Add a -K option to the test suite to log each test name to /dev/kmsg
(on Linux), so if there's a kernel warning we'll be able to match
it up to a particular test.
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #13227
As previously noted in #12272 the receive-o-x_props_override.ksh test
reliably fails on FreeBSD. Since we don't expect this test to pass
move the exception from the "maybe" to "known" section. This way we
don't retry the FAILED test when it is not expected to pass.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Ryan Moeller <freqlabs@FreeBSD.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#13167
- Kmemleak `clear` is invoked right before every test case run.
- Kmemleak `scan` is requested right after each test case is finished.
- Kmemleak instrumentation is not used for
setup/cleanup/pretest/posttest/failsafe stages to shorten the test
case execution time.
- Kmemleak periodic scan is disabled (`scan=0`) before the test suite
run to avoid interfering with the on-demand scan results.
- There are unavoidable potential false positives coming from kernel
areas other than OpenZFS module.
- The ZTS with kmemleak enabled duration is increased by ~50%.
Example run
```
Running Time: 07:12:13
Percent passed: 98.3%
unreferenced object 0xffff9da82aea5410 (size 80):
comm "kworker/u32:10", pid 942206, jiffies 4296749716 (age 2615.516s)
hex dump (first 32 bytes):
00 30 30 00 00 00 00 00 ff 8f 30 00 00 00 00 00 .00.......0.....
51 e6 77 05 a8 9d ff ff 00 00 00 00 00 00 00 00 Q.w.............
backtrace:
[<000000005cf1fea2>] alloc_extent_state+0x1d/0xb0 [btrfs]
[<0000000083f78ae5>] set_extent_bit+0x2ff/0x670 [btrfs]
[<00000000de29249e>] lock_extent_bits+0x6b/0xa0 [btrfs]
[<00000000b241f424>] lock_and_cleanup_extent_if_need+0xaf/0x1c0
[btrfs]
[<0000000093ca72b5>] btrfs_buffered_write+0x297/0x7d0 [btrfs]
[<000000002c2938c8>] btrfs_file_write_iter+0x127/0x390 [btrfs]
[<00000000b888f720>] do_iter_readv_writev+0x152/0x1b0
[<00000000320f0bcc>] do_iter_write+0x7c/0x1c0
[<000000000b5a8fe0>] lo_write_bvec+0x62/0x150 [loop]
[<000000009aa03c73>] loop_process_work+0x250/0xbd0 [loop]
[<00000000c7487d8a>] process_one_work+0x1f1/0x390
[<000000000b236831>] worker_thread+0x53/0x3e0
[<0000000023cb3e57>] kthread+0x127/0x150
[<000000002d48676a>] ret_from_fork+0x22/0x30
```
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: szubersk <szuberskidamian@gmail.com>
Closes#13084
As explained by the disclaimer in the test case,
"This test can fail since nothing guarantees that old
MOS blocks aren't overwritten."
This behavior is expected and correct, but results in a
flaky test case which is problematic for the CI. The best
we can do to resolve this is to retry the sub-test which
failed when the MOS blocks have clearly been overwritten.
When testing failures were rare enough that a single retry
should normally be sufficient. However, we allow up to
five for good measure.
Reviewed by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#13119
When attaching a vdev to a mirror wait for the resilver to complete
before invoking `zdb` to inspect the pool. This ensures the pool is
essentially idle which allows `zdb` to open the imported pool reliably.
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#13112Closes#6935
The dRAID section of the zpool_expand_001_pos test would reliably fail
because the calculated expansion size assumed the dRAID top-level vdev
was created with a distributed spare. Create the vdev as expected to
resolve the test failure.
This test case flaw was accidentally caused by changing the default
number of dRAID distributed spares from one to zero while dRAID was
being developed.
Additionally, remove zpool_expand_005_pos from the list of possible
faulty tests. It appears to be passing consistently in my testing.
