Commit Graph

10492 Commits

Author SHA1 Message Date
Ameer Hamza
00d69b0f72 arc: remove unused l2df_size and l2df_type from l2arc_data_free_t
These fields became unused when ABD was introduced in a6255b7fc.

Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #18093
2026-02-04 10:07:26 -08:00
Ameer Hamza
6f17052743 cache_012_pos: disable compression to ensure L2ARC wrap
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #18093
2026-02-04 10:07:22 -08:00
Ameer Hamza
13552d754f ZTS: Add L2ARC DWPD and parallel writes tests
Add four new functional tests to validate L2ARC DWPD rate limiting and
parallel write features:

- l2arc_dwpd_ratelimit_pos: Verifies DWPD rate limiting with different
  values (0, 100, 1000, 10000) and ordering
- l2arc_dwpd_reimport_pos: Verifies DWPD rate limiting persists after
  pool export/import
- l2arc_multidev_scaling_pos: Verifies parallel write scaling ratio
  (dual devices achieve ~2× single device throughput)
- l2arc_multidev_throughput_pos: Verifies absolute parallel write
  throughput scales with device count (~32MB/s per device)

Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #18093
2026-02-04 10:07:16 -08:00
Ameer Hamza
48d3f7fac9 man: Update L2ARC tunables for DWPD and parallel writes
Add l2arc_dwpd_limit, remove l2arc_write_boost, update related tunables.

Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #18093
2026-02-04 10:07:11 -08:00
Ameer Hamza
d1f290f1ea L2ARC: Implement DWPD-based rate limiting with adaptive feed intervals
Add DWPD (Drive Writes Per Day) rate limiting to control L2ARC write
speeds and protect SSD endurance. Write rate is constrained by the
minimum of l2arc_write_max and DWPD-calculated budget. Devices
accumulate unused write budget over 24-hour periods with automatic reset
and carry-over. Writes occur in controlled bursts (max 50MB) with
adaptive intervals to achieve target rates. Applies after initial device
fill.

Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #18093
2026-02-04 10:07:07 -08:00
Ameer Hamza
b525525b44 L2ARC: Implement per-device feed threads for parallel writes
Transform L2ARC from single global feed thread to per-device threads,
enabling parallel writes to multiple L2ARC devices. Each device runs
its own feed thread independently, improving multi-device throughput.
Previously, a single thread served all devices sequentially; now each
device writes concurrently. Threads are created during device addition
and torn down on removal.

Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #18093
2026-02-04 10:07:02 -08:00
Ameer Hamza
825dc41ad4 L2ARC: Preserve L2HDR in arc_release() for in-flight writes
When arc_release() is called on a header with a single buffer and
L2_WRITING set, the L2HDR must be preserved for ABD cleanup (similar
to the arc_hdr_destroy() case). If we destroy the L2HDR here, later
arc_write() will allocate a new ABD and call arc_hdr_free_abd(),
which needs b_l2hdr.b_dev to properly defer ABD cleanup, causing
VERIFY(HDR_HAS_L2HDR(hdr)) to fail.

Allocate a new header for the buffer in the single_buf_l2writing
case (single buffer + L2_WRITING), leaving the original header with
L2HDR intact. The original header becomes an "orphan" (no buffers, no
b_pabd) but retains device association for ABD cleanup when
l2arc_write_done() completes.

The shared buffer case (HDR_SHARED_DATA) is excluded because L2ARC
makes its own transformed copy via l2arc_apply_transforms(), so the
original ABD is not used by the L2 write. The header can be safely
reused without allocating a new one.

For proper evictable space accounting, arc_buf_remove() must be
called before remove_reference() in the single_buf_l2writing path.
This ensures arc_evictable_space_increment() (during remove_reference)
and arc_evictable_space_decrement() (during destruction) see the
same state (b_buf=NULL), preventing accounting leaks that cause
module unload to hang with non-zero esize.

Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #18093
2026-02-04 10:06:57 -08:00
Ameer Hamza
b8610c3d93 L2ARC: Reorder header destruction for in-flight L2 writes
With multiple L2ARC devices, headers can be destroyed asynchronously
(e.g., during zpool sync) while L2_WRITING is set. The original code
destroyed L2HDR before L1HDR, causing ABDs to lose their device
association (b_l2hdr.b_dev) when arc_hdr_free_abd() is called.

This caused ABDs to be added to the global free-on-write list without
device information. When any L2ARC device completed its write and
attempted to free these orphaned ABDs, it would panic on
ASSERT(!list_link_active(&abd->abd_gang_link)) because the ABD was
still part of another device's vdev_queue I/O aggregation gang.

Fix by extending l2ad_mtx lock scope to cover L1HDR destruction and
reordering to destroy L1HDR before L2HDR when L2_WRITING is set. This
ensures arc_hdr_free_abd() can access b_l2hdr.b_dev to properly tag
ABDs with their device for deferred cleanup.

Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #18093
2026-02-04 10:06:51 -08:00
Ameer Hamza
2f41b9d865 L2ARC: Implement persistent markers with consistent tail scanning
This commit introduces per-sublist persistent markers that eliminate
redundant tail scanning between L2ARC iterations, providing significant
CPU efficiency improvements. Markers are pre-allocated during device
initialization and properly cleaned up during device removal.

The implementation uses conditional behavior based on device capacity:
small devices (capacity < arc_c) retain original HEAD/TAIL scanning
based on ARC warmup state, while large devices (capacity >= arc_c)
use the persistent marker approach for optimal CPU efficiency.

Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #18093
2026-02-04 10:06:47 -08:00
Ameer Hamza
3523b5f3f9 L2ARC: Implement even-depth multi-sublist scanning
The introduction of ARC multilists made L2ARC writing quite random,
depending on whether it found something to write in a randomly selected
sublist. This created inconsistent write patterns and poor utilization
of available sublists leading to uneven cache population.

This commit replaces random selection with systematic scanning across
all sublists within each burst. Fair headroom distribution ensures
even-depth traversal across all sublists until the target write size
is reached. Round-robin processing with random starting points eliminates
sequential bias while maintaining predictable write behavior.

The systematic approach provides consistent L2ARC filling patterns
and better utilization of available ARC data across all sublists.

Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #18093
2026-02-04 10:05:53 -08:00
Dennis Værum
07ae463d1a
Added support for multiple homes in pam_zfs_key module (#18084)
This implemented support for having multiple datasets unlocked and
mounted when a session is opened.
Example: `homes=rpool/home,tank/users`

Extra unit tests have been added

A man page documents have been added `man 8 pam_zfs_key`. A few
references to the new man page have also been added in other documents.

Signed-off-by: Dennis Vestergaard Værum <github@varum.dk>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
2026-02-03 16:09:10 -08:00
Erik Larsson
7e33476a7c
Fix build for Linux 6.18 with PowerPC/RISC-V kernels. (#18145)
The macro 'flush_dcache_page(...)' modifies the page flags, but in Linux
6.18 the type of the page flags changed from 'unsigned long' to the
struct type 'memdesc_flags_t' with a single member 'f' which is the page
flags field.

Signed-off-by: Erik Larsson <catacombae@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
2026-02-02 14:16:10 -08:00
John Cabaj
13601e2d24
Linux 6.19: handle --werror with CONFIG_OBJTOOL_WERROR=y
Linux upstream commit 56754f0f46f6: "objtool: Rename
--Werror to --werror" did just that, so we should check for
either "--Werror" or "--werror", else the build will fail

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Attila Fülöp <attila@fueloep.org>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: John Cabaj <john.cabaj@canonical.com>
Closes #18152
2026-02-02 10:19:18 -08:00
Tony Hutter
da9e8ff0df
CI: Fix qemu-1-setup failure, remove debug stuff
- For whatever reason, the runner will now startup with either two 75GB
  disks or one 150GB disk.  Previously the runner was always booting
  with two 75GB, but about a quarter of the time it now starts up
  with a single 150GB disk.  This caused qemu-1-setup.sh to fail
  since it expected the two 75GB disks.  This commit updates
  qemu-1-setup.sh to work with either disk config.

