Commit Graph

3225 Commits

Author SHA1 Message Date
Giuseppe Di Natale
bef6a8bc3a Correct cppcheck errors (#6662)
ZFS buildbot STYLE builder was moved to Ubuntu 17.04
which has a newer version of cppcheck. Handle the
new cppcheck errors.

uu_* functions removed in this commit were unused
and effectively dead code. They are now retired.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6653
2017-09-20 12:59:21 -07:00
Brian Behlendorf
266b181e75 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
2017-09-20 10:25:54 -07:00
Brian Behlendorf
c474f5e9a7 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
2017-09-20 10:25:54 -07:00
Brian Behlendorf
4e6a9e4598 ZTS fix slog_replay_volume.ksh failure
The slog_replay_volume.ksh test case will fail when the pool is
layered on files in a filesystem which does not support discard.
Avoid this issue by creating the pool using DISKS which will
either be loopback device or real disk.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6654
2017-09-20 10:25:54 -07:00
Brian Behlendorf
661907e6bc Linux 4.14 compat: IO acct, global_page_state, etc (#6655)
generic_start_io_acct/generic_end_io_acct in the master
branch of the linux kernel requires that the request_queue
be provided.

Move the logic from freemem in the spl to arc_free_memory
in arc.c. Do this so we can take advantage of global_page_state
interface checks in zfs.

Upstream kernel replaced struct block_device with
struct gendisk in struct bio. Determine if the
function bio_set_dev exists during configure
and have zfs use that if it exists.

bio_set_dev https://github.com/torvalds/linux/commit/74d4699
global_node_page_state https://github.com/torvalds/linux/commit/75ef718
io acct https://github.com/torvalds/linux/commit/d62e26b

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6635

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2017-09-19 14:24:34 -07:00
Gaurav Kumar
d3e7d981d4 Modifying XATTRs doesnt change the ctime
Changing any metadata, should modify the ctime.

Reviewed-by: Chunwei Chen <tuxoko@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: gaurkuma <gauravk.18@gmail.com>
Closes #3644
Closes #6586
2017-09-13 16:05:18 -07:00
Brian Behlendorf
a2a0440918 Fix volume WR_INDIRECT log replay (#6620)
The portion of the zvol_replay_write() handler responsible for
replaying indirect log records for some reason never existed.
As a result indirect log records were not being correctly replayed.

This went largely unnoticed since the majority of zvol log records
were of the type WR_COPIED or WR_NEED_COPY prior to OpenZFS 7578.

This patch updates zvol_replay_write() to correctly handle these
log records and adds a new test case which verifies volume replay
to prevent any regression.  The existing test case which verified
replay on filesystem was renamed slog_replay_fs.ksh for clarity.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6603
2017-09-13 16:04:16 -07:00
Giuseppe Di Natale
45d1abc74d Improved dnode allocation and dmu_hold_impl() (#6611)
Refactor dmu_object_alloc_dnsize() and dnode_hold_impl() to simplify the
code, fix errors introduced by commit dbeb879 (PR #6117) interacting
badly with large dnodes, and improve performance.

* When allocating a new dnode in dmu_object_alloc_dnsize(), update the
percpu object ID for the core's metadnode chunk immediately.  This
eliminates most lock contention when taking the hold and creating the
dnode.

* Correct detection of the chunk boundary to work properly with large
dnodes.

* Separate the dmu_hold_impl() code for the FREE case from the code for
the ALLOCATED case to make it easier to read.

* Fully populate the dnode handle array immediately after reading a
block of the metadnode from disk.  Subsequently the dnode handle array
provides enough information to determine which dnode slots are in use
and which are free.

* Add several kstats to allow the behavior of the code to be examined.

* Verify dnode packing in large_dnode_008_pos.ksh.  Since the test is
purely creates, it should leave very few holes in the metadnode.

* Add test large_dnode_009_pos.ksh, which performs concurrent creates
and deletes, to complement existing test which does only creates.

