Commit Graph

5571 Commits

Author SHA1 Message Date
Brian Behlendorf
b2030e5d51
Add zts-report.py to python shebang exclusion
Include zts-report.py is the __brp_mangle_shebangs_exclude_from
to resolve build failures in Fedora 28 and newer.

Reviewed-by: Giuseppe Di Natale <guss80@gmail.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #8020
Issue #7360
2018-10-15 16:59:28 -07:00
Matthew Ahrens
0aa5916a30
OpenZFS 9847 - leaking dd_clones (DMU_OT_DSL_CLONES) objects (#7979)
OpenZFS 9847 - leaking dd_clones (DMU_OT_DSL_CLONES) objects

We're leaking the dd_clones objects in dsl_dir_destroy_sync.  This bug
appears to have been around forever.  Thankfully the amount of space
typically involved is tiny.

In addition this adds a mechanism in ZDB to find objects in the MOS
which are leaked (not referenced anywhere).

Porting notes:
* Added dd_crypto_obj to ZDB MOS object leak tracking

Authored by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: George Wilson <george.wilson@delphix.com>
Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: Matthew Ahrens <mahrens@delphix.com>

OpenZFS-issue: https://illumos.org/issues/9847
Closes #7979
2018-10-12 11:28:26 -07:00
Brian Behlendorf
27f80e85c2 Improved error handling for extreme rewinds
The vdev_checkpoint_sm_object(), vdev_obsolete_sm_object(), and
vdev_obsolete_counts_are_precise() functions assume that the
only way a zap_lookup() can fail is if the requested entry is
missing.  While this is the most common cause, it's not the only
cause.  Attemping to access a damaged ZAP will result in other
errors.

The most likely scenario for accessing a damaged ZAP is during
an extreme rewind pool import.  Under these conditions the pool
is expected to contain damaged objects and the import code was
updated to handle this gracefully.  Getting an ECKSUM error from
these ZAPs after the pool in import a far less likely, therefore
the behavior for call paths was not modified.

Reviewed-by: Tim Chase <tim@chase2k.com>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Serapheim Dimitropoulos <serapheim.dimitro@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7809
Closes #7921
2018-10-12 11:24:04 -07:00
Brian Behlendorf
d6c745830f Revert "Allow ECKSUM in vdev_checkpoint_sm_object()"
This reverts commit e927fc8a52.

Reviewed by: Tim Chase <tim@chase2k.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Serapheim Dimitropoulos <serapheim.dimitro@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7921
2018-10-12 11:24:04 -07:00
Tony Hutter
3c94dd7b7b Define timestruc_t for Lustre compatibility
Lustre 2.8 (and possibly other versions) are still using timestruc_t,
which was removed in spl-0.7.10 in favor of inode_timespec_t.  Add
in a backwards compatibility #define for timestruc_t so that Lustre
builds.

Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #8014
2018-10-12 11:13:34 -07:00
Matt Ahrens
5d43cc9a59 OpenZFS 9689 - zfs range lock code should not be zpl-specific
The ZFS range locking code in zfs_rlock.c/h depends on ZPL-specific
data structures, specifically znode_t.  However, it's also used by
the ZVOL code, which uses a "dummy" znode_t to pass to the range
locking code.

We should clean this up so that the range locking code is generic
and can be used equally by ZPL and ZVOL, and also can be used by
future consumers that may need to run in userland (libzpool) as
well as the kernel.

Porting notes:
* Added missing sys/avl.h include to sys/zfs_rlock.h.
* Removed 'dbuf is within the locked range' ASSERTs from dmu_sync().
  This was needed because ztest does not yet use a locked_range_t.
* Removed "Approved by:" tag requirement from OpenZFS commit
  check to prevent needless warnings when integrating changes
  which has not been merged to illumos.
* Reverted free_list range lock changes which were originally
  needed to defer the cv_destroy() which was called immediately
  after cv_broadcast().  With d2733258 this should be safe but
  if not we may need to reintroduce this logic.
* Reverts: The following two commits were reverted and squashed in
  to this change in order to make it easier to apply OpenZFS 9689.
  - d88895a0, which removed the dummy znode from zvol_state
  - e3a07cd0, which updated ztest to use range locks
* Preserved optimized rangelock comparison function.  Preserved the
  rangelock free list.  The cv_destroy() function will block waiting
  for all processes in cv_wait() to be scheduled and drop their
  reference.  This is done to ensure it's safe to free the condition
  variable.  However, blocking while holding the rl->rl_lock mutex
  can result in a deadlock on Linux.  A free list is introduced to
  defer the cv_destroy() and kmem_free() until after the mutex is
  released.

