return an EBUSY error until the
upgrade is not finished.
Tom Caputi [Wed, 8 Nov 2017 23:25:30 +0000 (18:25 -0500)]
Fix encryption root hierarchy issue
After doing a recursive raw receive, zfs userspace performs
a final pass to adjust the encryption root hierarchy as
needed. Unfortunately, the FORCE_INHERIT ioctl had a bug
which caused the encryption root to always be assigned to
the direct parent instead of the inheriting parent. This
patch simply fixes this issue.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Alek Pinchuk <apinchuk@datto.com> Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #6847
Closes #6848
Tim Chase [Wed, 8 Nov 2017 21:32:15 +0000 (15:32 -0600)]
Handle compressed buffers in __dbuf_hold_impl()
In __dbuf_hold_impl(), if a buffer is currently syncing and is still
referenced from db_data, a copy is made in case it is dirtied again in
the txg. Previously, the buffer for the copy was simply allocated with
arc_alloc_buf() which doesn't handle compressed or encrypted buffers
(which are a special case of a compressed buffer). The result was
typically an invalid memory access because the newly-allocated buffer
was of the uncompressed size.
This commit fixes the problem by handling the 2 compressed cases,
encrypted and unencrypted, respectively, with arc_alloc_raw_buf() and
arc_alloc_compressed_buf().
Although using the proper allocation functions fixes the invalid memory
access by allocating a buffer of the compressed size, another unrelated
issue made it impossible to properly detect compressed buffers in the
first place. The header's compression flag was set to ZIO_COMPRESS_OFF
in arc_write() when it was possible that an attached buffer was actually
compressed. This commit adds logic to only set ZIO_COMPRESS_OFF in
the non-ZIO_RAW case which wil handle both cases of compressed buffers
(encrypted or unencrypted).
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Tim Chase <tim@chase2k.com>
Closes #5742
Closes #6797
Antonio Russo [Wed, 8 Nov 2017 17:39:15 +0000 (12:39 -0500)]
Cleanup systemd dependencies
Some redundancy is present in the systemd dependencies, as
noticed in PR#6764. Existing setups might rely on these quirks,
so these cleanups have been moved to the development branch.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Melikov <mail@gmelikov.ru> Signed-off-by: Antonio Russo <antonio.e.russo@gmail.com>
Closes #6822
LOLi [Wed, 8 Nov 2017 17:16:37 +0000 (18:16 +0100)]
Fix undefined %{systemd_svcs} in RPM scriptlets
This allows RPM-based systems to properly control package installation
and removal when using systemd.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #6838
Closes #6841
Reviewed by: Yuri Pankov <yuripv@gmx.com>
Reviewed by: Igor Kozhukhov <igor@dilos.org>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Authored by: Toomas Soome <tsoome@me.com> Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>
OpenZFS-issue: https://www.illumos.org/issues/8607
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/b852c2f5
Closes #6842
A prior commit changed test-runner to enable tagging
of testgroups within a test suite runfile. They must
be specified in each runfile. Update the runfile for
performance regressions so it is properly tagged.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6830
LOLi [Tue, 7 Nov 2017 22:55:31 +0000 (23:55 +0100)]
Fix zfs-tests.sh single test functionality
Without any tag specified into the runtime-generated runfile the
test-runner will not execute the test provided from the command line:
fix this by adding tag information to the custom runfile.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #6826
wli5 [Tue, 7 Nov 2017 22:51:30 +0000 (06:51 +0800)]
Bug fix in qat_compress.c when compressed size is < 4KB
When the 128KB block is compressed to less than 4KB, the pointer
to the Footer is not in the end of the compressed buffer, that's
because the Header offset was added twice for this case. So there
is a gap between the Footer and the compressed buffer.
1. Always compute the Footer pointer address from the start of the
last page.
2. Remove the un-used workaroud code which has been verified fixed
with the latest driver and this fix.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Melikov <mail@gmelikov.ru> Signed-off-by: Weigang Li <weigang.li@intel.com>
Closes #6827
Sort list of tunables printed by _tunable_summary()
alphabetically
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: Scot W. Stevenson <scot.stevenson@gmail.com>
Closes #6828
By default additional dependencies are generated automatically for
packages. This is normally a good thing because it helps ensure
things just work. It doesn't make sense for the DKMS package which
requires minimal dependencies that can be easily listed.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: loli10K <ezomori.nozomu@gmail.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6467
Closes #6835
Don Brady [Tue, 7 Nov 2017 18:42:15 +0000 (11:42 -0700)]
Build regression in c89 cleanups
Fixed build regression in non-debug builds from recent cleanups of
c89 workarounds.
