Commit Graph

4544 Commits

Author SHA1 Message Date
Rob Norris
b0bf14cdb5
abd: lift ABD zero scan from zio_compress_data() to abd_cmp_zero()
It's now the caller's responsibility do special handling for holes if
that's something it wants.

This also makes zio_compress_data() and zio_decompress_data() properly
the inverse of each other.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Jason Lee <jasonlee@lanl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16326
2024-08-09 14:30:26 -07:00
Alexander Motin
3ae05e34e5
Linux: Make zfs_prune() fair on NUMA systems
Previous code evicted nr_to_scan items from each NUMA node.  This
not only multiplied the eviction by the number of nodes, but could
exhaust the smaller ones, evicting inodes used by acive workload
and requiring their immediate recreation.  This patch spreads the
requested eviction between all NUMA nodes proportionally to their
evictable counts, which should be closer to expected LRU logic.
See kernel's super_cache_scan() as a similar logic example.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Closes #16397
2024-08-08 15:33:36 -07:00
Alexander Motin
5b9f3b7664
Soften pruning threshold on not evictable metadata
Previous code pruned 10% of dnodes once 3/4 of metadata appeared
unevictable.  On workloads with many millions of dnodes and little
other metadata it creates significant load spikes for many seconds
straight.  This change instead gradually increases pruning as
unevictable metadata grow above the 3/4, which may allow it to
stabilize at some level.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Closes #16401
2024-08-08 15:26:35 -07:00
Alexander Motin
aef452f108
Improve zfs_blkptr_verify()
- Skip config lock enter/exit for embedded blocks.  They have no
DVAs, so there is nothing to check under the lock.
 - Skip CHECKSUM check and properly check PSIZE for embedded blocks.
 - Add static branch predictions for unlikely conditions.
 - Do not verify DVAs for blocks already in ARC.  ARC hit already
"verified" the first (often the only) DVA, and it does not worth to
enter/exit config lock for nothing.

Some profiles show me up to 3% of CPU saving from this change.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Allan Jude <allan@klarasystems.com>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Closes #16387
2024-08-08 15:25:10 -07:00
Ameer Hamza
5536c0dee2
Sync AUX label during pool import
Spare and l2cache vdev labels are not updated during import. Therefore,
if disk paths are updated between pool export and import, the AUX label
still shows the old paths. This patch syncs the AUX label
during import to show the correct path information.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Umer Saleem <usaleem@ixsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #15817
2024-08-08 15:16:46 -07:00
Mark Johnston
dea8fabf73 FreeBSD: Fix RLIMIT_FSIZE handling for block cloning
ZFS implements copy_file_range(2) using block cloning when possible.
This implementation must respect the RLIMIT_FSIZE limit.

zfs_clone_range() already checks the limit, so it is safe to remove this
check in zfs_freebsd_copy_file_range().  Moreover, the removed check
produces false positives: the length passed to copy_file_range(2) may be
larger than the input file size; as the man page notes, "for best
performance, call copy_file_range() with the largest len value
possible."  In particular, some existing code passes SSIZE_MAX there.

The check in zfs_clone_range() clamps the length to the input file's
size before checking, but the removed check uses the caller supplied
length, so something like

$ echo a > /tmp/foo
$ limits -f 1024 cat /tmp/foo > /tmp/bar

fails because FreeBSD's cat(1) uses copy_file_range(2) in the manner
described above.

Reported-by: Philip Paeps <philip@FreeBSD.org>
Signed-off-by: Mark Johnston <markj@FreeBSD.org>

Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Allan Jude <allan@klarasystems.com>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
2024-08-08 10:43:02 -07:00
Rob Norris
670147be53 zvol: ensure device minors are properly cleaned up
Currently, if a minor is in use when we try to remove it, we'll skip it
and never come back to it again. Since the zvol state is hung off the
minor in the kernel, this can get us into weird situations if something
tries to use it after the removal fails. It's even worse at pool export,
as there's now a vestigial zvol state with no pool under it. It's
weirder again if the pool is subsequently reimported, as the zvol code
(reasonably) assumes the zvol state has been properly setup, when it's
actually left over from the previous import of the pool.