Authored by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Serapheim Dimitropoulos <serapheim.dimitro@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Brad Lewis <brad.lewis@delphix.com>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://illumos.org/issues/9689
OpenZFS-commit: https://github.com/openzfs/openzfs/pull/680
External-issue: DLPX-58662
Closes #7980
2018-10-11 10:19:33 -07:00
Alek P
50a343d85c Fix changelist mounted-dataset iteration
Commit 0c6d093 caused a regression in the inherit codepath.
The fix is to restrict the changelist iteration on mountpoints and
add proper handling for 'legacy' mountpoints

Reviewed by: Serapheim Dimitropoulos <serapheim.dimitro@delphix.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alek Pinchuk <apinchuk@datto.com>
Closes #7988 
Closes #7991
2018-10-10 21:13:13 -07:00
Garrett Fields
5b3bfd86a4 Check scheduler for "noop" before setting "noop"
Originally code only checked for presence of "/sys/block/$i/queue/
scheduler".  "sh: write error: Invalid argument" was produced when
trying to set "noop" on certain devices (eg. virtio) when it isn't
a listed option. This modification continues to check for the presence
of "/sys/block/$i/queue/scheduler" and also checks that it contains
"noop" as an option before setting "noop".

Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Signed-off-by: Garrett Fields <ghfields@gmail.com>
Closes #8004
2018-10-10 08:46:22 -07:00
Tony Hutter
2ef0f8c329 Print "(repairing)" in zpool status again
Historically, zpool status prints "(repairing)" for any drives that
have errors during a scrub:

        NAME            STATE     READ WRITE CKSUM
        mypool          ONLINE       0     0     0
          mirror-0      ONLINE       0     0     0
            /tmp/file1  ONLINE      13     0     0  (repairing)
            /tmp/file2  ONLINE       0     0     0
            /tmp/file3  ONLINE       0     0     0

This was accidentally broken in "OpenZFS 9166 - zfs storage pool
checkpoint" (d2734cc).  This patch adds it back in.

Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #7779
Closes #7978
2018-10-09 20:30:32 -07:00
Paul Dagnelie
0391690583 Refactor dmu_recv into its own file
This change moves the bottom half of dmu_send.c (where the receive
logic is kept) into a new file, dmu_recv.c, and does similarly
for receive-related changes in header files.

Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Closes #7982
2018-10-09 14:05:13 -07:00
Brian Behlendorf
5e8ff25644 Fix arc_release() refcount
Update arc_release to use arc_buf_size().  This hunk was accidentally
dropped when porting compressed send/recv, 2aa34383b.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #8000
2018-10-09 10:10:26 -07:00
Brian Behlendorf
d7e4b30a67 Add zfs_refcount_transfer_ownership_many()
When debugging is enabled and a zfs_refcount_t contains multiple holders
using the same key, but different ref_counts, the wrong reference_t may
be transferred.  Add a zfs_refcount_transfer_ownership_many() function,
like the existing zfs_refcount_*_many() functions, to match and transfer
the correct refcount_t;

This issue may occur when using encryption with refcount debugging
enabled.  An arc_buf_hdr_t can have references for both the
hdr->b_l1hdr.b_pabd and hdr->b_crypt_hdr.b_rabd both of which use
the hdr as the reference holder.  When unsharing the buffer the
p_abd should be transferred.

This issue does not impact production builds because refcount holders
are not tracked.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7219
Closes #8000
2018-10-09 10:05:48 -07:00
Matthew Ahrens
4cbde2ecbf Create /proc/sys/kernel/spl/gitrev with git hash
The existing mechanisms for determining what code is running in the
kernel do not always correctly report the git hash.  The versions
reported there do not reflect changes made since `configure` was run
(i.e. incremental builds do not update the version) and they are
misleading if git tags are not set up properly.  This applies to
`modinfo zfs`, `dmesg`, and `/sys/module/zfs/version`.

