Commit Graph

3341 Commits

Author SHA1 Message Date
Scot W. Stevenson
19528cf949 Add Python 3 rewrite of arc_summary.py
Add new script arc_summary3.py as a complete rewrite of the
arc_summary.py tool (see issue #6873)

Add new options:

        -g/--graph    - Display crude graphic representation
                        of ARC status and quit
        -r/--raw      - Print all available information as
                        minimally formatted list (for grep)
        -s/--section  - Print a single section. This
                        replaces -p/--page, which is kept for
                        backwards use but marked as
                        depreciated

Add new sections with information on ZIL and SPL. Notify user
if sections L2ARC and VDEV are skipped instead of failing
silently. Add warning that -p/--page option is depreciated.

Developed for Python 3.5.

Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Scot W. Stevenson <scot.stevenson@gmail.com>
Closes #6873 
Closes #6892
2018-02-28 08:52:34 -08:00
Tony Hutter
3e9c9d8a89 Add SMART self-test results to zpool status -c
Add in SMART self-test results to zpool status|iostat -c.  This
works for both SAS and SATA drives.

Also, add plumbing to allow the 'smart' script to take smartctl
output from a directory of output text files instead of running
it against the vdevs.

Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #7178
2018-02-27 09:31:27 -08:00
Tom Caputi
095495e008 Raw DRR_OBJECT records must write raw data
b1d21733 made it possible for empty metadnode blocks to be
compressed to a hole, fixing a bug that would cause invalid
metadnode MACs when a send stream attempted to free objects
and allowing the blocks to be reclaimed when they were no
longer needed. However, this patch also introduced a race
condition; if a txg sync occurred after a DRR_OBJECT_RANGE
record was received but before any objects were added, the
metadnode block would be compressed to a hole and lose all
of its encryption parameters. This would cause subsequent
DRR_OBJECT records to fail when they attempted to write
their data into an unencrypted block. This patch defers the
DRR_OBJECT_RANGE handling to receive_object() so that the
encryption parameters are set with each object that is
written into that block.

Reviewed-by: Kash Pande <kash@tripleback.net>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #7215 
Closes #7236
2018-02-27 09:04:05 -08:00
Tim Chase
8b5814393f Incorrect maximum DVA value in DDE_GET_NDVAS()
The conditional was reversed which caused garbage values to be used when
calculating dds_ref_dsize.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tom Caputi <tcaputi@datto.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Tim Chase <tim@chase2k.com>
Closes #7234
2018-02-26 14:20:12 -08:00
LOLi
4af6873af6 Fix segfault in zfs_do_bookmark()
When invoked with wrong parameters 'zfs bookmark' fails to gracefully
validate user input and crashes.

This is a regression accidentally introduced in 587e228; this commit
adds additional tests to the ZFS Test Suite to exercise this codepath.

Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: KireinaHoro <i@jsteward.moe>
Signed-off-by:  loli10K <ezomori.nozomu@gmail.com>
Closes #7228 
Closes #7229
2018-02-26 09:55:18 -08:00
Brian Behlendorf
2a0428f16b
ZTS: Fix zfs_share_* test case failures
Prevent false positives when running the zfs_share_* test
cases due to leftover stale /var/lib/nfs/etab entries.  When
starting the test group re-synchronize the /var/lib/nfs/etab
file with /etc/exports.  At this point in the testing there
will be no additional `zfs share` entries to add.

Reviewed by: George Melikov <mail@gmelikov.ru>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7226
2018-02-24 10:07:12 -08:00
Kash Pande
41532e5a29 Shellcheck cleanup for initrd scripts
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Co-authored-by: Kash Pande <kash@tripleback.net>
Co-authored-by: Matthew Thode <mthode@mthode.org>
Signed-off-by: Kash Pande <kash@tripleback.net>
Signed-off-by: Matthew Thode <mthode@mthode.org>
Closes #7214
2018-02-23 12:57:41 -08:00
Kash Pande
7280d58197 Enable booting from nested encrypted datasets
- enable booting from nested encrypted datasets
- fix plymouth boot splash passphrase entry
- optimize unlock process

Co-authored-by: Kash Pande <kash@tripleback.net>
Co-authored-by: Matthew Thode <mthode@mthode.org>
Signed-off-by: Kash Pande <kash@tripleback.net>
Signed-off-by: Matthew Thode <mthode@mthode.org>
Closes #7214
2018-02-23 12:57:28 -08:00
Tony Hutter
bf95a000c4 Add scrub after resilver zed script
* Add a zed script to kick off a scrub after a resilver.  The script is
disabled by default.