This commit attempts to tackle that by setting a flag on the zvol if its
minor can't be removed, and then checking that flag when a request is
made and rejecting it, thus stopping new work coming in.

The flag also causes a condvar to be signaled when the last client
finishes. For the case where a single minor is being removed (eg
changing volmode), it will wait for this signal before proceeding.
Meanwhile, when removing all minors, a background task is created for
each minor that couldn't be removed on the spot, and those tasks then
wake and clean up.

Since any new tasks are queued on to the pool's spa_zvol_taskq,
spa_export_common() will continue to wait at export until all minors are
removed.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #14872
Closes #16364
2024-08-06 12:08:14 -07:00
Rob Norris
88aab1d2d0 linux/zvol_os: fix SET_ERROR with negative return codes
SET_ERROR is our facility for tracking errors internally. The negation
is to match the what the kernel expects from us. Thus, the negation
should happen outside of the SET_ERROR.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16364
2024-08-06 12:07:31 -07:00
Rob Norris
6c82951d11
FreeBSD: remove support for FreeBSD < 13.0-RELEASE (#16372)
This includes the last 12.x release (now EOL) and 13.0 development
versions (<1300139).

Sponsored-by: https://despairlabs.com/sponsor/

Signed-off-by: Rob Norris <robn@despairlabs.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
2024-08-05 16:56:45 -07:00
Alexander Motin
cdd53fea1e FreeBSD: Add missing memory reclamation accounting
Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.

Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Umer Saleem <usaleem@ixsystems.com>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
2024-08-05 09:21:29 -07:00
Brian Atkinson
c8184d714b
Block cloning conditionally destroy ARC buffer
dmu_buf_will_clone() calls arc_buf_destroy() if there is an associated
ARC buffer with the dbuf. However, this can only be done conditionally.
If the previous dirty record's dr_data is pointed at db_dbf then
destroying it can lead to NULL pointer deference when syncing out the
previous dirty record.

This updates dmu_buf_fill_clone() to only call arc_buf_destroy() if the
previous dirty records dr_data is not pointing to db_buf. The block
clone wil still set the dbuf's db_buf and db_data to NULL, but this will
not cause any issues as any previous dirty record dr_data will still be
pointing at the ARC buffer.

Reviewed-by: Allan Jude <allan@klarasystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Brian Atkinson <batkinson@lanl.gov>
Closes #16337
2024-08-01 18:22:43 -07:00
Tino Reichardt
c092bddfe7
Fix sa.c to build on FreeBSD again. (#16403)
Fix multiple build errors on FreeBSD.

The main reason is, that the variable 'dxattr_obj' is used
uninitialized within the start of the 'out label'.

Signed-off-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
2024-08-01 13:04:08 -07:00
Jitendra Patidar
d60debbf59
Fix sa_add_projid to lookup and update SA_ZPL_DXATTR (avoid DXATTR loss) (#16288)
sa_add_projid() gets called via zfs_setattr() for setting project id
on old file/dir, which were created before upgrading to project quota
feature. This function does lookup for all possible SA and update them
all together along with project ID at needed fixed offset. But its
missing lookup and update of SA_ZPL_DXATTR, effectively it losses
SA_ZPL_DXATTR.

Closes #16287
Signed-off-by: Jitendra Patidar <jitendra.patidar@nutanix.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Rob Norris <rob.norris@klarasystems.com>
2024-07-31 18:41:49 -07:00
c1ick
ec580bc520
zfs: add bounds checking to zil_parse (#16308)
Make sure log record don't stray beyond valid memory region.

There is a lack of verification of the space occupied by fixed members
of lr_t in the zil_parse.

