Commit Graph

5362 Commits

Author SHA1 Message Date
Andrea Gelmini
c953960048 Fix typos in tests/
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Closes #9248
2019-08-30 16:53:48 -07:00
Andrea Gelmini
b520706f29 Fix typos in tests/
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Closes #9245
2019-08-30 16:52:00 -07:00
Andrea Gelmini
9f5c1bc609 Fix typos in module/
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Closes #9241
2019-08-30 14:32:18 -07:00
Andrea Gelmini
9d40bdf414 Fix typos in modules/icp/
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Closes #9239
2019-08-30 14:26:07 -07:00
Andrea Gelmini
cf7c5a030e Fix typos in include/
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Closes #9238
2019-08-30 09:53:15 -07:00
Andrea Gelmini
0463c95501 Fix typos in etc/
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Closes #9236
2019-08-30 09:46:52 -07:00
Andrea Gelmini
cd6b910b64 Fix typos in contrib/
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Closes #9235
2019-08-30 09:44:43 -07:00
Andrea Gelmini
ad0b23b14a Fix typos in cmd/
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Closes #9234
2019-08-30 09:43:30 -07:00
Andrea Gelmini
ac3d4d0cf6 Fix typos in man/
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Closes #9233
2019-08-30 09:41:35 -07:00
Andrea Gelmini
2b96f77423 Fix typos in config/
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Closes #9232
2019-08-30 09:40:30 -07:00
Igor K
d39c71d365 Fix refquota_007_neg.ksh
Must use 'zfs' instead of '$ZFS' which is undefined.

Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Igor Kozhukhov <igor@dilos.org>
Closes #9257
2019-08-30 09:32:25 -07:00
Paul Dagnelie
475aa97cab Prevent metaslab_sync panic due to spa_final_dirty_txg
If a pool enables the SPACEMAP_HISTOGRAM feature shortly before being
exported, we can enter a situation that causes a kernel panic. Any metaslabs
that are loaded during the final dirty txg and haven't already been condensed
will cause metaslab_sync to proceed after the final dirty txg so that the
condense can be performed, which there are assertions to prevent. Because of
the nature of this issue, there are a number of ways we can enter this
state. Rather than try to prevent each of them one by one, potentially missing
some edge cases, we instead cut it off at the point of intersection; by
preventing metaslab_sync from proceeding if it would only do so to perform a
condense and we're past the final dirty txg, we preserve the utility of the
existing asserts while preventing this particular issue.

Reviewed-by: Matt Ahrens <matt@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Closes #9185
Closes #9186
Closes #9231
Closes #9253
2019-08-30 09:28:31 -07:00
Georgy Yakovlev
e2fcfa70e3 etc/init.d/zfs-functions.in: remove arch warning
Remove the x86_64 warning, it's no longer the case that this is the
only supported architecture.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Georgy Yakovlev <gyakovlev@gentoo.org>
Closes: #9177
2019-08-29 13:14:48 -07:00
Ryan Moeller
815a645692 Simplify deleting partitions in libtest
Eliminate unnecessary code duplication. We can use a for-loop instead
of a while-loop. There is no need to echo $DISKSARRAY in a subshell or
return 0. Declare all variables with typeset.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes #9224
2019-08-29 13:11:29 -07:00
Ryan Moeller
f66ad580cc Use compatible arg order in tests
BSD getopt() and getopt_long() want options before arguments.
Reorder arguments to zfs/zpool in tests to put all the options first.

Reviewed-by: Igor Kozhukhov <igor@dilos.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes #9228
2019-08-29 11:03:09 -07:00
Paul Dagnelie
eef0f4d84e Keep more metaslabs loaded
With the other metaslab changes loaded onto a system, we can 
significantly reduce the memory usage of each loaded metaslab and 
unload them on demand if there is memory pressure. However, none 
of those changes actually result in us keeping more metaslabs loaded. 
If we don't keep more metaslabs loaded, we will still have to wait 
for demand-loading to finish when no loaded metaslab can satisfy our 
allocation, which can cause ZIL performance issues. In addition,
performance is traditionally measured by IOs per unit time, while 
unloading is currently done on a txg-count basis. Txgs can take a 
widely varying range of times, from tenths of a second to several 
seconds. This can result in confusing, hard to predict behavior.