* Add a optional $PATH (-P) option to zed to allow it to use a custom
$PATH for its zedlets.  This is needed when you're running zed under
the ZTS in a local workspace.

* Update test scripts to not copy in all-debug.sh and all-syslog.sh by
default.  They can be optionally copied in as part of zed_setup().
These scripts slow down zed considerably under heavy events loads and
can cause events to be dropped or their delivery delayed. This was
causing some sporadic failures in the 'fault' tests.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #4662 
Closes #7086
2018-02-23 11:38:05 -08:00
chrisrd
e9a7729008 Fix free memory calculation on v3.14+
Provide infrastructure to auto-configure to enum and API changes in the
global page stats used for our free memory calculations.

arc_free_memory has been broken since an API change in Linux v3.14:

2016-07-28 v4.8 599d0c95 mm, vmscan: move LRU lists to node
2016-07-28 v4.8 75ef7184 mm, vmstat: add infrastructure for per-node
  vmstats

These commits moved some of global_page_state() into
global_node_page_state(). The API change was particularly egregious as,
instead of breaking the old code, it silently did the wrong thing and we
continued using global_page_state() where we should have been using
global_node_page_state(), thus indexing into the wrong array via
NR_SLAB_RECLAIMABLE et al.

There have been further API changes along the way:

2017-07-06 v4.13 385386cf mm: vmstat: move slab statistics from zone to
  node counters
2017-09-06 v4.14 c41f012a mm: rename global_page_state to
  global_zone_page_state

...and various (incomplete, as it turns out) attempts to accomodate
these changes in ZoL:

2017-08-24 2209e409 Linux 4.8+ compatibility fix for vm stats
2017-09-16 787acae0 Linux 3.14 compat: IO acct, global_page_state, etc
2017-09-19 661907e6 Linux 4.14 compat: IO acct, global_page_state, etc

The config infrastructure provided here resolves these issues going back
to the original API change in v3.14 and is robust against further Linux
changes in this area.

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: Chris Dunlop <chris@onthe.net.au>
Closes #7170
2018-02-23 08:50:06 -08:00
Olaf Faaland
7088545d01 Report duration and error in mmp_history entries
After an MMP write completes, update the relevant mmp_history entry
with the time between submission and completion, and the error
status of the write.

[faaland1@toss3a zfs]$ cat /proc/spl/kstat/zfs/pool/multihost
39 0 0x01 100 8800 69147946270893 72723903122926
id       txg     timestamp  error  duration   mmp_delay    vdev_guid
10607    1166    1518985089 0      138301     637785455    4882...
10608    1166    1518985089 0      136154     635407747    1151...
10609    1166    1518985089 0      803618560  633048078    9740...
10610    1166    1518985090 0      144826     633048078    4882...
10611    1166    1518985090 0      164527     666187671    1151...

Where duration = gethrtime_in_done_fn - gethrtime_at_submission, and
error = zio->io_error.

Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Closes #7190
2018-02-22 15:34:34 -08:00
Olaf Faaland
0d398b2564 Do not initiate MMP writes while pool is suspended
While the pool is suspended on host A, it may be imported on host B.
If host A continued to write MMP blocks, it would be blindly
overwriting MMP blocks written by host B, and the blocks written by
host A would have outdated txg information.

Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Closes #7182
2018-02-22 09:14:46 -08:00
Tony Hutter
a5369b61a2 Linux 4.16 compat: use correct *_dec_and_test()
Use refcount_dec_and_test() on 4.16+ kernels, atomic_dec_and_test()
on older kernels.  https://lwn.net/Articles/714974/

Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes: #7179 
Closes: #7211
2018-02-22 09:02:06 -08:00
Tom Caputi
f8478fc2ca Fix bounds check in zio_crypt_do_objset_hmacs
The current bounds check in zio_crypt_do_objset_hmacs() does not
properly handle the possible sizes of the objset_phys_t and
can therefore read outside the buffer's memory. If that memory
happened to match what the check was actually looking for, the
objset would fail to be owned, complaining that the MAC was
invalid.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #7210
2018-02-22 08:50:14 -08:00
Toomas Soome
09302a4ca8 OpenZFS 9035 - zfs: this statement may fall through
Authored by: Toomas Soome <tsoome@me.com>
Reviewed by: Yuri Pankov <yuripv@yuripv.net>
Reviewed by: Andy Fiddaman <omnios@citrus-it.co.uk>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Dan McDonald <danmcd@joyent.com>
Ported-by: Giuseppe Di Natale <dinatale2@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/9035
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/46ac8fdfc5
Closes #7206
2018-02-21 14:55:34 -08:00
Matthew Thode
a2819058f5 Allow modprobe to fail when called within systemd
This allows for systems with zfs built into the kernel manually to run
these services.  Otherwise the service will fail to start.

Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Reviewed-by: Kash Pande <kash@tripleback.net>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matthew Thode <mthode@mthode.org>
Closes #7174
2018-02-21 14:45:35 -08:00
bunder2015
ca0b376604 Add SMART attributes for SSD and NVMe
This adds the SMART attributes required to probe Samsung SSD and NVMe
(and possibly others) disks when using the "zpool status -c" command.

Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: bunder2015 <omfgbunder@gmail.com>
Closes #7183 
Closes #7193
2018-02-21 13:52:47 -08:00
chrisrd
26cb4b8791 Allow make checkstyle and paxscript in build dir
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: Chris Dunlop <chris@onthe.net.au>
Closes #7202
2018-02-21 12:35:59 -08:00
LOLi
faa97c1619 Want 'zfs send -b'
This change implements 'zfs send -b' which can be used to send only
received property values whether or not they are overridden by local
settings.

This can be very useful during "restore" operations from a backup pool
because it allows to send only the property values originally sent
from the backup source, even though they were later modified on the
destination either by a 'zfs set' operation, explicit 'zfs inherit' or
overridden during the receive process via 'zfs receive -o|-x'.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #7156
2018-02-21 12:32:06 -08:00
Tom Caputi
b0918402dc Raw receive should change key atomically
Currently, raw zfs sends transfer the encrypted master keys and
objset_phys_t encryption parameters in the DRR_BEGIN payload of
each send file. Both of these are processed as soon as they are
read in dmu_recv_stream(), meaning that the new keys are set
before the new snapshot is received. In addition to the fact that
this changes the user's keys for the dataset earlier than they
might expect, the keys were never reset to what they originally
were in the event that the receive failed. This patch splits the
processing into objset handling and key handling, the later of
which is moved to dmu_recv_end() so that they key change can be
done atomically.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #7200
2018-02-21 12:31:03 -08:00
Tom Caputi
4a385862b7 Prevent raw zfs recv -F if dataset is unencrypted
The current design of ZFS encryption only allows a dataset to
have one DSL Crypto Key at a time. As a result, it is important
that the zfs receive code ensures that only one key can be in use
at a time for a given DSL Directory. zfs receive -F complicates
this, since the new dataset is received as a clone of the existing
one so that an atomic switch can be done at the end. To prevent
confusion about which dataset is actually encrypted a check was
added to ensure that encrypted datasets cannot use zfs recv -F to
completely replace existing datasets. Unfortunately, the check did
not take into account unencrypted datasets being overriden by
encrypted ones as a case.

Along the same lines, the code also failed to ensure that raw
recieves could not be done on top of existing unencrypted
datasets, which causes amny problems since the new stream cannot
be decrypted.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #7199
2018-02-21 12:30:11 -08:00
Tom Caputi
b1d217338a Raw receives must compress metadnode blocks
Currently, the DMU relies on ZIO layer compression to free LO
dnode blocks that no longer have objects in them. However,
raw receives disable all compression, meaning that these blocks
can never be freed. In addition to the obvious space concerns,
this could also cause incremental raw receives to fail to mount
since the MAC of a hole is different from that of a completely
zeroed block.

This patch corrects this issue by adding a special case in
zio_write_compress() which will attempt to compress these blocks
to a hole even if ZIO_FLAG_RAW_ENCRYPT is set. This patch also
removes the zfs_mdcomp_disable tunable, since tuning it could
cause these same issues.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #7198
2018-02-21 12:28:52 -08:00
Tom Caputi
5121c4fb0c Remove unnecessary txg syncs from receive_object()
1b66810b introduced serveral changes which improved the reliability
of zfs sends when large dnodes were involved. However, these fixes
required adding a few calls to txg_wait_synced() in the DRR_OBJECT
handling code. Although most of them are currently necessary, this
patch allows the code to continue without waiting in some cases
where it doesn't have to.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #7197
2018-02-21 12:26:51 -08:00
Tom Caputi
478b3150de Add omitted set for os->os_next_write_raw
This one line patch adds adds a set to os->os_next_write_raw
that was omitted when the code was updated in 1b66810. Without
it, the code (in some instances) could attempt to write raw
encrypted data as regular unencrypted data without the keys
being loaded, triggering an ASSERT in zio_encrypt().