Reviewed by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#13091
The on-disk cost of creating a snapshot or bookmark is sufficiently low
that it is difficult to make it reliably fail even when the pool is
"full". In order to avoid false positives remove these two checks from
the test case.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#13060
CLOCK_MONOTONIC_RAW is only a thing on Linux and macOS. I'm not
actually sure why the previous hardcoding of a constant didn't
error out, but when we removed it, it sure does now.
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Co-authored-by: Rich Ercolani <rincebrain@gmail.com>
Signed-off-by: Rich Ercolani <rincebrain@gmail.com>
Closes#12995
Deprecation of Python versions below 3.6 gives opportunity to unify the
build and install requirements for OpenZFS packages. The minimal
supported Python version is 3.6 as this is the most recent Python
package CentOS/RHEL 7 users can get.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Rich Ercolani <rincebrain@gmail.com>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: szubersk <szuberskidamian@gmail.com>
Closes#12925
Under Linux when rolling back a mounted filesystem negative dentries
may not be dropped from the cache. This can result in an ENOENT
being incorrectly returned on first access. Issuing a `df` before
the unmount results in the negative dentries being invalidated and
side steps the issue.
This is solely a workaround for the test case on Linux and not
correct behavior. The core issue of invalidating negative dentries
needs to be handled with a kernel side change. This is being
tracked as issue #6143.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#12898
Issue #6143
The rerefreserv_raidz test was failing on Linux because the sync being
issued doesn't guarantee a pool sync. Switch to using the sync_pool
function and remove the ZTS exception for Linux.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#12897
The rsend_007_pos test reliably fails on Linux in the cleanup
function. This is caused by an unmount error when attempting to
recursively destroy the newly received datasets. Invoking `df`
prior to the `zfs destroy` interestingly avoids the unmont error.
Why this should matter is unclear and should be investigated.
However, this minor tweak may allow us to remove the ZTS rsend
exceptions. The subsequent rsend_010_pos and rsend_011_pos
failures were a result of this initial failure. The other
"maybe" failures I was unable to reproduce and have not been
recently observed in the master branch.
Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#5665Closes#6086Closes#6087Closes#6446Closes#12876
The alloc_class_* tests may fail on Linux with an EBUSY error if
`zfs destroy` is run before the `dd` process has had a chance to
terminate. Wait on the pid after the `kill -9` to make sure.
When testing I didn't observe any failures for the alloc_class
tests. Remove them from the exceptions list, the CI was used to
verify the tests pass on all platforms.
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Rich Ercolani <rincebrain@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#12873
The import_rewind_device_replaced.ksh test was never entirely reliable
because it depends on MOS data not being overwritten. The MOS data is
not protected by the snapshot so occasional failures were always
expected. However, this test is now failing reliably on all platforms
indicating something has changed in the code since the test was marked
"maybe". Convert the test to a "known" failure until the root cause
is identified and resolved.
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#12821
Due to a possible lock inversion the zvol open call path on Linux
needs to be able to retry in the case where the spa_namespace_lock
cannot be acquired.
For Linux 5.12 an older kernel this was accomplished by returning
-ERESTARTSYS from zvol_open() to request that blkdev_get() drop
the bdev->bd_mutex lock, reaquire it, then call the open callback
again. However, as of the 5.13 kernel this behavior was removed.
Therefore, for 5.12 and older kernels we preserved the existing
retry logic, but for 5.13 and newer kernels we retry internally in
zvol_open(). This should always succeed except in the case where
a pool's vdev are layed on zvols, in which case it may fail. To
handle this case vdev_disk_open() has been updated to retry when
opening a device when -ERESTARTSYS is returned.
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #12301Closes#12759
This was a project proposed as part of the Quality theme for the
hackthon for the 2021 OpenZFS Developer Summit. The idea is to improve
the usability of the automated tests that get run when a PR is created
by having failing tests automatically rerun in order to make flaky
tests less impactful.
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Closes#12740
This test case may fail on 5.13 and newer Linux kernels if the
/dev/zvol/ device is not created by udev.
Reviewed-by: Rich Ercolani <rincebrain@gmail.com>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #12301
Closes #12738
It keeps failing, on changes which aren't related at all.