This change simply adds a time-based component to metaslab unloading. 
A metaslab will remain loaded for one minute and 8 txgs (by default) 
after it was last used, unless it is evicted due to memory pressure.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matt Ahrens <mahrens@delphix.com>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
External-issue: DLPX-65016
External-issue: DLPX-65047
Closes #9197
2019-08-29 10:20:36 -07:00
Pavel Zakharov
e6cebbf86e zfs_handle used after being closed/freed in change_one callback
This is a typical case of use after free. We would call zfs_close(zhp) 
which would free the handle, and then call zfs_iter_children() on that 
handle later.  This change ensures that the zfs_handle is only closed 
when we are ready to return.

Running `zfs inherit -r sharenfs pool` was failing with an error
code without any error messages. After some debugging I've pinpointed 
the issue to be memory corruption, which would cause zfs to try to 
issue an ioctl to the wrong device and receive ENOTTY.

Reviewed-by: Paul Dagnelie <pcd@delphix.com>
Reviewed-by: George Wilson <gwilson@delphix.com>
Reviewed-by: Sebastien Roy <sebastien.roy@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alek Pinchuk <apinchuk@datto.com>
Signed-off-by: Pavel Zakharov <pavel.zakharov@delphix.com>
Issue #7967 
Closes #9165
2019-08-28 15:02:58 -07:00
Tony Nguyen
8d04284281 Use smaller default slack/delta value for schedule_hrtimeout_range()
For interrupt coalescing, cv_timedwait_hires() uses a 100us slack/delta
for calls to schedule_hrtimeout_range(). This 100us slack can be costly
for small writes.

This change improves small write performance by passing resolution `res`
parameter to schedule_hrtimeout_range() to be used as delta/slack. A new
tunable `spl_schedule_hrtimeout_slack_us` is added to preserve old
behavior when desired.

Performance observations on 8K recordsize filesystem:
- 8K random writes at 1-64 threads, up to 60% improvement for one thread
  and smaller gains as thread count increases. At >64 threads, 2-5%
  decrease in performance was observed.
- 8K sequential writes, similar 60% improvement for one thread and
  leveling out around 64 threads. At >64 threads, 5-10% decrease in
  performance was observed.
- 128K sequential write sees 1-5 for the 128K. No observed regression at
  high thread count.

Testing done on Ubuntu 18.04 with 4.15 kernel, 8vCPUs and SSD storage on
VMware ESX.

Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matt Ahrens <mahrens@delphix.com>
Signed-off-by: Tony Nguyen <tony.nguyen@delphix.com>
Closes #9217
2019-08-28 14:56:54 -07:00
Brian Behlendorf
07a328dde4
ZTS: Temporarily disable several upgrade tests
Until issues #9185 and #9186 have been resolved the following zpool
upgrade tests are being disabled to prevent CI failures.

  zpool_upgrade_002_pos,
  zpool_upgrade_003_pos,
  zpool_upgrade_004_pos,
  zpool_upgrade_007_pos,
  zpool_upgrade_008_pos

Reviewed-by: Paul Dagnelie <pcd@delphix.com>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #9185
Issue #9186
Closes #9225
2019-08-28 14:52:08 -07:00
Don Brady
28c91ab66d Tag ABD pages for exclusion in kernel crash dumps
Tag the ABD data pages so that they can be identified for exclusion 
from kernel crash dumps. Eliminating the zfs file data allows for 
significantly smaller crash dump files. Note that ZFS in illumos has 
always excluded the zfs data pages from a kernel crash dump.

This change tags ARC scatter data pages so they can be identified from 
the makedumpfile(8) command. That command is used to create smaller 
dump files by ignoring some memory regions and using compression. It 
already filters file data from the VFS page cache and will now be able 
to exclude ZFS file data pages from the dump file.