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #7196
2018-02-21 12:24:37 -08:00
Giuseppe Di Natale
f2c0dee23b Correct count_uberblocks in mmp.kshlib
A log_must call was causing count_uberblocks to return more
than just the uberblock count. Remove the log_must since it
was only logging a sleep.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Olaf Faaland <faaland1@llnl.gov>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #7191
2018-02-20 16:28:52 -08:00
Tom Caputi
163a8c28dd ZIL claiming should not start user accounting
Currently, ZIL claiming dirties objsets which causes
dsl_pool_sync() to attempt to perform user accounting on
them. This causes problems for encrypted datasets that were
raw received before the system went offline since they
cannot perform user accounting until they have their keys
loaded. This triggers an ASSERT in zio_encrypt(). Since
encryption was added, the code now depends on the fact that
data should only be written when objsets are owned. This
patch adds a check in dmu_objset_do_userquota_updates()
to ensure that useraccounting is only done when the objsets
are actually owned for write. As part of this work, the
zfsvfs and zvol code was updated so that it no longer lies
about owning objsets readonly.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #6916 
Closes #7163
2018-02-20 16:27:31 -08:00
Don Brady
cbce581353 Fix coverity defects: zfs channel programs
CID 173243, 173245:  Memory - corruptions  (OVERRUN)
 Added size argument to lcompat_sprintf() to avoid use of INT_MAX

CID 173244:  Integer handling issues  (OVERFLOW_BEFORE_WIDEN)
 Added cast to uint64_t to avoid a 32 bit overflow warning

CID 173242:  Integer handling issues  (CONSTANT_EXPRESSION_RESULT)
 Conditionally removed unused luai_numisnan() floating point check

CID 173241:  Resource leaks  (RESOURCE_LEAK)
 Added missing close(fd) on error path

CID 173240:    (UNINIT)
Fixed uninitialized variable in get_special_prop()

CID 147560:  Null pointer dereferences  (NULL_RETURNS)
Cleaned up bad code merge in dsl_dataset_promote_check()

CID 28475:  Memory - illegal accesses  (OVERRUN)
Fixed lcompat_sprintf() to use a size paramater

CID 28418, 28422:  Error handling issues  (CHECKED_RETURN)
Added function result cast to (void) to avoid warning

CID 23935, 28411, 28412:  Memory - corruptions  (ARRAY_VS_SINGLETON)
Added casts to avoid exposing result as an array

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Don Brady <don.brady@delphix.com>
Closes #7181
2018-02-20 11:19:42 -08:00
Tom Caputi
7b30ee6baf Project dnode should be protected by local MAC
This patch corrects a small security issue with 9c5167d1. When the
project dnode was added to the objset_phys_t, it was not included
in the local MAC for cryptographic protection, allowing an attacker
to modify this data without the consent of the key holder. This
patch does represent an on-disk format change for anyone using
project dnodes on an encrypted dataset.

Signed-off-by: Tom Caputi <tcaputi@datto.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7177
2018-02-20 09:41:07 -08:00
chrisrd
e921f6508b Fix config issues: frame size and headers
1. With various (debug and/or tracing?) kernel options enabled it's
possible for 'struct inode' and 'struct super_block' to exceed the
default frame size, leaving errors like this in config.log:

build/conftest.c:116:1: error: the frame size of 1048 bytes is larger
than 1024 bytes [-Werror=frame-larger-than=]

Fix this by removing the frame size warning for config checks

2. Without the correct headers included, it's possible for declarations
to be missed, leaving errors like this in the config.log:

build/conftest.c:131:14: error: ‘struct nameidata’ declared inside
parameter list [-Werror]

Fix this by adding appropriate headers.

Note: Both these issues can result in silent config failures because
the compile failure is taken to mean "this option is not supported by
this kernel" rather than "there's something wrong with the config
test". This can lead to something merely annoying (compile failures) to
something potentially serious (miscompiled or misused kernel primitives
or functions). E.g. the fixes included here resulted in these
additional defines in zfs_config.h with linux v4.14.19:

Also, drive-by whitespace fixes in config/* files which don't mention
"GNU" (those ones look to be imported from elsewhere so leave them
alone).

Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Chris Dunlop <chris@onthe.net.au>
Closes #7169
2018-02-15 12:58:23 -08:00
Don Brady
62d5c55313 Address objtool check failures in lua module
The use of void __attribute__((noreturn)) in kernel builds
was causing lots of warnings if CONFIG_STACK_VALIDATION
is active. For now we just remove this attribute to achieve
clean builds for the Lua module. There was no significant
increase in the time to run the full channel_program ZTS tests.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Don Brady <don.brady@delphix.com>
Closes #7173
2018-02-15 09:53:04 -08:00
Olaf Faaland
ec7c1b914c Clarify zinject(8) explanation of -e
Error injection of EIO or ENXIO simply sets the zio's io_error value,
rather than preventing the read or write from occurring.  This is
important information as it affects how the probes must be used.