Reviewed-by: Tim Chase <tim@chase2k.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Don Brady <don.brady@delphix.com>
Closes #6832
George Melikov [Tue, 7 Nov 2017 18:32:04 +0000 (21:32 +0300)]
Disable zpool_import_missing_003_pos
Rarely observed failure of zpool_import_missing_003_pos during
automated testing due to timeout. Disable the test case until
it can be improved.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: George Melikov <mail@gmelikov.ru>
Issue #6839
Closes #6840
Include docstrings (PEP8, PEP257) for module and all functions.
Separately, remove outdated section in comment at start of
module. Separately, remove unused global constant "usetunable".
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: Scot W. Stevenson <scot.stevenson@gmail.com>
Closes #6818
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: George Gaydarov <git@gg7.io>
Closes #6786
Complete rewrite of fHits(). Move units from non-standard English
abbreviations to SI units, thereby avoiding confusion because of
"long scale" and "short scale" numbers. Remove unused parameter
"Decimal". Add function string. Aim to confirm to PEP8.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: Scot W. Stevenson <scot.stevenson@gmail.com>
Closes #6815
Don Brady [Sat, 4 Nov 2017 20:25:13 +0000 (14:25 -0600)]
Undo c89 workarounds to match with upstream
With PR 5756 the zfs module now supports c99 and the
remaining past c89 workarounds can be undone.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Melikov <mail@gmelikov.ru> Signed-off-by: Don Brady <don.brady@delphix.com>
Closes #6816
Simplify and inline single-use function div1(); inline twice-used
function div2(); add function comment to zfs_header(); replace
variable "unused" in get_Kstat() with "_" following convention.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: Scot W. Stevenson <scot.stevenson@gmail.com>
Closes #6802
* initramfs: Fix inconsistent whitespace
* initramfs: Fix a spelling error
* initramfs: Set elevator=noop on the rpool's disks
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Melikov <mail@gmelikov.ru> Signed-off-by: Richard Laager <rlaager@wiktel.com>
Closes #6807
Enable test-runner to accept a list of tags to identify
which test groups the user wishes to run.
Also allow test-runner to perform multiple iterations
of a test run.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: John Wren Kennedy <john.kennedy@delphix.com> Reviewed-by: George Melikov <mail@gmelikov.ru> Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6788
Richard Laager [Thu, 2 Nov 2017 02:54:56 +0000 (21:54 -0500)]
initramfs: Set elevator=noop on the rpool's disks
ZFS already sets elevator=noop for wholedisk vdevs (for all pools), but
typical root-on-ZFS installations use partitions. This sets
elevator=noop on the disks in the root pool.
Ubuntu 16.04 and 16.10 had this. It was lost in 17.04 due to Debian
switching to this upstream initramfs script.
Signed-off-by: Richard Laager <rlaager@wiktel.com>
Jason King [Tue, 13 Jun 2017 09:16:45 +0000 (04:16 -0500)]
OpenZFS 640 - number_to_scaled_string is duplicated in several commands
Porting Notes:
- The OpenZFS patch added nicenum_scale() and nicenum() to a
library not used by ZFS. Rather than pull in a new dependency
the version of nicenum in lib/libzpool/util.c was simply
replaced with the new one.
Reviewed by: Sebastian Wiedenroth <wiedi@frubar.net>
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Yuri Pankov <yuripv@gmx.com>
Approved by: Dan McDonald <danmcd@joyent.com>
Authored by: Jason King <jason.brian.king@gmail.com> Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>
OpenZFS-issue: https://www.illumos.org/issues/640
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/0a055120
Closes #6796
Replace if-elif-else construction with shorter loop;
remove unused parameter "Decimal"; centralize format
string; add function documentation string; conform to
PEP8.
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Scot W. Stevenson <scot.stevenson@gmail.com>
Closes #6784
Antonio Russo [Mon, 30 Oct 2017 20:18:26 +0000 (16:18 -0400)]
systemd zfs-import.target and documentation
zfs-import-{cache,scan}.service must complete before any mounting of
filesystems can occur. To simplify this dependency, create a target
that is reached After (in the systemd sense) the pool is imported.
Additionally, recommend that legacy zfs mounts use the option
x-systemd.requires=zfs-import.target
to codify this requirement.