So until someone runs down why, I'd like it to stop being the
sole reason for CI failures.
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Rich Ercolani <rincebrain@gmail.com>
Closes#12733
Add the following test failures to the exception list for FreeBSD
to ensure we notice new unexpected failures.
pool_checkpoint/checkpoint_big_rewind
pool_checkpoint/checkpoint_indirect
And the following for Linux.
zvol/zvol_misc/zvol_misc_snapdev
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #12621
Issue #12622
Issue #12623Closes#12624
The zvol_misc tests, in particular zvol_misc_volmode, make use of a
common udev_wait function to wait for zvol devices in /dev to quiesce
on Linux. On other platforms this function currently only sleeps for
one second before returning. This is insufficient, and
zvol_misc_volmode has been flaky on FreeBSD as a result.
Replace udev_wait with block_device_wait, passing through the optional
device parameter where possible. Rearrange a few checks to strengthen
the verifications we are making and avoid unnecessarily sleeping. We
must keep udev_wait in a couple places to pass in Github CI workflows.
Remove zvol_misc_volmode from the maybe failing tests on FreeBSD in
zts-report.py.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes#12583
Issue #11854 has been resolved, so we can remove the exceptions for it.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes#12527
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Ka Ho Ng <khng@FreeBSD.org>
Sponsored-by: The FreeBSD Foundation
Closes#12458
Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com>
Reviewed-by: Allan Jude <allan@klarasystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes#12432
In l2arc_add_vdev() first decide whether the device is eligible for
L2ARC rebuild or whole device trim and then add it to the list of cache
devices. Otherwise l2arc_feed_thread() might already start writing on
the device invalidating previous content as l2ad_hand = l2ad_start.
However l2arc_rebuild_vdev() needs the device present in the cache
device list to figure out its l2arc_dev_t. Fix this by moving most of
l2arc_rebuild_vdev() in a new function l2arc_rebuild_dev() which does
not need to search in the cache device list.
In contrast to l2arc_add_vdev() we do not have to worry about
l2arc_feed_thread() invalidating previous content when onlining a
cache device. The device parameters (l2ad*) are not cleared when
offlining the device and writing new buffers will not invalidate
all previous content. In worst case only buffers that have not had
their log block written to the device will be lost.
Retire persist_l2arc_00{4,5,8} tests since they cover code already
covered by the remaining ones. Test persist_l2arc_006 is renamed to
persist_l2arc_004 and persist_l2arc_007 is renamed to persist_l2arc_005.
Fix a typo in persist_l2arc_004, and remove an assertion that is not
always true from l2arc_arcstats_pos. Also update an assertion in
persist_l2arc_005 and explain why in a comment.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: George Amanakis <gamanakis@gmail.com>
Closes#12365
This enables ZED to auto-online vdevs that are not wholedisk managed by
ZFS.
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Don Brady <don.brady@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
The receive-o-x_props_override test case reliably fails on the
FreeBSD main builders (but not on Linux), until the root cause is
understood add this test to the FreeBSD exception list.
On Linux the alloc_class_012_pos test case may occasionally fail.
This is a known false positive which has also been added to the
Linux exception list until the test can be made entirely reliable.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#12272
The following seven tests been observed to occasionally fail during
CI testing. This commit adds them to the list of known somewhat
flaky test cases.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#12023
Both the zpool_initialize_import_export and checkpoint_discard_busy
test cases a known to occasionally fail. Add them to the list of
known possible failures and reference the appropriate issue on the
tracker.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#11949
It's been observed in the CI that the required 25% of obsolete bytes
in the mapping can be to high a threshold for this test resulting in
condensing never being triggered and a test failure. To prevent these
failures make the existing zfs_condense_indirect_obsolete_pct tuning
available so the obsolete percentage can be reduced from 25% to 5%
during this test.
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#11869
The fault/auto_spare_shared, l2arc/persist_l2arc_007_pos, and
alloc_class/alloc_class_013_pos test cases are not entirely reliable
and may occasionally fail resulting in a false positive in the CI.