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: Olaf Faaland <faaland1@llnl.gov>
Closes #7172
2018-02-15 09:50:06 -08:00
George Wilson
ddc751d56b OpenZFS 8857 - zio_remove_child() panic due to already destroyed parent zio
PROBLEM
=======
It's possible for a parent zio to complete even though it has children
which have not completed. This can result in the following panic:
    > $C
    ffffff01809128c0 vpanic()
    ffffff01809128e0 mutex_panic+0x58(fffffffffb94c904, ffffff597dde7f80)
    ffffff0180912950 mutex_vector_enter+0x347(ffffff597dde7f80)
    ffffff01809129b0 zio_remove_child+0x50(ffffff597dde7c58, ffffff32bd901ac0,
    ffffff3373370908)
    ffffff0180912a40 zio_done+0x390(ffffff32bd901ac0)
    ffffff0180912a70 zio_execute+0x78(ffffff32bd901ac0)
    ffffff0180912b30 taskq_thread+0x2d0(ffffff33bae44140)
    ffffff0180912b40 thread_start+8()
    > ::status
    debugging crash dump vmcore.2 (64-bit) from batfs0390
    operating system: 5.11 joyent_20170911T171900Z (i86pc)
    image uuid: (not set)
    panic message: mutex_enter: bad mutex, lp=ffffff597dde7f80
    owner=ffffff3c59b39480 thread=ffffff0180912c40
    dump content: kernel pages only
The problem is that dbuf_prefetch along with l2arc can create a zio tree
which confuses the parent zio and allows it to complete with while children
still exist. Here's the scenario:
    zio tree:
        pio
         |--- lio
The parent zio, pio, has entered the zio_done stage and begins to check its
children to see there are still some that have not completed. In zio_done(),
the children are checked in the following order:
    zio_wait_for_children(zio, ZIO_CHILD_VDEV, ZIO_WAIT_DONE)
    zio_wait_for_children(zio, ZIO_CHILD_GANG, ZIO_WAIT_DONE)
    zio_wait_for_children(zio, ZIO_CHILD_DDT, ZIO_WAIT_DONE)
    zio_wait_for_children(zio, ZIO_CHILD_LOGICAL, ZIO_WAIT_DONE)
If pio, finds any child which has not completed then it stops executing and
goes to sleep. Each call to zio_wait_for_children() will grab the io_lock
while checking the particular child.
In this scenario, the pio has completed the first call to
zio_wait_for_children() to check for any ZIO_CHILD_VDEV children. Since
the only zio in the zio tree right now is the logical zio, lio, then it
completes that call and prepares to check the next child type.
In the meantime, the lio completes and in its callback creates a child vdev
zio, cio. The zio tree looks like this:
    zio tree:
        pio
         |--- lio
         |--- cio
The lio then grabs the parent's io_lock and removes itself.
    zio tree:
        pio
         |--- cio
The pio continues to run but has already completed its check for ZIO_CHILD_VDEV
and will erroneously complete. When the child zio, cio, completes it will panic
the system trying to reference the parent zio which has been destroyed.
SOLUTION
========
The fix is to rework the zio_wait_for_children() logic to accept a bitfield
for all the children types that it's interested in checking. The
io_lock will is held the entire time we check all the children types. Since
the function now accepts a bitfield, a simple ZIO_CHILD_BIT() macro is provided
to allow for the conversion between a ZIO_CHILD type and the bitfield used by
the zio_wiat_for_children logic.

Authored by: George Wilson <george.wilson@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Andriy Gapon <avg@FreeBSD.org>
Reviewed by: Youzhong Yang <youzhong@gmail.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Approved by: Dan McDonald <danmcd@omniti.com>
Ported-by: Giuseppe Di Natale <dinatale2@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/8857
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/862ff6d99c
Issue #5918
Closes #7168
2018-02-14 15:30:09 -08:00
loli10K
4411de2116 OpenZFS 8940 - Sending an intra-pool resumable send stream may result in EXDEV
Because resuming from a token requires "guid" -> "snapshot" mapping
we have to walk the whole dataset hierarchy to find the right snapshot
to send; when both source and destination exists, for an incremental
resumable stream, libzfs gets confused and picks up the wrong snapshot
to send from: this results in attempting to send
   "destination@snap1 -> source@snap2"
instead of
   "source@snap1 -> source@snap2"
which fails with a "Invalid cross-device link" error (EXDEV).
Fix this by adjusting the logic behind dataset traversal in
zfs_iter_children() to pick the right snapshot to send from.
Additionally update dry-run 'zfs send -t' to print its output to
stderr: this is consistent with other dry-run commands.