Reviewed-by: Fabian Grünbichler <f.gruenbichler@proxmox.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: Antonio Russo <antonio.e.russo@gmail.com>
Closes #6764
abraunegg [Mon, 30 Oct 2017 20:15:10 +0000 (07:15 +1100)]
Update zfs module parameters man5
Update zfs module parameters man5 with missing parameter details
for multiple tunings.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: Alex Braunegg <alex.braunegg@gmail.com>
Closes #6785
Brian Behlendorf [Fri, 27 Oct 2017 22:52:03 +0000 (15:52 -0700)]
Fix status command options in zpool(8)
The 'zpool status' command supports the -P option for printing full
path names. It does not support the -p parsable option for printing
exact values.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: loli10K <ezomori.nozomu@gmail.com> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6792
Closes #6794
Brian Behlendorf [Fri, 27 Oct 2017 19:46:35 +0000 (12:46 -0700)]
OpenZFS 8081 - Compiler warnings in zdb
Fix compiler warnings in zdb. With these changes, FreeBSD can compile
zdb with all compiler warnings enabled save -Wunused-parameter.
usr/src/cmd/zdb/zdb.c
usr/src/cmd/zdb/zdb_il.c
usr/src/uts/common/fs/zfs/sys/sa.h
usr/src/uts/common/fs/zfs/sys/spa.h
Fix numerous warnings, including:
* const-correctness
* shadowing global definitions
* signed vs unsigned comparisons
* missing prototypes, or missing static declarations
* unused variables and functions
* Unreadable array initializations
* Missing struct initializers
usr/src/cmd/zdb/zdb.h
Add a header file to declare common symbols
usr/src/lib/libzpool/common/sys/zfs_context.h
usr/src/uts/common/fs/zfs/arc.c
usr/src/uts/common/fs/zfs/dbuf.c
usr/src/uts/common/fs/zfs/spa.c
usr/src/uts/common/fs/zfs/txg.c
Add a function prototype for zk_thread_create, and ensure that every
callback supplied to this function actually matches the prototype.
usr/src/cmd/ztest/ztest.c
usr/src/uts/common/fs/zfs/sys/zil.h
usr/src/uts/common/fs/zfs/zfs_replay.c
usr/src/uts/common/fs/zfs/zvol.c
Add a function prototype for zil_replay_func_t, and ensure that
every function of this type actually matches the prototype.
usr/src/uts/common/fs/zfs/sys/refcount.h
Change FTAG so it discards any constness of __func__, necessary
since existing APIs expect it passed as void *.
Porting Notes:
- Many of these fixes have already been applied to Linux. For
consistency the OpenZFS version of a change was applied if the
warning was addressed in an equivalent but different fashion.
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Authored by: Alan Somers <asomers@gmail.com>
Approved by: Richard Lowe <richlowe@richlowe.net> Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>
OpenZFS-issue: https://www.illumos.org/issues/8081
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/843abe1b8a
Closes #6787
The current make recipe for mancheck silently ignores errors. Correct
the recipe so errors cause the mancheck recipe fail.
The zpool reopen command in the zpool.8 manpage had a bullet list
without an .El.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: loli10K <ezomori.nozomu@gmail.com> Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6790
LOLi [Thu, 26 Oct 2017 23:58:38 +0000 (01:58 +0200)]
ZFS send fails to dump objects larger than 128PiB
When dumping objects larger than 128PiB it's possible for do_dump() to
miscalculate the FREE_RECORD offset due to an integer overflow
condition: this prevents the receiving end from correctly restoring
the dumped object.
Brian Behlendorf [Thu, 26 Oct 2017 19:57:53 +0000 (12:57 -0700)]
OpenZFS 8558, 8602 - lwp_create() returns EAGAIN
8558 lwp_create() returns EAGAIN on system with more than 80K ZFS filesystems
On a system with more than 80K ZFS filesystems, we've seen cases
where lwp_create() will start to fail by returning EAGAIN. The
problem being, for each of those 80K ZFS filesystems, a taskq will
be created for each dataset as part of the ZIL for each dataset.
Porting Notes:
- The new nomem taskq kstat was dropped.
- Added module options and documentation for new tunings
zfs_zil_clean_taskq_nthr_pct, zfs_zil_clean_taskq_minalloc,
zfs_zil_clean_taskq_maxalloc, and zfs_sync_taskq_batch_pct.