Add these tests to known list of possible failures until they can
be made 100% reliable.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#11890
Kill the removal operation on every platform, not just Linux.
The test has been fixed and is now stable on FreeBSD.
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Igor Kozhukhov <igor@dilos.org>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes#11856
As described in #11854, zhack is occasionally segfaulting on FreeBSD.
Debugging this is proving to be tricky. To avoid false positives in
the CI add entries for the tests that use zhack in zts-report to
accept that they may occasionally fail on FreeBSD.
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Issue #11854Closes#11855
Add inheritance/inherit_001_pos to the maybe fails on FreeBSD list.
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes#11830
Provide a basic test coverage for io_uring I/O.
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Closes#11497
The space in special devices is not included in spa_dspace (or
dsl_pool_adjustedsize(), or the zfs `available` property). Therefore
there is always at least as much free space in the normal class, as
there is allocated in the special class(es). And therefore, there is
always enough free space to remove a special device.
However, the checks for free space when removing special devices did not
take this into account. This commit corrects that.
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Don Brady <don.brady@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes#11329
This patch adds a new top-level vdev type called dRAID, which stands
for Distributed parity RAID. This pool configuration allows all dRAID
vdevs to participate when rebuilding to a distributed hot spare device.
This can substantially reduce the total time required to restore full
parity to pool with a failed device.
A dRAID pool can be created using the new top-level `draid` type.
Like `raidz`, the desired redundancy is specified after the type:
`draid[1,2,3]`. No additional information is required to create the
pool and reasonable default values will be chosen based on the number
of child vdevs in the dRAID vdev.
zpool create <pool> draid[1,2,3] <vdevs...>
Unlike raidz, additional optional dRAID configuration values can be
provided as part of the draid type as colon separated values. This
allows administrators to fully specify a layout for either performance
or capacity reasons. The supported options include:
zpool create <pool> \
draid[<parity>][:<data>d][:<children>c][:<spares>s] \
<vdevs...>
- draid[parity] - Parity level (default 1)
- draid[:<data>d] - Data devices per group (default 8)
- draid[:<children>c] - Expected number of child vdevs
- draid[:<spares>s] - Distributed hot spares (default 0)
Abbreviated example `zpool status` output for a 68 disk dRAID pool
with two distributed spares using special allocation classes.
```
pool: tank
state: ONLINE
config:
NAME STATE READ WRITE CKSUM
slag7 ONLINE 0 0 0
draid2:8d:68c:2s-0 ONLINE 0 0 0
L0 ONLINE 0 0 0
L1 ONLINE 0 0 0
...
U25 ONLINE 0 0 0
U26 ONLINE 0 0 0
spare-53 ONLINE 0 0 0
U27 ONLINE 0 0 0
draid2-0-0 ONLINE 0 0 0
U28 ONLINE 0 0 0
U29 ONLINE 0 0 0
...
U42 ONLINE 0 0 0
U43 ONLINE 0 0 0
special
mirror-1 ONLINE 0 0 0
L5 ONLINE 0 0 0
U5 ONLINE 0 0 0
mirror-2 ONLINE 0 0 0
L6 ONLINE 0 0 0
U6 ONLINE 0 0 0
spares
draid2-0-0 INUSE currently in use
draid2-0-1 AVAIL
```
When adding test coverage for the new dRAID vdev type the following
options were added to the ztest command. These options are leverages
by zloop.sh to test a wide range of dRAID configurations.
-K draid|raidz|random - kind of RAID to test
-D <value> - dRAID data drives per group
-S <value> - dRAID distributed hot spares
-R <value> - RAID parity (raidz or dRAID)
The zpool_create, zpool_import, redundancy, replacement and fault
test groups have all been updated provide test coverage for the
dRAID feature.