Patch Notes:
Reconciled differences between OpenZFS and
aee1dd4d98.

Authored by: loli10K <ezomori.nozomu@gmail.com>
Reviewed by: Paul Dagnelie <pcd@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Approved by: Hans Rosenfeld <rosenfeld@grumpf.home-2000.org>
Ported-by: Giuseppe Di Natale <dinatale2@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/8940
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/9f7867c206
Closes #7171
2018-02-14 14:35:04 -08:00
Nasf-Fan
9c5167d19f Project Quota on ZFS
Project quota is a new ZFS system space/object usage accounting
and enforcement mechanism. Similar as user/group quota, project
quota is another dimension of system quota. It bases on the new
object attribute - project ID.

Project ID is a numerical value to indicate to which project an
object belongs. An object only can belong to one project though
you (the object owner or privileged user) can change the object
project ID via 'chattr -p' or 'zfs project [-s] -p' explicitly.
The object also can inherit the project ID from its parent when
created if the parent has the project inherit flag (that can be
set via 'chattr +P' or 'zfs project -s [-p]').

By accounting the spaces/objects belong to the same project, we
can know how many spaces/objects used by the project. And if we
set the upper limit then we can control the spaces/objects that
are consumed by such project. It is useful when multiple groups
and users cooperate for the same project, or a user/group needs
to participate in multiple projects.

Support the following commands and functionalities:

zfs set projectquota@project
zfs set projectobjquota@project

zfs get projectquota@project
zfs get projectobjquota@project
zfs get projectused@project
zfs get projectobjused@project

zfs projectspace

zfs allow projectquota
zfs allow projectobjquota
zfs allow projectused
zfs allow projectobjused

zfs unallow projectquota
zfs unallow projectobjquota
zfs unallow projectused
zfs unallow projectobjused

chattr +/-P
chattr -p project_id
lsattr -p

This patch also supports tree quota based on the project quota via
"zfs project" commands set as following:
zfs project [-d|-r] <file|directory ...>
zfs project -C [-k] [-r] <file|directory ...>
zfs project -c [-0] [-d|-r] [-p id] <file|directory ...>
zfs project [-p id] [-r] [-s] <file|directory ...>

For "df [-i] $DIR" command, if we set INHERIT (project ID) flag on
the $DIR, then the proejct [obj]quota and [obj]used values for the
$DIR's project ID will be shown as the total/free (avail) resource.
Keep the same behavior as EXT4/XFS does.

Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by  Ned Bass <bass6@llnl.gov>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Fan Yong <fan.yong@intel.com>
TEST_ZIMPORT_POOLS="zol-0.6.1 zol-0.6.2 master"
Change-Id: Ib4f0544602e03fb61fd46a849d7ba51a6005693c
Closes #6290
2018-02-13 14:54:54 -08:00
LOLi
c03f04708c 'zfs receive' fails with "dataset is busy"
Receiving an incremental stream after an interrupted "zfs receive -s"
fails with the message "dataset is busy": this is because we still have
the hidden clone ../%recv from the resumable receive.

Improve the error message suggesting the existence of a partially
complete resumable stream from "zfs receive -s" which can be either
aborted ("zfs receive -A") or resumed ("zfs send -t").

Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #7129 
Closes #7154
2018-02-12 12:28:59 -08:00
LOLi
a893627fac contrib/initramfs: add missing conf.d/zfs
When upgrading from the distribution-provided zfs-initramfs package on
root-on-zfs Ubuntu and Debian the system may fail to boot: this change
adds the missing initramfs configuration file.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #7158
2018-02-12 11:40:00 -08:00
sanjeevbagewadi
918dbe35b5 mmp should use a fixed tag for spa_config locks
mmp_write_uberblock() and mmp_write_done() should the same tag
for spa_config_locks.

Reviewed-by: Olaf Faaland <faaland1@llnl.gov>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Sanjeev Bagewadi <sanjeev.bagewadi@gmail.com>
Closes #6530 
Closes #7155
2018-02-12 11:30:38 -08:00
John Wren Kennedy
ba779f7f71 OpenZFS 9004 - Some ZFS tests used files removed with 32 bit kernel
Authored by: John Wren Kennedy <john.kennedy@delphix.com>
Reviewed by: Igor Kozhukhov <igor@dilos.org>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: George Melikov <mail@gmelikov.ru>
Approved by: Dan McDonald <danmcd@joyent.com>
Ported-by: Giuseppe Di Natale <dinatale2@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/9004
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/fafe9b241f
Closes #7149
2018-02-09 10:28:44 -08:00
Andriy Gapon
1334283225 OpenZFS 8520 - lzc_rollback
8520 lzc_rollback_to should support rolling back to origin
7198 libzfs should gracefully handle EINVAL from lzc_rollback

lzc_rollback_to() should support rolling back to a clone's origin.
The current checks in zfs_ioc_rollback() would not allow that
because the origin snapshot belongs to a different filesystem.
The overly restrictive check was in introduced in 7600, but it
was not a regression as none of the existing tools provided a
way to rollback to the origin.