We can create a crafted image to trigger an out of bounds read by
following these steps:
    1) Do some file operations and reboot to simulate abnormal exit
       without umount
    2) zil_chain.zc_nused: 0x1000
    3) First lr_t
       lr_t.lrc_txtype: 0x0
       lr_t.lrc_reclen: 0x1000-0xb8-0x1
       lr_t.lrc_txg: 0x0
       lr_t.lrc_seq: 0x1
    4) Update checksum in zil_chain.zc_eck

Fix:
Add some checks to make sure the remaining bytes are large enough to
hold an log record.

Signed-off-by: XDTG <click1799@163.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
2024-07-31 17:17:04 -07:00
Alexander Motin
d4b5517ef9
Linux: Report reclaimable memory to kernel as such (#16385)
Linux provides SLAB_RECLAIM_ACCOUNT and __GFP_RECLAIMABLE flags to
mark memory allocations that can be freed via shinker calls.  It
should allow kernel to tune and group such allocations for lower
memory fragmentation and better reclamation under pressure.

This patch marks as reclaimable most of ARC memory, directly
evictable via ZFS shrinker, plus also dnode/znode/sa memory,
indirectly evictable via kernel's superblock shrinker.

Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Allan Jude <allan@klarasystems.com>
2024-07-30 11:40:47 -07:00
Rob Norris
d54d0fff39 dnode: allow storage class to be overridden by object type
spa_preferred_class() selects a storage class based on (among other
things) the DMU object type. This only works for old-style object types
that match only one specific kind of thing. For DMU_OTN_ types we need
another way to signal the storage class.

This commit allows the object type to be overridden in the IO policy for
the purposes of choosing a storage class. It then adds the ability to
set the storage type on a dnode hold, such that all writes generated
under that hold will get it.

This method has two shortcomings:

- it would be better if we could "name" a set of storage class
  preferences rather than it being implied by the object type.
- it would be better if this info were stored in the dnode on disk.

In the absence of those things, this seems like the smallest possible
change.

Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Sponsored-by: Klara, Inc.
Sponsored-by: iXsystems, Inc.
Closes #15894
2024-07-29 17:05:41 -07:00
Rob Norris
e26b3771ee spa_preferred_class: pass the entire zio
Rather than picking out specific values out of the properties, just pass
the entire zio in, to make it easier in the future to use more of that
info to decide on the storage class.

I would have rathered just pass io_prop in, but having spa.h include
zio.h gets a bit tricky.

Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Sponsored-by: Klara, Inc.
Sponsored-by: iXsystems, Inc.
Closes #15894
2024-07-29 17:05:08 -07:00
Alexander Motin
ed87d456e4 Skip dnode handles use when not needed
Neither FreeBSD nor Linux currently implement kmem_cache_set_move(),
which means dnode_move() is never called.  In such situation use of
dnode handles with respective locking to access dnode from dbuf is
a waste of time for no benefit.

This patch implements optional simplified code for such platforms,
saving at least 3 dnode lock/dereference/unlock per dbuf life cycle.
Originally I hoped to drop the handles completely to save memory,
but they are still used in dnodes allocation code, so left for now.

Before this change in CPU profiles of some workloads I saw 4-20% of
CPU time spent in zrl_add_impl()/zrl_remove(), which are gone now.

Reviewed-by: Rob Wing <rob.wing@klarasystems.com
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Allan Jude <allan@klarasystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by:  Alexander Motin <mav@FreeBSD.org>
Sponsored by:   iXsystems, Inc.
Closes #16374
2024-07-29 14:48:12 -07:00
Alexander Motin
1a3e32e6a2 Cleanup DB_DNODE() macros usage
- Use the macros in few places it was missed.
 - Reduce scope of DB_DNODE_ENTER/EXIT() and inline some DB_DNODE()
uses to make it more obvious what exactly is protected there and
make unprotected accesses by mistake more difficult.
 - Make use of zrl_owner().