A corresponding change to makeumpfile(8) is required to identify ZFS 
data pages.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Paul Dagnelie <pcd@delphix.com>
Signed-off-by: Don Brady <don.brady@delphix.com>
Closes #8899
2019-08-28 10:44:46 -07:00
Chunwei Chen
035e96118b Fix zil replay panic when TX_REMOVE followed by TX_CREATE
If TX_REMOVE is followed by TX_CREATE on the same object id, we need to
make sure the object removal is completely finished before creation. The
current implementation relies on dnode_hold_impl with
DNODE_MUST_BE_ALLOCATED returning ENOENT. While this check seems to work
fine before, in current version it does not guarantee the object removal
is completed.

We fix this by checking if DNODE_MUST_BE_FREE returns successful
instead. Also add test and remove dead code in dnode_hold_impl.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tom Caputi <tcaputi@datto.com>
Signed-off-by: Chunwei Chen <david.chen@nutanix.com>
Closes #7151
Closes #8910
Closes #9123
Closes #9145
2019-08-28 10:42:02 -07:00
Ryan Moeller
9c9dcd6e04 Prefer for (;;) to while (TRUE)
Defining a special constant to make an infinite loop is excessive,
especially when the name clashes with symbols commonly defined on
some platforms (ie FreeBSD).

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: John Kennedy <john.kennedy@delphix.com
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes #9219
2019-08-28 10:38:40 -07:00
Andriy Gapon
e6203d288a zfs_ioc_snapshot: check user-prop permissions on snapshotted datasets
Previously, the permissions were checked on the pool which was obviously
incorrect.

After this change, zfs_check_userprops() only validates the properties
without any permission checks.  The permissions are checked individually
for each snapshotted dataset.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matt Ahrens <mahrens@delphix.com>
Signed-off-by: Andriy Gapon <avg@FreeBSD.org>
Closes #9179 
Closes #9180
2019-08-27 13:45:53 -07:00
Richard Allen
f335b8ffe1 Fix Plymouth passphrase prompt in initramfs script
Entering the ZFS encryption passphrase under Plymouth wasn't working
because in the ZFS initrd script, Plymouth was calling zfs via
"--command", which wasn't passing through the filesystem argument to
zfs load-key properly (it was passing through the single quotes around
the filesystem name intended to handle spaces literally,
which zfs load-key couldn't understand).

Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Garrett Fields <ghfields@gmail.com>
Signed-off-by: Richard Allen <belperite@gmail.com>
Issue #9193
Closes #9202
2019-08-27 13:44:02 -07:00
Tom Caputi
e7a2fa70c3 Fix deadlock in 'zfs rollback'
Currently, the 'zfs rollback' code can end up deadlocked due to
the way the kernel handles unreferenced inodes on a suspended fs.
Essentially, the zfs_resume_fs() code path may cause zfs to spawn
new threads as it reinstantiates the suspended fs's zil. When a
new thread is spawned, the kernel may attempt to free memory for
that thread by freeing some unreferenced inodes. If it happens to
select inodes that are a a part of the suspended fs a deadlock
will occur because freeing inodes requires holding the fs's
z_teardown_inactive_lock which is still held from the suspend.

This patch corrects this issue by adding an additional reference
to all inodes that are still present when a suspend is initiated.
This prevents them from being freed by the kernel for any reason.

Reviewed-by: Alek Pinchuk <apinchuk@datto.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #9203
2019-08-27 09:55:51 -07:00
Ryan Moeller
142f84dd19 Restore :: in Makefile.am
The double-colon looked like a typo, but it's actually an obscure
feature. Rules with :: may appear multiple times and are run
independently of one another in the order they appear. The use of ::
for distclean-local was conventional, not accidental.

Add comments to indicate the intentional use of double-colon rules.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes #9210
2019-08-26 11:48:31 -07:00
Paul Dagnelie
95f0144675 Add regression test for "zpool list -p"
Other than this test, zpool list -p is not well tested by any of the 
automated tests.  Add a test for zpool list -p.

Reviewed-by: Prakash Surya <prakash.surya@delphix.com>
Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Closes #9134
2019-08-25 18:33:03 -07:00
Ryan Moeller
a18f8bce5c Split argument list, satisfy shellcheck SC2086
Split the arguments for ${TEST_RUNNER} across multiple lines for
clarity. Also added quotes in the message to match the invoked command.