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Sebastien Roy <sebastien.roy@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Authored by: Prakash Surya <prakash.surya@delphix.com> Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Chris Dunlop <chris@onthe.net.au> Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>
OpenZFS-issue: https://www.illumos.org/issues/8558
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/216d772
8602 remove unused "dp_early_sync_tasks" field from "dsl_pool" structure
Reviewed by: Serapheim Dimitropoulos <serapheim@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Authored by: Prakash Surya <prakash.surya@delphix.com> Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Chris Dunlop <chris@onthe.net.au> Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>
OpenZFS-issue: https://www.illumos.org/issues/8602
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/2bcb545
Closes #6779
Arkadiusz Bubała [Thu, 26 Oct 2017 19:26:09 +0000 (21:26 +0200)]
Added no_scrub_restart flag to zpool reopen
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 <behlendorf1@llnl.gov> Reviewed-by: Tom Caputi <tcaputi@datto.com> Signed-off-by: Arkadiusz Bubała <arkadiusz.bubala@open-e.com>
Closes #6076
Closes #6746
Otherwise, if arcstat gets interrupted before the desired number of
iterations is reached, the output file will be empty (both if set via
'-o' or via shell redirection).
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Closes #6775
Allow commitcheck.sh to handle multiple OpenZFS ports in
a single commit. This is useful in the cases when a change
upstream has bug fixes and it makes sense to port them with
the original patch.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Chris Dunlop <chris@onthe.net.au> Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6780
Enable commitcheck.sh to test if a commit message is
in the expected format for a coverity defect fix.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6777
Use mfu_size and mru_size pulled from the arcstats
kstat file to calculate the mfu and mru percentages
for arc size breakdown.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: AndCycle <andcycle@andcycle.idv.tw> Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #5526
Closes #6770
Fix new flake8 errors related to bare excepts and ambiguous
variable names due to a STYLE builder update.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6776
David Quigley [Mon, 23 Oct 2017 18:42:37 +0000 (12:42 -0600)]
ZTS: Add auto-spare tests
The ZED is expected to automatically kick in a hot spare device
when there's one available in the pool and a sufficient number of
read errors have been encountered. Use zinject to simulate the
failure condition and verify the hot spare is used.
auto_spare_001_pos.ksh: read IO errors, the vdev is FAULTED
auto_spare_002_pos.ksh: read CHECKSUM errors, the vdev is DEGRADE
Reviewed by: Richard Elling <Richard.Elling@RichardElling.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: David Quigley <david.quigley@intel.com>
Closes #6280
Provide commit message format for Coverity defects
Provide details about the commit message format for Coverity defect
fixes submitted.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Melikov <mail@gmelikov.ru> Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6771
Brian Behlendorf [Mon, 23 Oct 2017 16:45:59 +0000 (09:45 -0700)]
Emit history events for 'zpool create'
History commands and events were being suppressed for the
'zpool create' command since the history object did not
yet exist. Create the object earlier so this history
doesn't get lost.
Split the pool_destroy event in to pool_destroy and
pool_export so they may be distinguished.
Updated events_001_pos and events_002_pos test cases. They
now check for the expected history events and were reworked
to be more reliable.
Reviewed-by: Nathaniel Clark <nathaniel.l.clark@intel.com> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6712
Closes #6486
wli5 [Fri, 20 Oct 2017 18:11:25 +0000 (02:11 +0800)]
Support integration with new QAT products
Support integration with new QAT products: Intel(R) C62x Chipset,
or Atom(R) C3000 Processor Product Family SoC:
1. Detect new file name in auto-conf.
2. Change MAX_INSTANCES to 48.
3. Change "num_inst" to U16 to clean a build warning.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Weigang Li <weigang.li@intel.com>
Closes #6767
John [Thu, 19 Oct 2017 18:18:42 +0000 (11:18 -0700)]
Add convenience 'zfs_get' functions
Add get functions to match existing ones.
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: John Ramsden <johnramsden@riseup.net>
Closes #6308
Brian Behlendorf [Thu, 19 Oct 2017 17:06:55 +0000 (10:06 -0700)]
Remove vn_rename and vn_remove dependency
The only place vn_rename and vn_remove are used is when writing
out an updated pool configuration file. By truncating the file
instead of renaming and removing it we can avoid having to implement
these interfaces entirely. Functionally an empty cache file is
treated the same as a missing cache file. This is particularly
advantageous because the Linux kernel has never provided a way
to reliably implement vn_rename and vn_remove.
The cachefile_004_pos.ksh test case was updated to understand
that an empty cache file is the same as a missing one.
The zfs-import-* systemd service files were not updated to use
ConditionFileNotEmpty in place of ConditionPathExists. This
means that after exporting all pools and rebooting new pools
will not the scanned for on the next boot. This small change
should not impact normal usage since pools are not exported
as part of a normal shutdown.
Documentation was updated accordingly.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Arkadiusz Bubała <arkadiusz.bubala@open-e.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes zfsonlinux/spl#648
Closes #6753
Brian Behlendorf [Wed, 18 Oct 2017 17:07:02 +0000 (10:07 -0700)]
Update codecov.io behavior
Update the codecov.yml included in the repository to behave as
originally intended. This can be refined as needed.