Reviewed-by: Rob Wing <rob.wing@klarasystems.com
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Allan Jude <allan@klarasystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Closes #16374
2024-07-29 14:47:01 -07:00
Allan Jude
62e7d3c89e
ddt: add support for prefetching tables into the ARC
This change adds a new `zpool prefetch -t ddt $pool` command which
causes a pool's DDT to be loaded into the ARC. The primary goal is to
remove the need to "warm" a pool's cache before deduplication stops
slowing write performance. It may also provide a way to reload portions
of a DDT if they have been flushed due to inactivity.

Sponsored-by: iXsystems, Inc.
Sponsored-by: Catalogics, Inc.
Sponsored-by: Klara, Inc.
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Allan Jude <allan@klarasystems.com>
Signed-off-by: Will Andrews <will.andrews@klarasystems.com>
Signed-off-by: Fred Weigel <fred.weigel@klarasystems.com>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Signed-off-by: Don Brady <don.brady@klarasystems.com>
Co-authored-by: Will Andrews <will.andrews@klarasystems.com>
Co-authored-by: Don Brady <don.brady@klarasystems.com>
Closes #15890
2024-07-26 09:16:18 -07:00
Rob Norris
7ddc1f737f
zil: add stats for commit failure/fallback (#16315)
There's no good way to tell when a ZIL commit fails and falls back to a
transaction sync, other than perhaps a throughput drop. This adds
counters so we can see when it happens and why.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.

Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
2024-07-25 16:53:59 -07:00
Alexander Motin
55427add3c
Several improvements to ARC shrinking (#16197)
- When receiving memory pressure signal from OS be more strict
trying to free some memory.  Otherwise kernel may come again and
request much more.  Return as result how much arc_c was actually
reduced due to this request, that may be less than requested.
 - On Linux when receiving direct reclaim from some file system
(that may be ZFS) instead of ignoring request completely, just
shrink the ARC, but do not wait for eviction.  Waiting there may
cause deadlock.  Ignoring it as before may put extra pressure on
other caches and/or swap, and cause OOM if nothing help.  While
not waiting may result in more ARC evicted later, and may be too
late if OOM killer activate right now, but I hope it to be better
than doing nothing at all.
 - On Linux set arc_no_grow before waiting for reclaim, not after,
or it may grow back while we are waiting.
 - On Linux add new parameter zfs_arc_shrinker_seeks to balance
ARC eviction cost, relative to page cache and other subsystems.
 - Slightly update Linux arc_set_sys_free() math for new kernels.

Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Reviewed-by: Rob Norris <rob.norris@klarasystems.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
2024-07-25 10:31:14 -07:00
Allan Jude
c7ada64bb6
ddt: dedup table quota enforcement
This adds two new pool properties:
- dedup_table_size, the total size of all DDTs on the pool; and
- dedup_table_quota, the maximum possible size of all DDTs in the pool

When set, quota will be enforced by checking when a new entry is about
to be created. If the pool is over its dedup quota, the entry won't be
created, and the corresponding write will be converted to a regular
non-dedup write. Note that existing entries can be updated (ie their
refcounts changed), as that reuses the space rather than requiring more.

dedup_table_quota can be set to 'auto', which will set it based on the
size of the devices backing the "dedup" allocation device. This makes it
possible to limit the DDTs to the size of a dedup vdev only, such that
when the device fills, no new blocks are deduplicated.

Sponsored-by: iXsystems, Inc.
Sponsored-By: Klara Inc.
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Signed-off-by: Don Brady <don.brady@klarasystems.com>
Co-authored-by: Don Brady <don.brady@klarasystems.com>
Co-authored-by: Rob Wing <rob.wing@klarasystems.com>
Co-authored-by: Sean Eric Fagan <sean.fagan@klarasystems.com>
Closes #15889
2024-07-25 09:47:36 -07:00
Tony Hutter
a1be921673
Linux 6.9: Fix UBSAN errors in sa.c (#16380)
This is a follow-on to 156a64161b
that ignores UBSAN errors in sa.c.