With the above fixes, there is very little contention in a test of about
200,000 racing dnode allocations produced by tests 'large_dnode_008_pos'
and 'large_dnode_009_pos'.

name                            type data
dnode_hold_dbuf_hold            4    0
dnode_hold_dbuf_read            4    0
dnode_hold_alloc_hits           4    3804690
dnode_hold_alloc_misses         4    216
dnode_hold_alloc_interior       4    3
dnode_hold_alloc_lock_retry     4    0
dnode_hold_alloc_lock_misses    4    0
dnode_hold_alloc_type_none      4    0
dnode_hold_free_hits            4    203105
dnode_hold_free_misses          4    4
dnode_hold_free_lock_misses     4    0
dnode_hold_free_lock_retry      4    0
dnode_hold_free_overflow        4    0
dnode_hold_free_refcount        4    57
dnode_hold_free_txg             4    0
dnode_allocate                  4    203154
dnode_reallocate                4    0
dnode_buf_evict                 4    23918
dnode_alloc_next_chunk          4    4887
dnode_alloc_race                4    0
dnode_alloc_next_block          4    18

The performance is slightly improved for concurrent creates with
16+ threads, and unchanged for low thread counts.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
2017-09-13 15:46:15 -07:00
dbavatar
89950722c6 Linux 4.8+ compatibility fix for vm stats
vm_node_stat must be used instead of vm_zone_stat. Unfortunately the
old code still compiles potentially leading to silent failure of
arc_evictable_memory()

AKAMAI: CR 3816601: Regression in zfs dropcache test

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Chunwei Chen <tuxoko@gmail.com>
Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com>
Closes #6528
2017-09-13 14:21:59 -07:00
LOLi
4810a108e8 Disable mount(8) canonical paths in do_mount()
By default the mount(8) command, as invoked by 'zfs mount', will try
to resolve any path parameter in its canonical form: this could lead
to mount failures when the cwd contains a symlink having the same name
of the dataset being mounted.

Fix this by explicitly disabling mount(8) path canonicalization.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #1791 
Closes #6429 
Closes #6437
2017-08-21 16:46:55 -07:00
LOLi
ae5b4a05ff Fix range locking in ZIL commit codepath
Since OpenZFS 7578 (1b7c1e5) if we have a ZVOL with logbias=throughput
we will force WR_INDIRECT itxs in zvol_log_write() setting itx->itx_lr
offset and length to the offset and length of the BIO from
zvol_write()->zvol_log_write(): these offset and length are later used
to take a range lock in zillog->zl_get_data function: zvol_get_data().

Now suppose we have a ZVOL with blocksize=8K and push 4K writes to
offset 0: we will only be range-locking 0-4096. This means the
ASSERTion we make in dbuf_unoverride() is no longer valid because now
dmu_sync() is called from zilog's get_data functions holding a partial
lock on the dbuf.

Fix this by taking a range lock on the whole block in zvol_get_data().

Reviewed-by: Chunwei Chen <tuxoko@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #6238 
Closes #6315 
Closes #6356 
Closes #6477
2017-08-21 16:46:54 -07:00
LOLi
3468fdbd34 Fix remounting snapshots read-write
It's not enough to preserve/restore MS_RDONLY on the superblock flags
to avoid remounting a snapshot read-write: be explicit about our
intentions to the VFS layer so the readonly bit is updated correctly
in do_remount_sb().

Reviewed-by: Chunwei Chen <tuxoko@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #6510
Closes #6515
2017-08-21 16:46:52 -07:00
Brian Behlendorf
fb3f1fdbd6 Fix ZTS grow_pool/setup
The addition of the large_dnode_008_pos test case, which runs
right before this one, exposed some racy behavior in grow_pool
setup.sh on the Ubuntu kmemleak builder.  Before creating
partitions on a device destroying any existing ones.