Unquoted variables in argument lists are subject to splitting. In this
particular case we can't quote the variable because it is an optional
argument. Use the method suggested in the description linked below,
instead.

The technique is to use an unquoted variable with an alternate value.

https://github.com/koalaman/shellcheck/wiki/SC2086

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Giuseppe Di Natale <guss80@gmail.com>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes #9212
2019-08-25 18:30:39 -07:00
Brian Behlendorf
4302698be1
ZTS: Fix in-tree dbufstats test case
Commit a887d653 updated the dbufstats such that escalated privileges
are required.  Since all tests under cli_user are run with normal
privileges move this test case to a location where it will be run
required privileges.

Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #9118 
Closes #9196
2019-08-22 17:37:48 -07:00
Brian Behlendorf
d1d1f8c37d
Fix install error introduced by #9089 (#9205)
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
2019-08-22 17:31:38 -07:00
Ryan Moeller
97c54ea818 Make slog test setup more robust
The slog tests fail when attempting to create pools using file vdevs
that already exist from previous test runs. Remove these files in the
setup for the test.

Reviewed-by: Igor Kozhukhov <igor@dilos.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes #9194
2019-08-22 17:26:50 -07:00
yshui
19d61d63fa zfs-mount-genrator: dependencies should be space-separated
Reviewed-by: Antonio Russo <antonio.e.russo@gmail.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Closes #9174
2019-08-22 17:11:17 -07:00
Paul Dagnelie
d1484fb189 Fix install error introduced by #9089
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
2019-08-22 12:01:41 -07:00
Brian Behlendorf
31b548ffb9
ZTS: Use decimal values when setting tunables
The mdb_set_uint32 function requires that the values passed in be
decimal.  This was overlooked initially because the matching Linux
function accepts both decimal and hexadecimal values.

Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed by: Sara Hartse <sara.hartse@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Igor Kozhukhov <igor@dilos.org>
Closes #9125
Closes #9195
2019-08-22 10:36:57 -07:00
Brian Behlendorf
a3ba6e589f
Fix automake program name transformations (#9190)
Automake can perform program name transformations at install time.
However, arc_summary has its own name transformation taking place,
which interferes with the automake transforms. The automake transforms
must be taken into account in order to resolve the conflict.

Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
2019-08-22 09:53:45 -07:00
Mauricio Faria de Oliveira
2f74950c5e Document ZFS_DKMS_ENABLE_DEBUGINFO in userland configuration
Document the ZFS_DKMS_ENABLE_DEBUGINFO option in the userland
configuration file, as done with the other ZFS_DKMS_* options.

It has been introduced with commit e45c1734a6 ("dkms: Enable
debuginfo option to be set with zfs sysconfig file") but isn't
mentioned anywhere other than the 'dkms.conf' file (generated).

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Mauricio Faria de Oliveira <mfo@canonical.com>
Closes #9191
2019-08-22 09:48:48 -07:00
Ryan Moeller
0154a1e539 Dedup IOC enum values in libzfs_input_check
Reuse enum value ZFS_IOC_BASE for `('Z' << 8)`.
This is helpful on FreeBSD where ZFS_IOC_BASE has a different value and
`('Z' << 8)` is wrong.

Reviewed-by: Chris Dunlop <chris@onthe.net.au>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes #9188
2019-08-22 09:46:09 -07:00
Ryan Moeller
f591a581d6 Enhance ioctl number checks
When checking ZFS_IOC_* numbers, print which numbers are wrong rather
than silently failing.

Reviewed-by: Chris Dunlop <chris@onthe.net.au>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes #9187
2019-08-22 09:44:11 -07:00
Brian Behlendorf
20f7b917aa
ZTS: Fix vdev_zaps_005_pos on CentOS 6
The ancient version of blkid (v2.17.2) used in CentOS 6 will not
detect the newly created pool unless it has been written to.
Force a pool sync so `zpool import` will detect the newly created
pool.

Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #9199
2019-08-22 08:53:44 -07:00
Tony Hutter
a9ebdfdd43 Linux 5.3: Fix switch() fall though compiler errors
Fix some switch() fall-though compiler errors:

    abd.c:1504:9: error: this statement may fall through

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #9170
2019-08-21 09:29:23 -07:00
Ryan Moeller
f66a1f88fb Minor cleanup in Makefile.am
Split long lines where adding license info to dist archive.

Remove extra colon from target line.

Reviewed-by: Chris Dunlop <chris@onthe.net.au>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes #9189
2019-08-21 09:01:59 -07:00
Alexey Smirnoff
c759b33a51 zfs-functions.in: in_mtab() always returns 1
$fs used with the wrong sed command where should be $mntpnt instead
to match a variable exported by read_mtab()

The fix is mostly to reuse the sed command found in read_mtab()

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Signed-off-by: Alexey Smirnoff <fling@member.fsf.org>
Closes #9168
2019-08-20 16:26:19 -07:00
Ryan Moeller
92a9e1da60
Fix automake program name transformations
Automake can perform program name transformations at install time.
However, arc_summary has its own name transformation taking place,
which interferes with the automake transforms. The automake transforms
must be taken into account in order to resolve the conflict.

Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
2019-08-20 17:46:40 -04:00
Matthew Ahrens
325d288c5d Add fast path for zfs_ioc_space_snaps() handling of empty_bpobj
When there are many snapshots, calls to zfs_ioc_space_snaps() (e.g. from
`zfs destroy -nv pool/fs@snap1%snap10000`) can be very slow, resulting
in poor performance because we are holding the dp_config_rwlock the
entire time, blocking spa_sync() from continuing.  With around ten
thousand snapshots, we've seen up to 500 seconds in this ioctl,
iterating over up to 50,000,000 bpobjs, ~99% of which are the empty
bpobj.

By creating a fast path for zfs_ioc_space_snaps() handling of the
empty_bpobj, we can achieve a ~5x performance improvement of this ioctl
(when there are many snapshots, and the deadlist is mostly
empty_bpobj's).

Reviewed-by: Pavel Zakharov <pavel.zakharov@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Paul Dagnelie <pcd@delphix.com>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
External-issue: DLPX-58348
Closes #8744
2019-08-20 11:34:52 -07:00
jdike
3beb0a7694 Fix lockdep circular locking false positive involving sa_lock
There are two different deadlock scenarios, but they share a common
link, which is
thread 1 holding sa_lock and trying to get zap->zap_rwlock:
    zap_lockdir_impl+0x858/0x16c0 [zfs]
    zap_lockdir+0xd2/0x100 [zfs]
    zap_lookup_norm+0x7f/0x100 [zfs]
    zap_lookup+0x12/0x20 [zfs]
    sa_setup+0x902/0x1380 [zfs]
    zfsvfs_init+0x3d6/0xb20 [zfs]
    zfsvfs_create+0x5dd/0x900 [zfs]
    zfs_domount+0xa3/0xe20 [zfs]

and thread 2 trying to get sa_lock, either in sa_setup:
   sa_setup+0x742/0x1380 [zfs]
   zfsvfs_init+0x3d6/0xb20 [zfs]
   zfsvfs_create+0x5dd/0x900 [zfs]
   zfs_domount+0xa3/0xe20 [zfs]
or in sa_build_index:
   sa_build_index+0x13d/0x790 [zfs]
   sa_handle_get_from_db+0x368/0x500 [zfs]
   zfs_znode_sa_init.isra.0+0x24b/0x330 [zfs]
   zfs_znode_alloc+0x3da/0x1a40 [zfs]
   zfs_zget+0x39a/0x6e0 [zfs]
   zfs_root+0x101/0x160 [zfs]
   zfs_domount+0x91f/0xea0 [zfs]

From there, there are different locking paths back to something
holding zap->zap_rwlock.

The deadlock scenarios involve multiple different ZFS filesystems
being mounted.  sa_lock is common to these scenarios, and the sa
struct involved is private to a mount.  Therefore, these must be
referring to different sa_lock instances and these deadlocks can't
occur in practice.