Thank you @thwalker3 for the fix.

Original-patch-by: @thwalker3
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #16278
Closes #16330
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
2024-07-23 17:13:04 -07:00
Don Brady
fb6d8cf229
Add some missing vdev properties (#16346)
Sponsored-by: Klara, Inc.
Sponsored-By: Wasabi Technology, Inc.

Signed-off-by: Don Brady <don.brady@klarasystems.com>
Co-authored-by: Don Brady <don.brady@klarasystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
2024-07-23 16:34:09 -07:00
Chunwei Chen
9dfc5c4a0c
Fix long_free_dirty accounting for small files (#16264)
For files smaller than recordsize, it's most likely that they don't have
L1 blocks. However, current calculation will always return at least 1 L1
block.

In this change, we check dnode level to figure out if it has L1 blocks
or not, and return 0 if it doesn't. This will reduce the chance of
unnecessary throttling when deleting a large number of small files.

Signed-off-by: Chunwei Chen <david.chen@nutanix.com>
Co-authored-by: Chunwei Chen <david.chen@nutanix.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
2024-07-23 11:34:19 -07:00
Rob Norris
5de3ac2236 vdev_open: clear async fault flag after reopen
After c3f2f1aa2, vdev_fault_wanted is set on a vdev after a probe fails.
An end-of-txg async task is charged with actually faulting the vdev.

In a single-disk pool, the probe failure will degrade the last disk, and
then suspend the pool. However, vdev_fault_wanted is not cleared. After
the pool returns, the transaction finishes and the async task runs and
faults the vdev, which suspends the pool again.

The fix is simple: when reopening a vdev, clear the async fault flag. If
the vdev is still failed, the startup probe will quickly notice and
degrade/suspend it again. If not, all is well!

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Co-authored-by: Don Brady <don.brady@klarasystems.com>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Reviewed-by: Jorgen Lundman <lundman@lundman.net>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Don Brady <don.brady@klarasystems.com>
2024-07-17 10:03:41 -07:00
Jason Lee
41902c8e6d
Use kmap_local_page instead of kmap_atomic (#16329)
Changed zfs_k(un)map_atomic to zfs_k(un)map_local

Signed-off-by: Jason Lee <jasonlee@lanl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Atkinson <batkinson@lanl.gov>
2024-07-16 17:27:29 -07:00
Rob Norris
7ca7bb7fd7 Linux 5.16: use bdev_nr_bytes() to get device capacity
This helper was introduced long ago, in 5.16. Since 6.10, bd_inode no
longer exists, but the helper has been updated, so detect it and use it
in all versions where it is available.

Signed-off-by: Rob Norris <robn@despairlabs.com>
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
2024-07-15 17:10:06 -07:00
Rob Norris
e951dba48a Linux 6.10: work harder to avoid kmem_cache_alloc reuse
Linux 6.10 change kmem_cache_alloc to be a macro, rather than a
function, such that the old #undef for it in spl-kmem-cache.c would
remove its definition completely, breaking the build.

This inverts the model used before. Rather than always defining the
kmem_cache_* macro, then undefining then inside spl-kmem-cache.c,
instead we make a special tag to indicate we're currently inside
spl-kmem-cache.c, and not defining those in macros in the first place,
so we can use the kernel-supplied kmem_cache_* functions to implement
spl_kmem_cache_*, as we expect.

For all other callers, we create the macros as normal and remove access
to the kernel's own conflicting names.