  ERROR: set_partition 1  100mb loop0 exited 1

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6499 
Closes #6516
2017-08-21 16:41:22 -07:00
sckobras
426563be70 vdev_id: implement slot numbering by port id
With HPE hardware and hpsa-driven SAS adapters, only a single phy is
reported, but no individual per-port phys (ie. no phy* entry below
port_dir), which breaks topology detection in the current sas_handler
code. Instead, slot information can be derived directly from the port
number. This change implements a new slot keyword "port" similar to
"id" and "lun", and assumes a default phy/port of 0 if no individual
phy entry can be found. It allows to use the "sas_direct" topology with
current HPE Dxxxx and Apollo 45xx JBODs.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Daniel Kobras <d.kobras@science-computing.de>
Closes #6484
2017-08-21 16:41:22 -07:00
Chunwei Chen
aec4318870 Fix NULL pointer when O_SYNC read in snapshot
When doing read on a file open with O_SYNC, it will trigger zil_commit.
However for snapshot, there's no zil, so we shouldn't be doing that.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Chunwei Chen <david.chen@osnexus.com>
Closes #6478 
Closes #6494
2017-08-21 16:41:22 -07:00
sanjeevbagewadi
2d9b57d39f zio_dva_throttle_done() should allow zinjected ZIO
If fault injection is enabled, the ZIO_FLAG_IO_RETRY could be set by
zio_handle_device_injection() to generate the FMA events and update
stats. Hence, ignore the flag and process such zios.

A better fix would be to add another flag in the zio_t to indicate that
the zio is failed because of a zinject rule. However, considering the
fact that we do this in debug bits, we could do with the crude check
using the global flag zio_injection_enabled which is set to 1 when
zinject records are added.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Sanjeev Bagewadi <sanjeev.bagewadi@gmail.com>
Closes #6383 
Closes #6384
2017-08-21 16:41:22 -07:00
Fabian-Gruenbichler
4bdb8fcfa8 Man page fixes
* ztest.1 man page: fix typo
* zfs-module-parameters.5 man page: fix grammar

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: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Closes #6492
2017-08-21 16:41:22 -07:00
gaurkuma
58c1c40a5e Crash in dbuf_evict_one with DTRACE_PROBE
Update the dbuf__evict__one() tracepoint so that it can safely
handle a NULL dmu_buf_impl_t pointer.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>    
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Signed-off-by: gaurkuma <gauravk.18@gmail.com>
Closes #6463
2017-08-21 16:41:22 -07:00
Tony Hutter
751575fe6f Tag zfs-0.7.1
META file and changelog updated.

Signed-off-by: Tony Hutter <hutter2@llnl.gov>
2017-08-08 13:14:32 -07:00
Brian Behlendorf
751941e248 Fix dnode allocation race
When performing concurrent object allocations using the new
multi-threaded allocator and large dnodes it's possible to
allocate overlapping large dnodes.

This case should have been handled by detecting an error
returned by dnode_hold_impl().  But that logic only checked
the returned dnp was not-NULL, and the dnp variable was not
reset to NULL when retrying.  Resolve this issue by properly
checking the return value of dnode_hold_impl().

Additionally, it was possible that dnode_hold_impl() would
misreport a dnode as free when it was in fact in use.  This
could occurs for two reasons:

* The per-slot zrl_lock must be held over the entire critical
  section which includes the alloc/free until the new dnode
  is assigned to children_dnodes.  Additionally, all of the
  zrl_lock's in the range must be held to protect moving
  dnodes.

* The dn->dn_ot_type cannot be solely relied upon to check
  the type.  When allocating a new dnode its type will be
  DMU_OT_NONE after dnode_create().  Only latter when
  dnode_allocate() is called will it transition to the new
  type.  This means there's a window when allocating where
  it can mistaken for a free dnode.

Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Ned Bass <bass6@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Olaf Faaland <faaland1@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6414
Closes #6439
2017-08-08 10:17:33 -07:00
Ned Bass
ef605a5517 Add debug log entries for failed receive records
Log contents of a receive record if an error occurs while writing
it out to the pool. This may help determine the cause when backup
streams are rejected as invalid.

Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ned Bass <bass6@llnl.gov>
Closes #6465
2017-08-08 10:17:23 -07:00
Karsten Kretschmer
8eb6dcec7d dracut: Install commands required for vdev_id
The vdev_id script requires awk, grep, and head.  Use dracut_install to
ensure that these commands are available in the initrd environment.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Karsten Kretschmer <kkretschmer@gmail.com>
Closes #6443
Closes #6452
2017-08-07 09:37:30 -07:00
Tony Hutter
07cbcd5089 Only record zio->io_delay on reads and writes
While investigating https://github.com/zfsonlinux/zfs/issues/6425 I
noticed that ioctl ZIOs were not setting zio->io_delay correctly.  They
would set the start time in zio_vdev_io_start(), but never set the end
time in zio_vdev_io_done(), since ioctls skip it and go straight to
zio_done().  This was causing spurious "delayed IO" events to appear,
which would eventually get rate-limited and displayed as
"Missed events" messages in zed.