There are complicated requirements on how the existing version is
generated.  Therefore we are leaving that alone, and adding a new
mechanism to record and retrieve the git hash:
`cat /proc/sys/kernel/spl/gitrev`

The gitrev is re-generated at compile time, when running `make`
(including for incremental builds).  The value is the output of `git
describe` (or "unknown" if not in a git repo or there are uncommitted
changes).

We're also removing /proc/sys/kernel/spl/version, which was never very
useful.

Reviewed by: Pavel Zakharov <pavel.zakharov@delphix.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Tim Chase <tim@chase2k.com>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes #7931 
Closes #7965
2018-10-08 21:57:02 -07:00
Matthew Ahrens
dfbe267503 OpenZFS 9617 - too-frequent TXG sync causes excessive write inflation
Porting notes:
* Renamed zfs_dirty_data_sync_pct to zfs_dirty_data_sync_percent and
  changed the type to be consistent with the other dirty module params.
* Updated zfs-module-parameters.5 accordingly.

Authored by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Serapheim Dimitropoulos <serapheim.dimitro@delphix.com>
Reviewed by: Brad Lewis <brad.lewis@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Andrew Stormont <andyjstormont@gmail.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Approved by: Robert Mustacchi <rm@joyent.com>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://illumos.org/issues/9617
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/7928f4ba
Closes #7976
2018-10-04 13:13:28 -07:00
Matthew Ahrens
58c0f374f1 Warn if checking programs are not installed
`make checkstyle` silently skips checks if the required programs are not
installed (e.g. shellcheck, mandoc).  Therefore developers may not
realize that they are not getting the full suite of code checks.  This
also applies to more specific targets like `make shellcheck`.

We should print a warning message when a check is skipped due to missing
tools.

Reviewed-by: Giuseppe Di Natale <guss80@gmail.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Pavel Zakharov <pavel.zakharov@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes #7984
2018-10-04 13:11:45 -07:00
Matthew Ahrens
c23f8d4829 Add codecheck make target
We'd like to have tooling that verifies code style, while ignoring the
commit message.  For example, code does not need to be signed off in
order to be tested.  Current workarounds are to run `git checkstyle` and
ignore the commit message errors, or to run `make cstyle shellcheck
flake8 mancheck testscheck`, and make sure that list stays updated.

Solution is to add a new make target, `codecheck` which does all the
code checks.  `checkstyle` is now simply `codecheck` + `commitcheck`.

Reviewed-by: Giuseppe Di Natale <guss80@gmail.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Pavel Zakharov <pavel.zakharov@delphix.com>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes #7985
2018-10-04 13:10:10 -07:00
Paul Dagnelie
6e8b268875 Fix ASSERT macros to not over-expand
The code reuse in the definitions of the ASSERT and VERIFY macros result
in expansion of their arguments before they are stringified, which
produces ugly and undesirable output.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Closes #7884
2018-10-03 20:16:45 -07:00
Paul Dagnelie
95542372e6 Add new fnvlist_lookup_* functions
Reviewed by: Serapheim Dimitropoulos <serapheim.dimitro@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Closes #7977
2018-10-03 15:30:55 -07:00
Prakash Surya
54eb2c410e Verify 'zfs destroy' will unshare the dataset
This change adds a new test case to the zfs-test suite to verify that
when 'zfs destroy' is used on a shared dataset, the dataset will be
unshared after the destroy operation completes.

Reviewed by: loli10K <ezomori.nozomu@gmail.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Prakash Surya <prakash.surya@delphix.com>
Closes #7941
2018-10-03 10:17:58 -07:00
Prakash Surya
1bf490ba93 Fix "zfs destroy" when "sharenfs=on" is used
When using "zfs destroy" on a dataset that is using "sharenfs=on" and
has been automatically exported (by libzfs), the dataset will not be
automatically unexported as it should be. This workflow appears to have
been broken by this commit: 3fd3e56cfd

In that change, the "zfs_unmount" function was modified to use the
"mnt.mnt_special" field when determining the mount point that is being
unmounted, rather than "mnt.mnt_mountp".

As a result, when "mntpt" is passed into "zfs_unshare_proto", it's value
is now the dataset name rather than the mountpoint. Thus, when this
value is used with the "is_shared" function (via "zfs_unshare_proto") it
will not find a match (since that function assumes it'll be passed the
mountpoint) and incorrectly reports that the dataset is not shared.