The fix, from Brian Behlendorf, is to remove sa_lock from lockdep
coverage by initializing it with MUTEX_NOLOCKDEP.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Jeff Dike <jdike@akamai.com>
Closes #9110
2019-08-19 16:04:26 -07:00
Dominic Pearson
ff4b68eedc Linux 5.3 compat: Makefile subdir-m no longer supported
Uses obj-m instead, due to kernel changes.

See LKML: Masahiro Yamada, Tue, 6 Aug 2019 19:03:23 +0900

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Dominic Pearson <dsp@technoanimal.net>
Closes #9169
2019-08-19 15:22:52 -07:00
colmbuckley
f6fbe25664 Set "none" scheduler if available (initramfs)
Existing zfs initramfs script logic will attempt to set the 'noop' 
scheduler if it's available on the vdev block devices. Newer kernels 
have the similar 'none' scheduler on multiqueue devices; this change 
alters the initramfs script logic to also attempt to set this scheduler 
if it's available.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Garrett Fields <ghfields@gmail.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: Colm Buckley <colm@tuatha.org>
Closes #9042
2019-08-19 15:11:46 -07:00
Paul Dagnelie
1a26cb6160 Add more refquota tests
It used to be possible for zfs receive (and other operations related 
to clone swap) to bypass refquotas. This can cause a number of issues, 
and there should be an automated test for it.

Added tests for rollback and receive not overriding refquota.

Reviewed-by: Pavel Zakharov <pavel.zakharov@delphix.com>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Closes #9139
2019-08-19 15:06:53 -07:00
Paul Dagnelie
f09fda5071 Cap metaslab memory usage
On systems with large amounts of storage and high fragmentation, a huge 
amount of space can be used by storing metaslab range trees. Since 
metaslabs are only unloaded during a txg sync, and only if they have 
been inactive for 8 txgs, it is possible to get into a state where all 
of the system's memory is consumed by range trees and metaslabs, and 
txgs cannot sync. While ZFS knows how to evict ARC data when needed, 
it has no such mechanism for range tree data. This can result in boot 
hangs for some system configurations.

First, we add the ability to unload metaslabs outside of syncing 
context. Second, we store a multilist of all loaded metaslabs, sorted 
by their selection txg, so we can quickly identify the oldest 
metaslabs.  We use a multilist to reduce lock contention during heavy 
write workloads. Finally, we add logic that will unload a metaslab 
when we're loading a new metaslab, if we're using more than a certain 
fraction of the available memory on range trees.

Reviewed-by: Matt Ahrens <mahrens@delphix.com>
Reviewed-by: George Wilson <gwilson@delphix.com>
Reviewed-by: Sebastien Roy <sebastien.roy@delphix.com>
Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Closes #9128
2019-08-16 09:08:21 -06:00
Michael Niewöhner
9323aad14d initramfs: fixes for (debian) initramfs
* contrib/initramfs: include /etc/default/zfs and /etc/zfs/zfs-functions
At least debian needs /etc/default/zfs and /etc/zfs/zfs-functions for
its initramfs. Include both in build when initramfs is configured.

* contrib/initramfs: include 60-zvol.rules and zvol_id
Include 60-zvol.rules and zvol_id and set udev as predependency instead
of debians zdev. This makes debians additional zdev hook unneeded.

* Correct initconfdir substitution for some distros
Not every Linux distro is using @sysconfdir@/default but @initconfdir@
which is already determined by configure. Let's use it.

* systemd: prevent possible conflict between systemd and sysvinit
Systemd will not load a sysvinit service if a unit exists with the same
name. This prevents conflicts between sysvinit and systemd.
In ZFS there is one sysvinit service that does not have a systemd
service but a target counterpart, zfs-import.target.
Usually it does not make any sense to install both but it is possisble.
Let's prevent any conflict by masking zfs-import.service by default.
This does not harm even if init.d/zfs-import does not exist.

Reviewed-by: Chris Wedgwood <cw@f00f.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Tested-by: Alex Ingram <reimu@reimuhakurei.net>
Tested-by: Dreamcat4 <dreamcat4@gmail.com>
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Closes #7904 
Closes #9089
2019-08-16 09:02:32 -06:00