To get around the problem, this patch only sets zio->io_delay for read
and write ZIOs, since that's all we care about anyway.

Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #6425
Closes #6440
2017-08-02 11:37:18 -07:00
Giuseppe Di Natale
12acabe2a4 mmp_on_uberblocks: Use kstat for uberblock counts
Use kstat to get a more accurate count of uberblock updates.
Using a loop with zdb can potentially miss some uberblocks.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6407
Closes #6419
2017-08-02 11:21:33 -07:00
LOLi
20c88dc3ef Fix volmode=none property behavior at import time
At import time spa_import() calls zvol_create_minors() directly: with
the current implementation we have no way to avoid device node
creation when volmode=none.

Fix this by enforcing volmode=none directly in zvol_alloc().

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #6426
2017-08-02 11:21:14 -07:00
Brian Behlendorf
0c8fedeb35 Fix aarch64 build
Add aarch64 to the list of architecture which do not sanitize the
LDFLAGS from the environment.  See fb963d33 for details.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6424
2017-08-02 11:20:50 -07:00
Giuseppe Di Natale
affb7141d7 Disable zfs_send_007_pos
Test case zfs_send_007_pos regularly is killed
by test-runner during zfs-tests on buildbot. Disable
it for now until further investigation can be done.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6422
2017-08-02 11:20:32 -07:00
bunder2015
e0031d86b7 Correct man page generation
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: bunder2015 <omfgbunder@gmail.com>
Closes #6409
Closes #6411
2017-07-28 11:01:53 -07:00
Brian Behlendorf
ccad64314a Tag zfs-0.7.0
META file and changelog updated.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2017-07-26 10:13:25 -07:00
Giuseppe Di Natale
bff245dd34 OpenZFS 8508 - Mounting a zpool on 32-bit platforms panics
Authored by: Justin Hibbits <chmeeedalf@gmail.com>
Reviewed by: Matt Ahrens <mahrens@delphix.com>
Approved by: Dan McDonald <danmcd@joyent.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: Giuseppe Di Natale <dinatale2@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/8508
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/15fc257
Closes #6404
2017-07-26 09:44:21 -07:00
Ned Bass
8740cf4a2f Add line info and SET_ERROR() to ZFS debug log
Redefine the SET_ERROR macro in terms of __dprintf() so the error
return codes get logged as both tracepoint events (if tracepoints are
enabled) and as ZFS debug log entries.  This also allows us to use
the same definition of SET_ERROR() in kernel and user space.

Define a new debug flag ZFS_DEBUG_SET_ERROR=512 that may be bitwise
or'd into zfs_flags. Setting this flag enables both dprintf() and
SET_ERROR() messages in the debug log. That is, setting
ZFS_DEBUG_SET_ERROR and ZFS_DEBUG_DPRINTF|ZFS_DEBUG_SET_ERROR are
equivalent (this was done for sake of simplicity). Leaving
ZFS_DEBUG_SET_ERROR unset suppresses the SET_ERROR() messages which
helps avoid cluttering up the logs.

To enable SET_ERROR() logging, run:

  echo 1 >   /sys/module/zfs/parameters/zfs_dbgmsg_enable
  echo 512 > /sys/module/zfs/parameters/zfs_flags

Remove the zfs_set_error_class tracepoints event class since
SET_ERROR() now uses __dprintf(). This sacrifices a bit of
granularity when selecting individual tracepoint events to enable but
it makes the code simpler.

Include file, function, and line number information in debug log
entries.  The information is now added to the message buffer in
__dprintf() and as a result the zfs_dprintf_class tracepoints event
class was changed from a 4 parameter interface to a single parameter.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ned Bass <bass6@llnl.gov>
Closes #6400
2017-07-25 23:09:48 -07:00
Brian Behlendorf
9ff13dbe92 Fix zpool-features.5 indentation
The userobj_accounting feature described in the zpool-features.5
man page was incorrectly indented.  Fix it.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6402
2017-07-25 18:57:00 -07:00
Ned Bass
73aac4aa41 Some additional send stream validity checking
Check in the DMU whether an object record in a send stream being
received contains an unsupported dnode slot count, and return an
error if it does. Failure to catch an unsupported dnode slot count
would result in a panic when the SPA attempts to increment the
reference count for the large_dnode feature and the pool has the
feature disabled. This is not normally an issue for a well-formed
send stream which would have the DMU_BACKUP_FEATURE_LARGE_DNODE flag
set if it contains large dnodes, so it will be rejected as
unsupported if the required feature is disabled. This change adds a
missing object record field validation.