* Always post coverage results to the GitHub PR after two builds
have been uploaded. This is the normal case since there will
be a build uploaded for both kernel and user coverage results.
* Adjust red -> yellow -> green coloring in the web interface.
Due to the number of unlikely error conditions which are hard
to force consider 90% coverage an excellent level of coverage.
* Allow a 1% variance in coverage between test runs. This is
approximately 10x larger than the typical variance observed
which leaves us a reasonable margin to prevent false positives.
* Always post a new smaller comment to PRs which does not include
a file list. Old coverage reports are removed.
Tobin Harding [Mon, 16 Oct 2017 22:32:48 +0000 (09:32 +1100)]
Fix coverity defects: 147480, 147584
CID 147480: Logically dead code (DEADCODE)
Remove non-null check and subsequent function call. Add ASSERT to future
proof the code.
usage label is only jumped to before `zhp` is initialized.
CID 147584: Out-of-bounds access (OVERRUN)
Subtract length of current string from buffer length for `size` argument
to `snprintf`.
Starting address for the write is the start of the buffer + the current
string length. We need to subtract this string length else risk a buffer
overflow.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Tobin C. Harding <me@tobin.cc>
Closes #6745
* config/deb.am: Enable building DKMS packages for Debian
* rpm/generic/zfs-dkms.spec.in: Adjust spec to be Debian-compatible
* Condition kernel-devel Req to RPM distros
* Adjust the DKMS Req to have a minimum of a version only
* Ensure that --rpm_safe_upgrade isn't used on non-RPM distros
* config/deb.am: Drop CONFIG_KERNEL and CONFIG_USER guards
* Makefile.am: Add pkg-dkms target
Tobin Harding [Fri, 13 Oct 2017 19:42:04 +0000 (06:42 +1100)]
Fix function documentation to correctly mirror code
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 <behlendorf1@llnl.gov> Signed-off-by: Tobin C. Harding <me@tobin.cc>
Closes #6754
Brian Behlendorf [Fri, 13 Oct 2017 19:39:39 +0000 (12:39 -0700)]
Increase default zloop.sh vdev size
The default 128M vdev size used by zloop.sh isn't always large
enough and can result in ENOSPC failures which suspend the pool.
Increase the default size to 512M and provide a -s option which
can be used to specify an alternate size.
This does increase the free space requirements to run zloop.sh.
However, since the vdevs are sparse 4x the space is not required.
Reviewed-by: Don Brady <don.brady@delphix.com> Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6758
Brian Behlendorf [Fri, 13 Oct 2017 17:02:39 +0000 (10:02 -0700)]
Post-Encryption Followup
This PR includes fixes for bugs and documentation issues found
after the encryption patch was merged and general code improvements
for long-term maintainability.
Brian Behlendorf [Thu, 12 Oct 2017 16:51:56 +0000 (09:51 -0700)]
Fixes for SPARC support
The current code base almost compiles on SPARC, but a few fixes are
required for the code to compile (and work efficiently). Code in this
PR comes from OpenZFS project which was initially dropped when porting
the crypto framework.
Antonio Russo [Thu, 12 Oct 2017 16:39:45 +0000 (12:39 -0400)]
Explicitly depend on icp module in initramfs hook
Automatic dependency resolution is unreliable on many systems.
Follow suit with existing code, and explicitly include icp
in module dependencies.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Antonio Russo <antonio.e.russo@gmail.com>
Closes #6751
Tom Caputi [Tue, 3 Oct 2017 17:18:45 +0000 (13:18 -0400)]
Fix for #6706
This patch resolves an issue where raw sends would fail to send
encryption parameters if the wrapping key was unloaded and reloaded
before the data was sent and the dataset wass not an encryption root.
The code attempted to lookup the values from the wrapping key which
was not being initialized upon reload. This change forces the code to
lookup the correct value from the encryption root's DSL Crypto Key.
Unfortunately, this issue led to the on-disk DSL Crypto Key for some
non-encryption root datasets being left with zeroed out encryption
parameters. However, this should not present a problem since these
values are never looked at and are overrwritten upon changing keys.
This patch also fixes an issue where raw, resumable sends were not
being cleaned up appropriately if an invalid DSL Crypto Key was
received.
Tom Caputi [Tue, 3 Oct 2017 01:55:39 +0000 (21:55 -0400)]
Fix for #6703
This patch resolves an issue where spa_keystore_change_key_sync_impl()
incorrectly recursed into clone DSL Directories while recursively
rewrapping encryption keys. Clones share keys with their origins, so
this logic was incorrect.