- Remove the watchdog from qemu-1-setup.sh.  It didn't turn out to be
  useful.

- Remove the timestamps that zfs-qemu.yml added to the qemu-1-setup.sh
  output.  The timestamps were redundant, since you can already
  download timestamped logs from the Github web interface.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #18166
2026-01-31 12:40:55 -08:00
Brooks Davis
b364720524
nvpair: chase FreeBSD xdrproc_t definition
As of FreeBSD 16, xdrproc_t will take exactly two arguments in both
kernel and userspace in line with the Linux kernel.

Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Alan Somers <asomers@freebsd.org>
Signed-off-by:	Brooks Davis <brooks@capabilitieslimited.co.uk>
Closes #18154
2026-01-28 21:41:33 -05:00
Mariusz Zaborski
a157ef62a1
Make sure we can still write data to txg
The final txgs are used only to clear out any remaining deferred
frees, and we cannot write new data to them. Make sure we do not
try to do so.

Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Mariusz Zaborski <mariusz.zaborski@klarasystems.com>
Closes #18139
2026-01-26 21:33:21 -05:00
Alexander Motin
35b2d39709
Lock db_mtx around arc_release() in couple places
* Lock db_mtx around arc_release() in dbuf_release_bp()

While this function is called only in sync context, the same buffer
can be touched by dbuf_hold_impl() in open context, creating races.
All other accesses to arc_release() are already protected by db_mtx,
so just take it here too.

Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com>

* Lock db_mtx in sa_byteswap()

While SA code seems protected by sa_lock, there is a back door of
dmu_objset_userquota_get_ids(), that may hold and access the dbuf
without sa_lock, relying only on db_mtx. Taking db_mtx here should
protect both the arc_release() and the data for db_buf.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com>
Closes #18146
2026-01-26 21:32:16 -05:00
Alek P
cd895f0e57
remove thread unsafe debug code causing FreeBSD double free panic
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alan Somers <asomers@gmail.com>
Signed-off-by: Alek Pinchuk <apinchuk@axcient.com>
Closes #18140
2026-01-21 10:00:34 -08:00
Alexander Moch
28291536bc Zstd: Document update policy
Add the Zstd update policy to the subtree README.

Also update the documented location of zstd-in.c to match upstream
changes, and normalize naming from 'ZSTD' to 'Zstd'.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Moch <mail@alexmoch.com>
Closes #18089
2026-01-20 13:41:24 -08:00
Alexander Moch
2d5a9b6a4c Zstd: Restore SPDX license identifiers
When updating Zstandard to version 1.5.7 the SPDX license identifiers
were lost. This commit restores them.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Moch <mail@alexmoch.com>
Closes #18089
2026-01-20 13:41:18 -08:00
Alexander Moch
e7f9734bc7 Zstd: Fix ASan poisoning for pooled Zstd contexts
The Zstd context mempool can reuse buffers that were previously poisoned
under AddressSanitizer, leading to false-positive use-after-poison reports
during zloop and other stress tests.

Explicitly unpoison memory when handing buffers out to Zstd and poison the
user-visible region again when buffers are returned to the pool. This makes
the allocator ASan-correct while preserving existing pooling behavior.

Also fix non-standard void * pointer arithmetic in zstd_free() and remove an
early return in zstd_dctx_alloc() so kmem_type/kmem_size are always set on
pool hits.