This can be easily reproduced with the following commands:

    $ sudo zpool create tank xvdb
    $ sudo zfs create -o sharenfs=on tank/fish
    $ sudo zfs destroy tank/fish

    $ sudo zfs list -r tank
    NAME   USED  AVAIL  REFER  MOUNTPOINT
    tank  97.5K  7.27G    24K  /tank

    $ sudo exportfs
    /tank/fish      <world>
    $ sudo cat /etc/dfs/sharetab
    /tank/fish      -       nfs     rw,crossmnt

At this point, the "tank/fish" filesystem doesn't exist, but it's still
listed as exported when looking at "exportfs" and "/etc/dfs/sharetab".

Also note, this change brings us back in-sync with the illumos code, as
it pertains to this one line; on illumos, "mnt.mnt_mountp" is used.

Reviewed by: loli10K <ezomori.nozomu@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Co-authored-by: George Wilson <george.wilson@delphix.com>
Signed-off-by: Prakash Surya <prakash.surya@delphix.com>
Issue #6143
Closes #7941
2018-10-03 10:17:58 -07:00
Brad Lewis
c955398b52 OpenZFS 9677 - panic from zio_write_gang_block()
Panic from zio_write_gang_block() when creating dump device
on fragmented rpool.

Authored by: Brad Lewis <brad.lewis@delphix.com>
Reviewed by: Matt Ahrens <matt@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Prashanth Sreenivasa <pks@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Ported-by: Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://illumos.org/issues/9677
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/7341a7d
Closes #7975
2018-10-03 09:50:06 -07:00
Andrew Stormont
84ddd4b062 OpenZFS 9616 - Bogus error when attempting to set property on read-only pool
Authored by: Andrew Stormont <astormont@racktopsystems.com>
Reviewed by: Paul Dagnelie <pcd@delphix.com>
Reviewed by: Matt Ahrens <matt@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://illumos.org/issues/9616
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/f62db44d
Closes #7974
2018-10-03 09:49:30 -07:00
Tom Caputi
52ce99dd61 Refcounted DSL Crypto Key Mappings
Since native ZFS encryption was merged, we have been fighting
against a series of bugs that come down to the same problem: Key
mappings (which must be present during all I/O operations) are
created and destroyed based on dataset ownership, but I/Os can
have traditionally been allowed to "leak" into the next txg after
the dataset is disowned.

In the past we have attempted to solve this problem by trying to
ensure that datasets are disowned ater all I/O is finished by
calling txg_wait_synced(), but we have repeatedly found edge cases
that need to be squashed and code paths that might incur a high
number of txg syncs. This patch attempts to resolve this issue
differently, by adding a reference to the key mapping for each txg
it is dirtied in. By doing so, we can remove many of the
unnecessary calls to txg_wait_synced() we have added in the past
and ensure we don't need to deal with this problem in the future.

Reviewed-by: Jorgen Lundman <lundman@lundman.net>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #7949
2018-10-03 09:47:11 -07:00
Jerry Jelinek
f65fbee1e7 OpenZFS 9700 - ZFS resilvered mirror does not balance reads
Authored by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Toomas Soome <tsoome@me.com>
Reviewed by: Sanjay Nadkarni <sanjay.nadkarni@nexenta.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Approved by: Matthew Ahrens <mahrens@delphix.com>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://illumos.org/issues/9700
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/82f63c3c
Closes #7973
2018-10-02 16:18:24 -07:00
Yuri Pankov
cb110f254e OpenZFS 9763 - zfs(1M): broken formatting in allow/unallow description
Porting notes:
* Two of the three changes from the upstream patch were already
  applied for Linux.  Only the last one is required.

Authored by: Yuri Pankov <yuri.pankov@nexenta.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Approved by: Gordon Ross <gwr@nexenta.com>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://illumos.org/issues/9763
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/8a702e55
Closes #7972
2018-10-02 16:12:54 -07:00
Alek P
0c6d09361d changelist should be able to iter on mounts
Modified changelist_gather()ing for the mountpoint property.
Now instead of iterating on all dataset descendants, we read
/proc/self/mounts and iterate on the mounted descendant datasets only.

Switched changelist implementation from a uu_list_* to uu_avl_* in
order to  reduce changlist code-path's worst case time complexity.