Tom Caputi [Thu, 28 Sep 2017 15:49:13 +0000 (11:49 -0400)]
Fixes for #6639
Several issues were uncovered by running stress tests with zfs
encryption and raw sends in particular. The issues and their
associated fixes are as follows:
* arc_read_done() has the ability to chain several requests for
the same block of data via the arc_callback_t struct. In these
cases, the ARC would only use the first request's dsobj from
the bookmark to decrypt the data. This is problematic because
the first request might be a prefetch zio which is able to
handle the key not being loaded, while the second might use a
different key that it is sure will work. The fix here is to
pass the dsobj with each individual arc_callback_t so that each
request can attempt to decrypt the data separately.
* DRR_FREE and DRR_FREEOBJECT records in a send file were not
having their transactions properly tagged as raw during raw
sends, which caused a panic when the dbuf code attempted to
decrypt these blocks.
* traverse_prefetch_metadata() did not properly set
ZIO_FLAG_SPECULATIVE when issuing prefetch IOs.
* Added a few asserts and code cleanups to ensure these issues
are more detectable in the future.
Tom Caputi [Wed, 11 Oct 2017 16:12:48 +0000 (12:12 -0400)]
Relax ASSERT for #6526
This patch resolves a minor issue where an ASSERT in
metaslab_passivate() that only applies to non weight-based
metaslabs was erroneously applied to all metaslabs.
KireinaHoro [Wed, 11 Oct 2017 05:16:46 +0000 (13:16 +0800)]
SPARC optimizations for Encode()
Normally a SPARC processor runs in big endian mode. Save the extra labor
needed for little endian machines when the target is a big endian one
(sparc).
KireinaHoro [Wed, 11 Oct 2017 05:09:43 +0000 (13:09 +0800)]
SPARC optimizations for SHA1Transform()
Passing arguments explicitly into SHA1Transform() increases the number of
registers abailable to the compiler, hence leaving more local and out registers
available. The missing symbol of sha1_consts[], which prevents compiling on
SPARC, is added back, which speeds up the process of utilizing the relative
constants.
This should fix #6738.
Brian Behlendorf [Wed, 11 Oct 2017 16:15:44 +0000 (09:15 -0700)]
Fix chattr/cleanup failure
The chattr cleanup step may fail to delete the user if there is still
an active process running as that user. Retry the userdel when this
occurs to eliminate spurious false positves.
ERROR: userdel quser1 exited 8
userdel: user quser1 is currently used by process 26814
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6749
When sending an incremental stream based on a snapshot, the receiving
side must have the same base snapshot. Thus we do not need to send
FREEOBJECTS records for any objects past the maximum one which exists
locally.
This allows us to send incremental streams (again) to older ZFS
implementations (e.g. ZoL < 0.7) which actually try to free all objects
in a FREEOBJECTS record, instead of bailing out early.
Reviewed by: Paul Dagnelie <pcd@delphix.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Closes #5699
Closes #6507
Closes #6616
All objects after the last written or freed object are not supposed to
exist after receiving the stream. Free them accordingly, as if a
freeobjects record for them had been included in the stream.
Reviewed by: Paul Dagnelie <pcd@delphix.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Closes #5699
Closes #6507
Closes #6616
LOLi [Tue, 10 Oct 2017 22:22:05 +0000 (00:22 +0200)]
Fix intra-pool resumable 'zfs send -t <token>'
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 <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #6618
Closes #6619
Closes #6623
Brian Behlendorf [Tue, 10 Oct 2017 22:19:19 +0000 (15:19 -0700)]
Fix ARC behavior on 32-bit systems
With the addition of the ABD changes consumption of the virtual
address space has been greatly reduced. This exposed an issue on
CONFIG_HIGHMEM systems where free memory was being calculated
incorrectly. Functionally this didn't cause any major problems
prior to ABD because a lack of available virtual address space
was used as an indicator of low memory.
This patch makes the following changes to address the issue and
in the process realigns the code further with OpenZFS. There
are no substantive changes in behavior for 64-bit systems.
* Added CONFIG_HIGHMEM case to the arc_all_memory() and
arc_free_memory() functions to only consider low memory pages
on CONFIG_HIGHMEM systems.
* The arc_free_memory() function was updated to return bytes
instead of pages to be consistent with the other helper
functions. In user space we make up some reasonable values
since currently only testing is performed in this context.