This only affects ASan bookkeeping in user space, does not change runtime
behavior in non-ASan configurations, and does not affect on-disk formats.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Moch <mail@alexmoch.com>
Closes #18089
2026-01-20 13:41:12 -08:00
Alexander Moch
a2ac9cd606 Zstd: Integrate v1.5.7 into the ZFS build system
This commit builds on the previous zstd library update and adds the
necessary ZFS integration and build system changes required to make
zstd 1.5.7 compile and function correctly.

Changes:
- Add zstd_preSplit.c (new in 1.5.7) to all build systems.
- Enable x86_64 assembly in userspace (huf_decompress_amd64.S).
- Disable assembly in kernel for RETHUNK/IBT compatibility.
- Disable intrinsics in kernel for EL10 x86_64-v3 baseline.
- Disable tracing in kernel builds for AArch64 compatibility.
- Fix ZSTD_isError symbol renaming with __asm__ directive.
- Rename abs64 to ZSTD_abs64 (FreeBSD kernel conflict).
- Fix bitstream.h attributes (MEM_STATIC -> FORCE_INLINE_TEMPLATE).
- Remove xxhash.c from BSD build (now header-only).
- Update symbol names in zstd_compat_wrapper.h.
- Ignore checkstyle for zstd-in.c.

Kernel assembly disabled for security mitigation compatibility. User
space retains full performance.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Moch <mail@alexmoch.com>
Closes #18089
2026-01-20 13:41:06 -08:00
Alexander Moch
bbcddb127a Zstd: Update bundled library to v1.5.7 without further adjustments
This commit only replaces the bundled source and does not include any
ZFS integration changes. Because the build depends on integration
adjustments, it will fail until the accompanying integration commit is
applied.

Upstream release: https://github.com/facebook/zstd/releases/tag/v1.5.7

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Moch <mail@alexmoch.com>
Closes #18089
2026-01-20 13:40:37 -08:00
Mark Johnston
54b141fab5
FreeBSD: Remove references to DEBUG_VFS_LOCKS
This option is removed upstream in favour of plain INVARIANTS.

VNASSERT is always defined so I see no reason to use it conditionally.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Mark Johnston <markj@FreeBSD.org>
Closes #18136
2026-01-19 08:55:17 -08:00
Martin Matuška
8605bdfdda
FreeBSD: unbreak compilation on i386
tests/zfs-tests/cmd/mmap_seek.c: use correct printf specifier
module/zfs/vdev.c: vdev_clear(): correctly cast argument to
atomic_add_64().

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Martin Matuska <mm@FreeBSD.org>
Closes #18096
2026-01-14 17:02:41 -08:00
Alan Somers
3fffe4e707
Fix --enable-invariants on FreeBSD
The make symbols were never getting forwarded to the correct make
subprocess.  As far as I can tell, this has never worked.  Either that,
or something has changed in the behavior of make.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alan Somers <asomers@gmail.com>
Closes #18131
2026-01-14 14:54:12 -08:00
shuppy
09e4e01e93
Fix history logging for zpool create -t
`zpool create` is supposed to log the command to the new pool’s history,
as a special record that never gets evicted from the ring buffer. but
when you create a pool with `zpool create -t`, no such record is ever
logged (#18102). that bug may be the cause of issues like #16408.

`zpool create -t` (83e9986f6e) and `zpool
import -t` (26b42f3f9d) are both designed
to override the on-disk zpool property `name` with an in-core
“temporary” name, but they work somewhat differently under the hood.

importing with a temporary name sets `spa->spa_import_flags |=
ZFS_IMPORT_TEMP_NAME` in ZFS_IOC_POOL_IMPORT, which tells
spa_write_cachefile() and spa_config_generate() to use the
ZPOOL_CONFIG_POOL_NAME in `spa->spa_config` instead of `spa->spa_name`.

creating with a temporary name permanently(!) sets the internal zpool
property `tname` (ZPOOL_PROP_TNAME) in the `zc->zc_nvlist_src` of
ZFS_IOC_POOL_CREATE, which tells zfs_ioc_pool_create()
(4ceb8dd6fd) and spa_create() to use that
name instead of `zc->zc_name`, then sets `spa->spa_import_flags |=
ZFS_IMPORT_TEMP_NAME` like an import.

but zfsdev_ioctl_common() fails to check for `tname` when saving the
pool name to `zfs_allow_log_key`, so when we call ZFS_IOC_LOG_HISTORY,
we call spa_open() on the wrong pool name and get ENOENT, so the logging
silently fails.

this patch fixes #18102 by checking for `tname` in zfsdev_ioctl_common()
like we do in zfs_ioc_pool_create().