Signed-off-by: Rob Norris <robn@despairlabs.com>
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
2024-07-15 17:10:02 -07:00
Rob Norris
b409892ae5 Linux 6.10: rework queue limits setup
Linux has started moving to a model where instead of applying block
queue limits through individual modification functions, a complete
limits structure is built up and applied atomically, either when the
block device or open, or some time afterwards. As of 6.10 this
transition appears only partly completed.

This commit matches that model within OpenZFS in a way that should work
for past and future kernels. We set up a queue limits structure with any
limits that have had their modification functions removed. For newer
kernels that can have limits applied at block device open
(HAVE_BLK_ALLOC_DISK_2ARG), we have a conversion function to turn the
OpenZFS queue limits structure into Linux's queue_limits structure,
which can then be passed in. For older kernels, we provide an
application function that just calls the old functions for each limit in
the structure.

Signed-off-by: Rob Norris <robn@despairlabs.com>
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
2024-07-15 17:09:55 -07:00
Mateusz Guzik
a7fc4c85e3
zstd: don't call zstd_mempool_reap if there are no buffers (#16302)
zfs_zstd_cache_reap_now is issued every second.

zstd_mempool_reap checks for both pool existence and buffer count, but
that's still 2 func calls which are trivially avoidable.

With clang it even avoids pushing the stack pointer (but still suffers
the mispredict due to a forward jump, not modified in case someone is
using zstd):

<+0>:     cmpq   $0x0,0x0(%rip)        # <zfs_zstd_cache_reap_now+8>
<+8>:     je     0x217de4 <zfs_zstd_cache_reap_now+36>
<+10>:    push   %rbp
<+11>:    mov    %rsp,%rbp
<+14>:    mov    0x0(%rip),%rdi        # <zfs_zstd_cache_reap_now+21>
<+21>:    call   0x217df0 <zstd_mempool_reap>
<+26>:    mov    0x0(%rip),%rdi        # <zfs_zstd_cache_reap_now+33>
<+33>:    pop    %rbp
<+34>:    jmp    0x217df0 <zstd_mempool_reap>
<+36>:    ret

Preferably the call would not be made to begin with if zstd is not used,
but this retains all the logic confined to zstd code.

Sponsored by:	Rubicon Communications, LLC ("Netgate")
Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Reviewed-by: Allan Jude <allan@klarasystems.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
2024-07-15 14:51:37 -07:00
George Amanakis
c87cb22ba9
head_errlog: fix use-after-free
In the commit of the head_errlog feature we introduced a bug in
dsl_dataset_promote_sync(): we may dereference origin_head and hds, both
dereferencing ddpa after calling promote_sync() on ddpa.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Chunwei Chen <david.chen@nutanix.com>
Reviewed-by: Rob Norris <robn@despairlabs.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: George Amanakis <gamanakis@gmail.com>
Closes #16272
Closes #16273
2024-07-15 09:05:42 -07:00
Mark Johnston
a10faf5ce6
FreeBSD: Use the new freeuio() helper to free dynamically allocated UIOs (#16300)
This freeuio() interface was introduced to FreeBSD recently.  For now
it simply calls free(), so this change has no effect.  However, this
may not always be true, and in CheriBSD this change is required.

Signed-off-by: Mark Johnston <markj@FreeBSD.org>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brooks Davis <brooks.davis@sri.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
2024-07-11 16:52:51 -07:00
Tony Hutter
156a64161b
Linux 6.9: Fix UBSAN errors in zap_micro.c
You can use the UBSAN_SANITIZE_* Kbuild options to exclude certain
kernel objects from the UBSAN checks.  We previously excluded
zap_micro.o with:

UBSAN_SANITIZE_zap_micro.o := n

For some reason that didn't work for the 6.9 kernel, which wants us
to use:

UBSAN_SANITIZE_zfs/zap_micro.o := n

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #16278
Closes #16330
2024-07-11 16:41:26 -07:00
Mark Johnston
4367312760
zvol: Fix suspend lock leaks (#16270)
In several functions, we use a flag variable to track whether
zv_suspend_lock is held.  This flag was not getting reset in a
particular case where we need to retry the underlying operation,
resulting in a lock leak.  Make sure to update the flag where necessary.