* Adds three new values to the arcstats kstat to provide visibility
in to the ARC's assessment of the memory situation:
memory_all_bytes, memory_free_bytes, and memory_available_bytes.
* Added kmem_reap() call to arc_available_memory() for 32-bit
builds to realign code with OpenZFS.
* Reduced size of test file in /async_destroy_001_pos.ksh to
speed up test case. Multiple txgs are still required.
* Move vdevs used by zpool_clear_001_pos and zpool_upgrade_002_pos
to TEST_BASE_DIR location to speed up test cases.
Reviewed-by: David Quigley <david.quigley@intel.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #5352
Closes #6734
Tobin Harding [Fri, 6 Oct 2017 02:38:55 +0000 (13:38 +1100)]
Use bitwise '&' instead of logical '&&'
Make two instances of the same change. Change bitwise AND (&) to logical
AND (&&).
Currently the code uses a bitwise AND between two boolean values.
In the first instance;
The first operand is a flag that has been bitwise combined with a bit
mask to get a boolean value as to whether a file has group write
permissions set.
The second operand used is a struct member that is intended as a
boolean flag not a bit mask.
In the second instance the argument is the same except with world write
permissions instead of group write (S_IWOTH, S_IWGRP).
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Chris Dunlop <chris@onthe.net.au> Signed-off-by: Tobin C. Harding <me@tobin.cc>
Closes #6684
Closes #6722
Tobin Harding [Fri, 6 Oct 2017 02:33:44 +0000 (13:33 +1100)]
Remove unnecessary equality check
Currently `if` statement includes an assignment (from a function return
value) and a equality check. The parenthesis are in the incorrect place,
currently the code clobbers the function return value because of this.
We can fix this by simplifying the `if` statement.
`if (foo != 0)`
can be more succinctly expressed as
`if (foo)`
Remove the equality check, add parenthesis to correct the statement.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Chris Dunlop <chris@onthe.net.au> Signed-off-by: Tobin C. Harding <me@tobin.cc>
Closes #6685
Close #6719
Isaac Huang [Fri, 6 Oct 2017 02:30:02 +0000 (20:30 -0600)]
Use linear abd in vdev_copy_uberblocks()
The vdev_copy_uberblocks() function should use abd_alloc_linear() to
allocate ub_abd, because abd_to_buf(ub_abd)) is used later.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Isaac Huang <he.huang@intel.com>
Closes #6718
Closes #6713
The avl_update_* functions are never used by ZFS and are therefore
being removed. They're barely even used in Illumos. Additionally,
simplify avl_add() by using a VERIFY which produces exactly the same
behavior under Linux.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6716
Ned Bass [Mon, 2 Oct 2017 22:36:04 +0000 (15:36 -0700)]
receive_freeobjects() skips freeing some objects
When receiving a FREEOBJECTS record, receive_freeobjects()
incorrectly skips a freed object in some cases. Specifically, this
happens when the first object in the range to be freed doesn't exist,
but the second object does. This leaves an object allocated on disk
on the receiving side which is unallocated on the sending side, which
may cause receiving subsequent incremental streams to fail.
The bug was caused by an incorrect increment of the object index
variable when current object being freed doesn't exist. The
increment is incorrect because incrementing the object index is
handled by a call to dmu_object_next() in the increment portion of
the for loop statement.
Add test case that exposes this bug.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ned Bass <bass6@llnl.gov>
Closes #6694
Closes #6695
Commit d3c2ae1 introduced a dbuf cache with a default size of the
minimum of 100M or 1/32 maximum ARC size. (These figures may be adjusted
using dbuf_cache_max_bytes and dbuf_cache_max_shift.) The dbuf cache
is counted as metadata for the purposes of ARC size calculations.
On a 1GB box the ARC maximum size defaults to c_max 493M which gives a
dbuf cache default minimum size of 15.4M, and the ARC metadata defaults
to minimum 16M. I.e. the dbuf cache is an significant proportion of the
minimum metadata size. With other overheads involved this actually means
the ARC metadata doesn't get down to the minimum.
This patch dynamically scales the dbuf cache to the target ARC size
instead of statically scaling it to the maximum ARC size. (The scale is
still set by dbuf_cache_max_shift and the maximum size is still fixed by
dbuf_cache_max_bytes.) Using the target ARC size rather than the current
ARC size is done to help the ARC reach the target rather than simply
focusing on the current size.