Authored by: Andriy Gapon <avg@FreeBSD.org>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Dan McDonald <danmcd@joyent.com>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/8520
OpenZFS-issue: https://www.illumos.org/issues/7198
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/78a5a1a25a
Closes #7150
2018-02-09 10:27:58 -08:00
sanjeevbagewadi
cc63068e95 Handle zap_add() failures in mixed case mode
With "casesensitivity=mixed", zap_add() could fail when the number of
files/directories with the same name (varying in case) exceed the
capacity of the leaf node of a Fatzap. This results in a ASSERT()
failure as zfs_link_create() does not expect zap_add() to fail. The fix
is to handle these failures and rollback the transactions.

Reviewed by: Matt Ahrens <mahrens@delphix.com>
Reviewed-by: Chunwei Chen <david.chen@nutanix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Sanjeev Bagewadi <sanjeev.bagewadi@gmail.com>
Closes #7011 
Closes #7054
2018-02-09 10:15:53 -08:00
Chunwei Chen
eb9c4532dd Fix zdb -ed on objset for exported pool
zdb -ed on objset for exported pool would failed with:
  failed to own dataset 'qq/fs0': No such file or directory

The reason is that zdb pass objset name to spa_import, it uses that
name to create a spa. Later, when dmu_objset_own tries to lookup the spa
using real pool name, it can't find one.

We fix this by make sure we pass pool name rather than objset name to
spa_import.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Signed-off-by: Chunwei Chen <david.chen@nutanix.com>
Closes #7099
Closes #6464
2018-02-09 10:11:34 -08:00
Chunwei Chen
5e3bd0e684 Fix zdb -E segfault
SPA_MAXBLOCKSIZE is too large for stack.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Signed-off-by: Chunwei Chen <david.chen@nutanix.com>
Closes #7099
2018-02-09 10:11:19 -08:00
Chunwei Chen
950e17c215 Fix zdb -R decompression
There are some issues in the zdb -R decompression implementation.

The first is that ZLE can easily decompress non-ZLE streams. So we add
ZDB_NO_ZLE env to make zdb skip ZLE.

The second is the random bytes appended to pabd, pbuf2 stuff. This serve
no purpose at all, those bytes shouldn't be read during decompression
anyway. Instead, we randomize lbuf2, so that we can make sure
decompression fill exactly to lsize by bcmp lbuf and lbuf2.

The last one is the condition to detect fail is wrong.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Signed-off-by: Chunwei Chen <david.chen@nutanix.com>
Closes #7099
Closes #4984
2018-02-09 10:11:02 -08:00
Chunwei Chen
0c0b0ad48a Fix racy assignment of zcb.zcb_haderrors
zcb_haderrors will be modified in zdb_blkptr_done, which is
asynchronous. So we must move this assignment after zio_wait.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Signed-off-by: Chunwei Chen <david.chen@nutanix.com>
Closes #7099
2018-02-09 10:08:40 -08:00
Chunwei Chen
f108a49236 Fix zle_decompress out of bound access
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Signed-off-by: Chunwei Chen <david.chen@nutanix.com>
Closes #7099
2018-02-09 10:08:05 -08:00
Chunwei Chen
d3190c5f29 Fix zdb -c traverse stop on damaged objset root
If a corruption happens to be on a root block of an objset, zdb -c will
not correctly report the error, and it will not traverse the datasets
that come after. This is because traverse_visitbp, which does the
callback and reset error for TRAVERSE_HARD, is skipped when traversing
zil is failed in traverse_impl.

Here's example of what 'zdb -eLcc' command looks like on a pool with
damaged objset root:

== before patch:

Traversing all blocks to verify checksums ...