Co-authored-by: Isaac Huang <he.huang@intel.com>
Co-authored-by: Mark Maybee <mmaybee@cray.com>
Co-authored-by: Don Brady <don.brady@delphix.com>
Co-authored-by: Matthew Ahrens <mahrens@delphix.com>
Co-authored-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Mark Maybee <mmaybee@cray.com>
Reviewed-by: Matt Ahrens <matt@delphix.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#10102
The mmp_exported_import and mmp_inactive_import tests depend on
ztest simulating an active pool. If ztest unexpectedly terminates
due to an unrelated issue the test case will fail. Since ztest is
not yet 100% reliable I've added these tests to the maybe exception
list. They can be removed when the issues with ztest are resolved
or if the test cases are updated to handle these unexpected failures.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#10726
Stock kernels older than 4.10 do not export the has_capability()
function which is required by commit e59a377. To avoid breaking
the build on older kernels revert to the safe legacy behavior and
return EACCES when privileges cannot be checked.
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Matt Ahrens <matt@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#10565Closes#10573
The following test cases have been observed to fail frequently
enough to be a problem when reporting CI results. Until they can
be updated to be entirely reliable add them to the zts-report.py
script.
alloc_class/alloc_class_011_neg
cli_root/zpool_import/zpool_import_012_pos
mmp/mmp_on_uberblocks
rsend/send_partial_dataset
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#10578
A bunch of places need to edit files to incorporate the configured paths
i.e. bindir, sbindir etc. Move this logic into a common file.
Create arc_summary by copying arc_summary[23] as appropriate at build
time instead of install time.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Closes#10559
== Motivation and Context
The current implementation of 'sharenfs' and 'sharesmb' relies on
the use of the sharetab file. The use of this file is os-specific
and not required by linux or freebsd. Currently the code must
maintain updates to this file which adds complexity and presents
a significant performance impact when sharing many datasets. In
addition, concurrently running 'zfs sharenfs' command results in
missing entries in the sharetab file leading to unexpected failures.
== Description
This change removes the sharetab logic from the linux and freebsd
implementation of 'sharenfs' and 'sharesmb'. It still preserves an
os-specific library which contains the logic required for sharing
NFS or SMB. The following entry points exist in the vastly simplified
libshare library:
- sa_enable_share -- shares a dataset but may not commit the change
- sa_disable_share -- unshares a dataset but may not commit the change
- sa_is_shared -- determine if a dataset is shared
- sa_commit_share -- notify NFS/SMB subsystem to commit the shares
- sa_validate_shareopts -- determine if sharing options are valid
The sa_commit_share entry point is provided as a performance enhancement
and is not required. The sa_enable_share/sa_disable_share may commit
the share as part of the implementation. Libshare provides a framework
for both NFS and SMB but some operating systems may not fully support
these protocols or all features of the protocol.
NFS Operation:
For linux, libshare updates /etc/exports.d/zfs.exports to add
and remove shares and then commits the changes by invoking
'exportfs -r'. This file, is automatically read by the kernel NFS
implementation which makes for better integration with the NFS systemd
service. For FreeBSD, libshare updates /etc/zfs/exports to add and
remove shares and then commits the changes by sending a SIGHUP to
mountd.
SMB Operation:
For linux, libshare adds and removes files in /var/lib/samba/usershares
by calling the 'net' command directly. There is no need to commit the
changes. FreeBSD does not support SMB.
== Performance Results
To test sharing performance we created a pool with an increasing number
of datasets and invoked various zfs actions that would enable and
disable sharing. The performance testing was limited to NFS sharing.
The following tests were performed on an 8 vCPU system with 128GB and
a pool comprised of 4 50GB SSDs:
Scale testing:
- Share all filesystems in parallel -- zfs sharenfs=on <dataset> &
- Unshare all filesystems in parallel -- zfs sharenfs=off <dataset> &
Functional testing:
- share each filesystem serially -- zfs share -a
- unshare each filesystem serially -- zfs unshare -a
- reset sharenfs property and unshare -- zfs inherit -r sharenfs <pool>
For 'zfs sharenfs=on' scale testing we saw an average reduction in time
of 89.43% and for 'zfs sharenfs=off' we saw an average reduction in time
of 83.36%.