Add missing stream feature flag checks in
dmu_recv_resume_begin_check().

Consolidate repetitive comment blocks in dmu_recv_begin_check().

Update zstreamdump to print the dnode slot count (dn_slots) for an
object record when running in verbose mode.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Ned Bass <bass6@llnl.gov>
Closes #6396
2017-07-25 18:52:40 -07:00
Brian Behlendorf
3f759c0c73 Fix 'zpool clear' on suspended pools
'zpool clear' should be able to resume I/O on suspended, but otherwise
healthy, pools.

4a283c7 accidentally introduced a new code path where we call
txg_wait_synced() on the suspended pool before we had the chance to
resume I/O via zio_resume(): this results in the 'zpool clear'
command hanging indefinitely, waiting for a TXG that cannot be synced.

Fix this by avoiding the call to txg_wait_synced().

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6399
2017-07-25 12:20:52 -07:00
Justin Bedő
f269060a24 Fix autoconf detection of super_setup_bdi_name
The previous autoconf test for the presence of super_setup_bdi_name()
uses an invocation with an incorrect type signature, producing a
warning by the compiler when the test is run. This gets elevated to an
error when compiling with -Werror=format-security, causing autoconf to
falsely infer super_setup_bdi_name() is not present. This updates the
testing code to match the invocation used in
include/linux/vfs_compat.h.

Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Justin Bedo <cu@cua0.org>
Closes #6398
2017-07-25 10:30:20 -07:00
Olaf Faaland
e889f0f520 Report MMP_STATE_NO_HOSTID immediately
There is no need to perform the activity check before detecting that the
user must set the system hostid, because the pool's multihost property
is on, but spa_get_hostid() returned 0.  The initial call to
vdev_uberblock_load() provided the information required.

Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Closes #6388
2017-07-25 13:22:28 -04:00
Olaf Faaland
0582e40322 Add callback for zfs_multihost_interval
Add a callback to wake all running mmp threads when
zfs_multihost_interval is changed.

This is necessary when the interval is changed from a very large value
to a significantly lower one, while pools are imported that have the
multihost property enabled.

Without this commit, the mmp thread does not wake up and detect the new
interval until after it has waited the old multihost interval time.  A
user monitoring mmp writes via the provided kstat would be led to
believe that the changed setting did not work.

Added a test in the ZTS under mmp to verify the new functionality is
working.

Added a test to ztest which starts and stops mmp threads, and calls into
the code to signal sleeping mmp threads, to test for deadlocks or
similar locking issues.

Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Closes #6387
2017-07-25 13:22:20 -04:00
Olaf Faaland
60f5103445 Skip activity check for zhack RO import
"zhack feature stat" performs a read-only import, so the MMP activity
check is not necessary.

Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Closes #6388
Closes #6389
2017-07-25 13:22:14 -04:00
Olaf Faaland
b9373170e3 Add zgenhostid utility script
Turning the multihost property on requires that a hostid be set to allow
ZFS to determine when a foreign system is attemping to import a pool.
The error message instructing the user to set a hostid refers to
genhostid(1).

Genhostid(1) is not available on SUSE Linux.  This commit adds a script
modeled after genhostid(1) for those users.

Zgenhostid checks for an /etc/hostid file; if it does not exist, it
creates one and stores a value.  If the user has provided a hostid as an
argument, that value is used.  Otherwise, a random hostid is generated
and stored.

This differs from the CENTOS 6/7 versions of genhostid, which overwrite
the /etc/hostid file even though their manpages state otherwise.

A man page for zgenhostid is added. The one for genhostid is in (1), but
I put zgenhostid in (8) because I believe it's more appropriate.

The mmp tests are modified to use zgenhostid to set the hostid instead
of using the spl_hostid module parameter.  zgenhostid will not replace
an existing /etc/hostid file, so new mmp_clear_hostid calls are
required.

Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Closes #6358
Closes #6379
2017-07-25 13:22:03 -04:00
Olaf Faaland
ffb195c256 Release SCL_STATE in map_write_done()
The config lock must be held for the duration of the MMP write.
Since the I/Os are executed via map_nowait(), the done function
is the only place where we know the write has completed.

Since SCL_STATE is taken as reader, overlapping I/Os do not
create a deadlock.  The refcount is simply increased when new
I/Os are queued and decreased when I/Os complete.

Test case added which exercises the probe IO call path to
verify the fix and prevent a regression.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Closes #6394
2017-07-25 12:25:05 -04:00
Olaf Faaland
f43615d0cc Revert Fix vdev_probe() call wrt SCL_STATE_ALL
This reverts commit cc9c6bc, which has been causing intermittent
test failures on buildbot.  A correct fix for this locking issue
has been applied in a separate patch.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
2017-07-25 12:24:42 -04:00
Giuseppe Di Natale
f6837d9b53 Increase delay for zed log in events tests
In zed event test cases, a brief delay was introduced
to allow for events to make it to the zed log. On at least
one buildbot builder, the 1 second delay is not long enough.
Therefore, increasing the delay should ensure the zed has
more than enough time to write to its log.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6395
2017-07-24 13:02:42 -07:00
LOLi
871e07321c Fix buffer overflow in dsl_dataset_name()
If we're creating a pool with version >= SPA_VERSION_DSL_SCRUB (v11)
we need to account for additional space needed by the origin dataset
which will also be snapshotted: "poolname"+"/"+"$ORIGIN"+"@"+"$ORIGIN".

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #6374
2017-07-24 12:56:49 -07:00
Chunwei Chen
83a5e4d6b9 Fix don't zero_label when replace with spare
When replacing a disk with non-wholedisk spare, we shouldn't zero_label
it. The wholedisk case already skip it. In fact, zero_label function
will fail saying device busy because it's already opened exclusively,
but since there's no error checking, the replace command will succeed,
causing great confusion.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Chunwei Chen <david.chen@osnexus.com>
Closes #6369
2017-07-24 12:49:27 -07:00
Giuseppe Di Natale
d6bcf7ff5e Restrict zpool iostat/status -c to search path
zpool iostat/status -c is supposed to be restricted
by its search path, but currently isn't. To prevent
arbitrary scripts from being executed, disallow '/'
from commands.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Ned Bass <bass6@llnl.gov>
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6353 
Closes #6359
2017-07-24 11:53:59 -07:00
Olaf Faaland
b6e5c40382 Use correct macro for hz in mmp.c
Commit 379ca9c Multi-modifier protection (MMP) used HZ to convert
nanoseconds to ticks for use with cv_timedwait() and ddi_get_lbolt().
The correct macro is hz, which is defined within the SPL for kernel
space, and within zfs_context.h for user space.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Closes #6357 
Closes #6360
2017-07-24 11:22:10 -07:00
Giuseppe Di Natale
802ae562ed Fix coverity defects: CID 165755
CID 165755: Division or modulo by zero (DIVIDE_BY_ZERO)

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Olaf Faaland <faaland1@llnl.gov>
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6352
2017-07-24 11:16:58 -07:00
Giuseppe Di Natale
39554216df zfs_mount_001_neg: use log_must_busy in cleanup
Use log_must_busy when destroying the snapshot
and dataset during cleanup in zfs_mount_001_neg.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6382
2017-07-24 11:10:25 -07:00
Giuseppe Di Natale
0c656a964d Disable nbmand tests on kernels w/o support
This change allows mountpoint_003_pos and send-c_props
to run on Linux kernels that do not support mandatory
locking. Linux kernel versions greater than or equal to
4.4 no longer support mandatory locking and the test
suite will now account for that.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #6346 
Closes #6347 
Closes #6362
2017-07-24 11:03:50 -07:00
Tony Hutter
c89a02a26a Add new fsck return code to zvol_misc_002_pos
zvol_misc_002_pos was failing on Fedora 26 because its newer version
of fsck was returning a different code than previous versions.  The
new fsck error code is valid and is been added to the test in this
patch.

Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Olaf Faaland <faaland1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #6350
2017-07-24 10:58:14 -07:00