Reviewed-by: Chunwei Chen <tuxoko@gmail.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Melikov <mail@gmelikov.ru> Signed-off-by: Chris Dunlop <chris@onthe.net.au>
Issue #6506
Closes #6561
* zfs_diff_changes: verify type of changes diplayed (-, +, R and M)
* zfs_diff_cliargs: verify command line options and arguments
* zfs_diff_timestamp: verify 'zfs diff -t'
* zfs_diff_types: verify type of objects (files, dirs, pipes...)
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: John Wren Kennedy <john.kennedy@delphix.com> Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #6686
Simon Guest [Wed, 27 Sep 2017 17:39:47 +0000 (06:39 +1300)]
vdev_id: extension for new scsi topology
On systems with SCSI rather than SAS disk topology, this change enables
the vdev_id script to match against the block device path, and therefore
create a vdev alias in /dev/disk/by-vdev.
Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Simon Guest <simon.guest@tesujimath.org>
Closes #6592
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Prakash Surya <prakash.surya@delphix.com>
Closes #6675
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: DHE <git@dehacked.net>
Closes #6672
Olaf Faaland [Sat, 23 Sep 2017 16:28:18 +0000 (09:28 -0700)]
Fix ZTS MMP tests and ztest -M behavior
Quote "$MMP_IMPORT_MSG" when it is passed as an argument, as it is a
multi-word string. Some tests were passing when they should not have,
because the grep was only testing for the first word.
Correct the message expected when no hostid is set and the test attempts
to enable multihost. It did not match the actual output in that
situation.
Disable ztest_reguid() when ztest is invoked with the -M option. If
ztest performs a reguid, a concurrent import attempt may fail with the
error "one or more devices is currently unavailable" if the guid sum is
calculated on the original device guids but compared against the guid
sum ztest wrote based on the new device guids.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Closes #6666
Brian Behlendorf [Sat, 23 Sep 2017 01:54:34 +0000 (18:54 -0700)]
Update codecov.yml
Update the codecov.yml to make the following functional changes.
* Do not require the CI testing to pass before posting results.
* Set red-yellow-green coverage percent from 50%-100%
* Allow a 1% drop in coverage to still be considered a pass.
* Reduce the size of the comment posted to the issue.
Additionally, the top level README.markdown has been updated
to include the codecov.io badge and the project summary reworded.
Reviewed-by: Prakash Surya <prakash.surya@delphix.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6669
This change adds support for a new option that can be passed to the
configure script: "--enable-code-coverage". Further, the "--enable-gcov"
option has been removed, as this new option provides the same
functionality (plus more).
When using this new option the following make targets are available:
Olaf Faaland [Fri, 22 Sep 2017 21:29:26 +0000 (14:29 -0700)]
Reimplement vdev_random_leaf and rename it
Rename it as mmp_random_leaf() since it is defined in mmp.c.
The earlier implementation could end up spinning forever if a pool had a
vdev marked writeable, none of whose children were writeable. It also
did not guarantee that if a writeable leaf vdev existed, it would be
found.
Reimplement to recursively walk the device tree to select the leaf. It
searches the entire tree, so that a return value of (NULL) indicates
there were no usable leaves in the pool; all were either not writeable
or had pending mmp writes.
It still chooses the starting child randomly at each level of the tree,
so if the pool's devices are healthy, the mmp writes go to random leaves
with an even distribution. This was verified by testing using
zfs_multihost_history enabled.
Reviewed by: Thomas Caputi <tcaputi@datto.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Closes #6631
Closes #6665
Don Brady [Thu, 21 Sep 2017 17:17:56 +0000 (11:17 -0600)]
Cleanup zloop working directory after each pass
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed by: John Kennedy <jwk404@gmail.com> Reviewed-by: Olaf Faaland <faaland1@llnl.gov> Signed-off-by: Don Brady <don.brady@delphix.com>
Issue #6595
Closes #6663
Brian Behlendorf [Wed, 20 Sep 2017 16:36:17 +0000 (09:36 -0700)]
Increase default arc_c_min
Increase the default arc_c_min value to which whichever is larger,
either 32M or 1/32 of total system memory. This is advantageous for
systems with more than 1G of memory where performance issues may
occur when the ARC is allowed to collapse below a minimum size.
At the same time we want to use the bare minimum value which is
still functional so the filesystem can be used in very low memory
environments.
Reviewed-by: Tim Chase <tim@chase2k.com> Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6659
Brian Behlendorf [Wed, 20 Sep 2017 16:30:24 +0000 (09:30 -0700)]
Export symbol dmu_tx_mark_netfree()
This symbol is needed by Lustre for the same reason it was needed
by the ZPL. It should have been exported when the original patch
was merged.
Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Alex Zhuravlev <bzzz@whamcloud.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6660
projects / zfs / log