Signed-off-by: Mark Johnston <markj@FreeBSD.org>
Reviewed-by: Allan Jude <allan@klarasystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
2024-07-10 14:27:44 -07:00
Tony Hutter
49f3ce3385
Linux 6.9: Call add_disk() from workqueue to fix zfs_allow_010_pos (#16282)
The 6.9 kernel behaves differently in how it releases block devices.  In
the common case it will async release the device only after the return
to userspace.  This is different from the 6.8 and older kernels which
release the block devices synchronously.  To get around this, call
add_disk() from a workqueue so that the kernel uses a different
codepath to release our zvols in the way we expect.  This stops
zfs_allow_010_pos from hanging.

Fixes: #16089

Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Rob Norris <rob.norris@klarasystems.com>
2024-06-28 09:52:03 -07:00
Mateusz Guzik
121a2d3354
FreeBSD: unregister mountroot eventhandler on unload
Otherwise if zfs is unloaded and reroot is being used it trips over a
stale pointer.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Sponsored by:	Rubicon Communications, LLC ("Netgate")
Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Closes #16242
2024-06-13 17:49:50 -07:00
bnovkov
20c8bdd85e
FreeBSD: Update use of UMA-related symbols in arc_available_memory
Recent UMA changes repurposed the use of UMA_MD_SMALL_ALLOC in a way
that breaks arc_available_memory on -CURRENT. This change
ensures that arc_available_memory uses the new symbol
while maintaining compatibility with older FreeBSD releases.
    
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Bojan Novković <bnovkov@FreeBSD.org>
Closes #16230
2024-06-06 18:11:00 -07:00
Rob Norris
a72751a342 icp: remove redundant FreeBSD check
We don't build illumos-crypto for FreeBSD.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16209
2024-05-31 15:13:59 -07:00
Rob Norris
4e714c0be1 icp: remove unused headers
Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16209
2024-05-31 15:13:51 -07:00
Rob Norris
ae512620d0 icp: remove skein module
Nothing calls it through the KCF interface, so this is all unused.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16209
2024-05-31 15:13:39 -07:00
Rob Norris
f39241aeb3 icp: remove unused SHA2 HMAC mechanisms
Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16209
2024-05-31 15:13:30 -07:00
Rob Norris
10de12e9ed icp: reorganise SHA2 digest mechanisms
sha2_mech_type_t serves double-duty, as the list of MAC providers and
also the algo type for direct callers to SHA2Init. Until we disentangle
that, reorganise it to make the separation more clear. While we're
there, remove the digest mechs we don't use.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16209
2024-05-31 15:13:23 -07:00
Rob Norris
1291c46ea4 icp: remove digest entry points
For whatever reason, we call digest mechanisms directly, not through the
KCF digest provider. So we can remove those entry points entirely.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16209
2024-05-31 15:13:16 -07:00
Rob Norris
94f1e56e41 icp: remove unused KCF_ macros
Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16209
2024-05-31 15:13:06 -07:00
Rob Norris
4ed91dc26e icp: remove unusued incremental cipher methods
Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16209
2024-05-31 15:12:59 -07:00
Rob Norris
57249bcddc icp: brutally remove unused AES modes
Still retaining the struture, for now.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16209
2024-05-31 15:12:51 -07:00
Rob Norris
4185179190 icp: remove unused blowfish_ctx and des_ctx
Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16209
2024-05-31 15:12:31 -07:00
Zhenlei Huang
e2357561b9
FreeBSD: Add const qualifier to members of struct opensolaris_utsname
These members have directly references to the global variables
exposed by the kernel. They are not going to be changed by this
kernel module.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Zhenlei Huang <zlei@FreeBSD.org>
Closes #16210
2024-05-30 09:58:20 -07:00