Reviewed by: Don Brady <don.brady@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alek Pinchuk <apinchuk@datto.com>
Closes #7967
2018-10-02 12:30:58 -07:00
Brian Behlendorf
838bd5ff35
ZTS: Fix snapshot_009_pos, snapshot_010_pos
Mitigate the likelihood of the newly created volumes being busy
when the 'zfs destroy -r' is issued by waiting for udev to settle.
Since this is not a iron clad fix I've added the test case to
the known list of possible failures and referenced issue #7961.

Finally, in the case this test does fail fix the cleanup logic
so subsequent tests won't incorrectly fail.

Reviewed-by: Giuseppe Di Natale <guss80@gmail.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7961 
Closes #7962
2018-10-01 17:15:57 -07:00
Tim Schumacher
424fd7c3e0 Prefix all refcount functions with zfs_
Recent changes in the Linux kernel made it necessary to prefix
the refcount_add() function with zfs_ due to a name collision.

To bring the other functions in line with that and to avoid future
collisions, prefix the other refcount functions as well.

Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tim Schumacher <timschumi@gmx.de>
Closes #7963
2018-10-01 10:42:05 -07:00
Matthew Ahrens
fc23d59fa0 Remove duplicate macro in dsl_dir.h
The DD_FIELD_LAST_REMAP_TXG macro was added twice (with the same value).
This change removes one of them.

Reviewed-by: Giuseppe Di Natale <guss80@gmail.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
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: Matthew Ahrens <mahrens@delphix.com>
Closes #7968
2018-10-01 10:40:11 -07:00
Brian Behlendorf
1258bd778e
Refine split block reconstruction
Due to a flaw in 4589f3ae the number of unique combinations
could be calculated incorrectly.  This could result in the
random combinations reconstruction being used when it would
have been possible to check all combinations.

This change fixes the unique combinations calculation and
simplifies the reconstruction logic by maintaining a per-
segment list of unique copies.

The vdev_indirect_splits_damage() function was introduced
to validate both the enumeration and random reconstruction
logic with ztest.  It is implemented such it will never
make a known recoverable block unrecoverable.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #6900 
Closes #7934
2018-10-01 10:36:34 -07:00
John Gallagher
d12614521a Fixes for procfs files backed by linked lists
There are some issues with the way the seq_file interface is implemented
for kstats backed by linked lists (zfs_dbgmsgs and certain per-pool
debugging info):

* We don't account for the fact that seq_file sometimes visits a node
  multiple times, which results in missing messages when read through
  procfs.
* We don't keep separate state for each reader of a file, so concurrent
  readers will receive incorrect results.
* We don't account for the fact that entries may have been removed from
  the list between read syscalls, so reading from these files in procfs
  can cause the system to crash.

This change fixes these issues and adds procfs_list, a wrapper around a
linked list which abstracts away the details of implementing the
seq_file interface for a list and exposing the contents of the list
through procfs.

Reviewed by: Don Brady <don.brady@delphix.com>
Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Reviewed by: Brad Lewis <brad.lewis@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: John Gallagher <john.gallagher@delphix.com>
External-issue: LX-1211
Closes #7819
2018-09-26 11:08:12 -07:00
Gregor Kopka
3ed2fbcc1c Fix flake 8 style warnings
Ran zts-report.py and test-runner.py from ./tests/test-runner/bin/
through the 2to3 (https://docs.python.org/2/library/2to3.html).
Checked the result, fixed:
- 'maxint' -> 'maxsize' that 2to3 missed.
- 'cmp=' parameter for a 'sorted()' with a 'key=' version.
- try/except wrapping of configparser import as there are still
  python 2.7 systems that lack a compatibility shim

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Gregor Kopka <gregor@kopka.net>
Closes #7925 
Closes #7952
2018-09-26 11:02:26 -07:00
Tim Schumacher
c13060e478 Linux 4.19-rc3+ compat: Remove refcount_t compat
torvalds/linux@59b57717f ("blkcg: delay blkg destruction until
after writeback has finished") added a refcount_t to the blkcg
structure. Due to the refcount_t compatibility code, zfs_refcount_t
was used by mistake.

Resolve this by removing the compatibility code and replacing the
occurrences of refcount_t with zfs_refcount_t.

Reviewed-by: Franz Pletz <fpletz@fnordicwalking.de>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tim Schumacher <timschumi@gmx.de>
Closes #7885 
Closes #7932
2018-09-26 10:29:26 -07:00
Brian Behlendorf
7a23c81342
Fix small sysfs leak
When zfs_kobj_init() is called with an attr_cnt of 0 only the
kobj->zko_default_attrs is allocated.  It subsequently won't
get freed in zfs_kobj_release since the free is wrapped in
a kobj->zko_attr_count != 0 conditional.