Functional testing also shows a huge improvement:
- zfs share -- 97.97% reduction in time
- zfs unshare -- 96.47% reduction in time
- zfs inhert -r sharenfs -- 99.01% reduction in time
Reviewed-by: Matt Ahrens <matt@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Bryant G. Ly <bryangly@gmail.com>
Signed-off-by: George Wilson <gwilson@delphix.com>
External-Issue: DLPX-68690
Closes#1603Closes#7692Closes#7943Closes#10300
The filesystem_limit and snapshot_limit properties limit the number of
filesystems or snapshots that can be created below this dataset.
According to the manpage, "The limit is not enforced if the user is
allowed to change the limit." Two types of users are allowed to change
the limit:
1. Those that have been delegated the `filesystem_limit` or
`snapshot_limit` permission, e.g. with
`zfs allow USER filesystem_limit DATASET`. This works properly.
2. A user with elevated system privileges (e.g. root). This does not
work - the root user will incorrectly get an error when trying to create
a snapshot/filesystem, if it exceeds the `_limit` property.
The problem is that `priv_policy_ns()` does not work if the `cred_t` is
not that of the current process. This happens when
`dsl_enforce_ds_ss_limits()` is called in syncing context (as part of a
sync task's check func) to determine the permissions of the
corresponding user process.
This commit fixes the issue by passing the `task_struct` (typedef'ed as
a `proc_t`) to syncing context, and then using `has_capability()` to
determine if that process is privileged. Note that we still need to
pass the `cred_t` to syncing context so that we can check if the user
was delegated this permission with `zfs allow`.
This problem only impacts Linux. Wrappers are added to FreeBSD but it
continues to use `priv_check_cred()`, which works on arbitrary `cred_t`.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes#8226Closes#10545
Implements a pam module for automatically loading zfs encryption keys
for home datasets. The pam module:
- loads a zfs key and mounts the dataset when a session opens.
- unmounts the dataset and unloads the key when the session closes.
- when the user is logged on and changes the password, the module
changes the encryption key.
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: @jengelh <jengelh@inai.de>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Felix Dörre <felix@dogcraft.de>
Closes#9886Closes#9903
The test added in commit
4313a5b4c5 ("Detect if sed supports --in-place")
doesn't work at least on my system (autoconfig-2.69).
The issue is that SED has already been found and cached before this
function is evaluated, with the result that the test is completely
skipped.
...
checking for a sed that does not truncate output... /usr/bin/sed
...
checking for sed --in-place... (cached) /usr/bin/sed
The first test is executed by libtool.m4. This looks to have been around
in libtool for at least 15 years or so, not sure why this was not
encountered at the time of the original commit.
Fix this by caching the value of the ac_inplace flag rather than the
path to SED. Also use $SED and add AC_REQUIRE to ensure that we use the
sed that was located by the standard configure test.
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Closes#10493
The following test cases may still occasionally fail and are being
added to the "maybe" list for Linux until they can be updated to be
entirely reliable.
cli_root/zfs_rename/zfs_rename_002_pos.ksh
cli_root/zpool_reopen/zpool_reopen_003_pos.ksh
refreserv/refreserv_raidz
These 6 tests consistently fail only on Fedora 31+, the failures
are related to the kernel rescanning the partition table on loopback
devices which is no longer reliable unless partprobe is used. In
order to enable the Fedora bot by default they are also being added
to the list until the tests can be updated. Any significant regression
in functionality covered by these tests will still be detected by the
FreeBSD builders.
alloc_class/alloc_class_009_pos
alloc_class/alloc_class_010_pos
cli_root/zpool_expand/zpool_expand_001_pos
cli_root/zpool_expand/zpool_expand_005_pos
rsend/rsend_007_pos
rsend/rsend_010_pos
rsend/rsend_011_pos
snapshot/rollback_003_pos
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#10489
Update the zts-report.py script to conform to the flake8 E741 rule.
"Variables named I, O, and l can be very hard to read. This is
because the letter I and the letter l are easily confused, and
the letter O and the number 0 can be easily confused."
- https://www.flake8rules.com/rules/E741.html
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#10323