Error counts:

	errno  count
block traversal size 379392 != alloc 33987072 (unreachable 33607680)

	bp count:             172
	ganged count:           0
	bp logical:       1678336      avg:   9757
	bp physical:       130560      avg:    759     compression:  12.85
	bp allocated:      379392      avg:   2205     compression:   4.42
	bp deduped:             0    ref>1:      0   deduplication:   1.00
	SPA allocated:   33987072     used:  0.80%

	additional, non-pointer bps of type 0:         71
	Dittoed blocks on same vdev: 101

== after patch:

Traversing all blocks to verify checksums ...

zdb_blkptr_cb: Got error 52 reading <54, 0, -1, 0>  -- skipping

Error counts:

	errno  count
	   52  1
block traversal size 33963520 != alloc 33987072 (unreachable 23552)

	bp count:             447
	ganged count:           0
	bp logical:      36093440      avg:  80745
	bp physical:     33699840      avg:  75391     compression:   1.07
	bp allocated:    33963520      avg:  75981     compression:   1.06
	bp deduped:             0    ref>1:      0   deduplication:   1.00
	SPA allocated:   33987072     used:  0.80%

	additional, non-pointer bps of type 0:         76
	Dittoed blocks on same vdev: 115

==

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Signed-off-by: Chunwei Chen <david.chen@nutanix.com>
Closes #7099
2018-02-09 10:05:25 -08:00
John Wren Kennedy
35e0202fd7 OpenZFS 8965 - zfs_acl_ls_001_pos fails due to no longer supported grep regex
The test used \> to detect the end of a string, but this no longer works,
so use $ which works as well since the string ends the line anyway.

Authored by: John Wren Kennedy <john.kennedy@delphix.com>
Reviewed by: Akash Ayare <aayare@delphix.com>
Reviewed by: Pavel Zakharov <pavel.zakharov@delphix.com>
Reviewed by: Yuri Pankov <yuripv@icloud.com>
Reviewed by: Igor Kozhukhov <igor@dilos.org>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Approved by: Dan McDonald <danmcd@joyent.com>
Ported-by: Giuseppe Di Natale <dinatale2@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/8965
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/cb1204e444
Closes #7145
2018-02-08 21:29:17 -08:00
Brian Behlendorf
f54976dc88 Linux 4.11 compat: avoid refcount_t name conflict
Related to commit 4859fe796, when directly using the kernel's
refcount functions in kernel compatibility code do not map
refcount_t to zfs_refcount_t.  This leads to a type mismatch.

Longer term we should consider renaming refcount_t to
zfs_refcount_t in the zfs code base.

Reviewed-by: Olaf Faaland <faaland1@llnl.gov>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Chunwei Chen <david.chen@nutanix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7148
2018-02-08 21:25:51 -08:00
Brian Behlendorf
18f57327e0 Linux 4.16 compat: inode_set_iversion()
A new interface was added to manipulate the version field of an
inode.  Add a inode_set_iversion() wrapper for older kernels and
use the new interface when available.

The i_version field was dropped from the trace point due to the
switch to an atomic64_t i_version type.

Reviewed-by: Olaf Faaland <faaland1@llnl.gov>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Chunwei Chen <david.chen@nutanix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7148
2018-02-08 21:25:19 -08:00
Serapheim Dimitropoulos
5b72a38d68 OpenZFS 8677 - Open-Context Channel Programs
Authored by: Serapheim Dimitropoulos <serapheim@delphix.com>
Reviewed by: Matt Ahrens <mahrens@delphix.com>
Reviewed by: Chris Williamson <chris.williamson@delphix.com>
Reviewed by: Pavel Zakharov <pavel.zakharov@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Ported-by: Don Brady <don.brady@delphix.com>

We want to be able to run channel programs outside of synching
context. This would greatly improve performance for channel programs
that just gather information, as they won't have to wait for synching
context anymore.

=== What is implemented?

This feature introduces the following:
- A new command line flag in "zfs program" to specify our intention
  to run in open context. (The -n option)
- A new flag/option within the channel program ioctl which selects
  the context.
- Appropriate error handling whenever we try a channel program in
  open-context that contains zfs.sync* expressions.
- Documentation for the new feature in the manual pages.

=== How do we handle zfs.sync functions in open context?

When such a function is found by the interpreter and we are running
in open context we abort the script and we spit out a descriptive
runtime error. For example, given the script below ...

arg = ...
fs = arg["argv"][1]
err = zfs.sync.destroy(fs)
msg = "destroying " .. fs .. " err=" .. err
return msg

if we run it in open context, we will get back the following error:

Channel program execution failed:
[string "channel program"]:3: running functions from the zfs.sync
submodule requires passing sync=TRUE to lzc_channel_program()
(i.e. do not specify the "-n" command line argument)
stack traceback:
            [C]: in function 'destroy'
            [string "channel program"]:3: in main chunk

=== What about testing?

We've introduced new wrappers for all channel program tests that
run each channel program as both (startard & open-context) and
expect the appropriate behavior depending on the program using
the zfs.sync module.

OpenZFS-issue: https://www.illumos.org/issues/8677
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/17a49e15
Closes #6558
2018-02-08 16:05:57 -08:00