Split the block in zfs_kobj_release() to make sure the
kobj->zko_default_attrs are freed in this case.

Additionally, fix a minor spelling mistake and typo in
zfs_kobj_init() which could also cause a leak but in practice
is almost certain not to fail.

Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed-by: Tim Chase <tim@chase2k.com>
Reviewed-by: John Gallagher <john.gallagher@delphix.com>
Reviewed-by: Don Brady <don.brady@delphix.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7957
2018-09-26 09:50:58 -07:00
Gregor Kopka
b954e36e51 Zpool iostat: remove latency/queue scaling
Bandwidth and iops are average per second while *_wait are averages
per request for latency or, for queue depths, an instantaneous
measurement at the end of an interval (according to man zpool).

When calculating the first two it makes sense to do
x/interval_duration (x being the increase in total bytes or number of
requests over the duration of the interval, interval_duration in
seconds) to 'scale' from amount/interval_duration to amount/second.

But applying the same math for the latter (*_wait latencies/queue) is
wrong as there is no interval_duration component in the values (these
are time/requests to get to average_time/request or already an
absulute number).

This bug leads to the only correct continuous *_wait figures for both
latencies and queue depths from 'zpool iostat -l/q' being with
duration=1 as then the wrong math cancels itself (x/1 is a nop).

This removes temporal scaling from latency and queue depth figures.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Gregor Kopka <gregor@kopka.net>
Closes #7945 
Closes #7694
2018-09-25 16:29:16 -07:00
Brian Behlendorf
a7165d7255 Revert "Fix flake 8 style warnings"
This reverts commit b8fd4310c5 which
accidentally introduced a regression for some versions of python.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #7929
2018-09-24 17:20:42 -07:00
Brian Behlendorf
e897a23eb1
Fix statfs(2) for 32-bit user space
When handling a 32-bit statfs() system call the returned fields,
although 64-bit in the kernel, must be limited to 32-bits or an
EOVERFLOW error will be returned.

This is less of an issue for block counts since the default
reported block size in 128KiB. But since it is possible to
set a smaller block size, these values will be scaled as
needed to fit in a 32-bit unsigned long.

Unlike most other filesystems the total possible file counts
are more likely to overflow because they are calculated based
on the available free space in the pool. In order to prevent
this the reported value must be capped at 2^32-1. This is
only for statfs(2) reporting, there are no changes to the
internal ZFS limits.

Reviewed-by: Andreas Dilger <andreas.dilger@whamcloud.com>
Reviewed-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #7927 
Closes #7122 
Closes #7937
2018-09-24 17:11:25 -07:00
LOLi
36e369ecb8 ZTS: Fix removal_resume_export
This change simplify the test case removing part of the logic which was
introducing a race condition and thus causing spurious failures: we use
attempt_during_removal() from removal.kshlib instead which has been
observed to be more stable.

Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #7894 
Closes #7913
2018-09-24 12:58:16 -07:00
Gregor Kopka
b8fd4310c5 Fix flake 8 style warnings
Ran zts-report.py and test-runner.py from ./tests/test-runner/bin/
through the 2to3 (https://docs.python.org/2/library/2to3.html).
Checked the result, fixed:
- 'maxint' -> 'maxsize' that 2to3 missed.
- 'cmp=' parameter for a 'sorted()' with a 'key=' version.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: John Wren Kennedy <jwk404@gmail.com>
Signed-off-by: Gregor Kopka <gregor@kopka.net>
Closes #7925 
Closes #7929
2018-09-24 10:12:59 -07:00
LOLi
dda5500853 vdev_disk_error() prints ASCII SOH to debug log
Currently vdev_disk_error() prepends its messages sent to the internal
ZFS debug log with KERN_WARNING, which is currently defined as follows:

   #define KERN_SOH      "\001"
   #define KERN_WARNING  KERN_SOH "4"

Since "\001" (ASCII Start Of Header) is not printable this results in
weird characters displayed when inspecting the debug log. This commit
simply removes this superfluous prefix passed to zfs_dbgmsg().

Reviewed-by: Giuseppe Di Natale <guss80@gmail.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #7936
2018-09-21 09:42:42 -07:00
DeHackEd
9d489ab3a8 Fix reference to zpool-features(5)
Reviewed-by: Giuseppe Di Natale <guss80@gmail.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: DHE <git@dehacked.net>
Closes #7938
2018-09-21 09:41:08 -07:00
LOLi
7522a26077 Add limits to spa_slop_shift tunable
This change adds limits to the possible spa_slop_shift values set via
the sysfs interface. Accepted values are from a minimum of 1 to a
maximum of 31 (inclusive): these limits are based on the following
values observed on a 128PB file-vdev test pool:

spa_slop_shift=1, spa_get_slop_space=63.5PiB
spa_slop_shift=2, spa_get_slop_space=31.8PiB
spa_slop_shift=3, spa_get_slop_space=15.9PiB
spa_slop_shift=4, spa_get_slop_space=7.9PiB
spa_slop_shift=5, spa_get_slop_space=4PiB
spa_slop_shift=6, spa_get_slop_space=2PiB
...
spa_slop_shift=25, spa_get_slop_space=4GiB
spa_slop_shift=26, spa_get_slop_space=2GiB
spa_slop_shift=27, spa_get_slop_space=1016MiB
spa_slop_shift=28, spa_get_slop_space=508MiB
spa_slop_shift=29, spa_get_slop_space=254MiB
spa_slop_shift=30, spa_get_slop_space=128MiB
spa_slop_shift=31, spa_get_slop_space=128MiB
spa_slop_shift=32, spa_get_slop_space=128MiB

Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #7876 
Closes #7900
2018-09-20 21:10:12 -07:00
Richard Yao
145c88fb7b Add NEWS file
I received a request for a NEWS file. That needs to be handled by Tony
and Brian, but for now, we can at least provide one that provides a link
to github so that users who expect NEWS files from their packages will
know where to go for release information.

Reviewed-by: Neal Gompa <ngompa@datto.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <ryao@gentoo.org>
Closes #7918
2018-09-18 12:03:47 -07:00
LOLi
e0b7ff46c9 zstreamdump dumps core printing truncated nvlist
This change prevents zstreamdump from crashing when trying to print
invalid nvlist data (DRR_BEGIN record) from a truncated send stream.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #7917
2018-09-18 09:43:09 -07:00
DeHackEd
81155b296d Fix allocation_classes GUID in zpool-features(5)
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: DHE <git@dehacked.net>
Closes #7920
2018-09-18 08:59:47 -07:00
bunder2015
0ff15c2753 Add new wiki page to CONTRIBUTING
A new wiki page has been added for users who may be new to Git or
GitHub.  Adding link to CONTRIBUTING.

Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed-by: Gregor Kopka <gregor@kopka.net>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: bunder2015 <omfgbunder@gmail.com>
Closes #7923 
Closes #7915
2018-09-18 08:58:15 -07:00
Gregor Kopka
48b0b649fd Man page fixes - zpool/zfs optional parameters
The man pages for zpool and zfs (get command)
listed the pool/dataset parameter as required,
but these are optional. Fixed that.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Gregor Kopka <gregor@kopka.net>
Closes #7916
2018-09-18 08:55:33 -07:00
Brian Behlendorf
2ced3cf0b2
Clarify 'zpool remove' restrictions
Update zpool(8) to clarify what type of vdevs may be safely
removed and that the existence of any top-level raidz device
which is part of the primary pool will prevent device removal.

Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Tim Chase <tim@chase2k.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7880 
Closes #7893
2018-09-17 17:28:18 -07:00
LOLi
5140a58f3b zpool should detect invalid fs property on create
This change improve the handling of invalid filesystem properties when
specified at pool creation: this is useful when 'zpool create -n'
(dry run) is executed to detect invalid fs-level options (-O) before
the actual command is run.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #7620 
Closes #7878
2018-09-13 13:37:42 -07:00
Brian Behlendorf
92b432139d
Add removal_resume_export to zts-report.py
Add the removal_resume_export test case to the possible failure
section of the zts-report.py and reference the Github issue.  In
the CI environment this test has proven to be unreliable due to
the way it detects the removal thread.  This is a flaw in the test
and not device removal so update the result summary accordingly.

Additionally, increase the allowed timeout in an effort to reduce
the observed rate of false positves.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7895
Issue #7894
2018-09-13 13:35:09 -07:00