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: delan azabani <dazabani@igalia.com>
Closes #18118  
Closes #18102
2026-01-14 14:51:51 -08:00
Alexander Motin
765929cb4e
DDT: Add locking for table ZAP destruction
Similar to BRT, DDT ZAP can be destroyed by sync context when it
becomes empty.  Respectively similar to BRT introduce RW-lock to
protect open context methods from the destruction.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com>
Closes #18115
2026-01-13 15:07:15 -08:00
Rob Norris
1051c3d211 spdxcheck: enforce SPDX license tags on build system files
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #18077
2026-01-08 15:08:32 -08:00
Rob Norris
85391ee931 build: add SPDX license tags to build system files
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #18077
2026-01-08 15:08:03 -08:00
Andrew Walker
aca58dbb65
Add fh_to_parent export definition
This commit adds support for converting a file handle to its
parent dentry. This is called in exportfs_decode_fh_raw()
when subtree checking is enabled in NFS. Defining this and
handling the expanded filehandles allows the knfsd to succeed
in handling the file handle where it might otherwise fail
with ESTALE when trying to open by filehandle.

A side effect of this change is that name_to_handle_at(2)
and open_by_handle_at(2) now support AT_HANDLE_CONNECTABLE.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Signed-off-by: Andrew Walker <andrew.walker@truenas.com>
Closes #18099
2026-01-08 15:06:12 -08:00
Rob Norris
f2b4ed3fe5 spl: remove a _KERNEL check
This code is only compiled for the Linux kernel module, so that define
is always set.

Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #18117
2026-01-08 10:33:44 -08:00
Rob Norris
02a631139f spl: unexport kstat_proc_entry functions
These are used to implement the kstat and procfs_list interfaces, and
aren't used from outside. There's no need to export them.

Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #18117
2026-01-08 10:33:37 -08:00
Rob Norris
662f33f323 spl: lift 64-bit math compat out to separate file
It's a lot of rarely-compiled code, so move it to the side to make other
code easier to read.

Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #18117
2026-01-08 10:33:32 -08:00
Rob Norris
2ca6e880da spl: remove old atomic lock
Long ago, SPL atomics were implemented as a global spinlock over
conventional operations. In 5e9b5d832b (2009-10) they was converted to
proper atomics, with the spinlock retained as a fallback.

The switch to compile with the fallback was later removed in a91258913f
(2018-05), but the code it enabled wasn't. So lets do that.

Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #18117
2026-01-08 10:33:14 -08:00
Dimitry Andric
2f1f25217f
icp: emit .note.GNU-stack section for all ELF targets
On FreeBSD, linking the zfs kernel module with binutils ld 2.44 shows
the following warning:

    ld: warning: aesni-gcm-avx2-vaes.o: missing .note.GNU-stack section
    implies executable stack
    ld: NOTE: This behaviour is deprecated and will be removed in a
    future version of the linker

Some of the `.S` files under `module/icp/asm-x86_64/modes` check whether
to emit the `.note.GNU-stack` section using:

    #if defined(__linux__) && defined(__ELF__)

We could add `&& defined(__FreeBSD__)` to the test, but since all other
`.S` files in the OpenZFS tree use:

    #ifdef __ELF__

it would seem more logical to use that instead. Any recent ELF platform
should support these note sections by now.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Dimitry Andric <dimitry@andric.com>
Closes #18119
2026-01-08 09:21:12 -08:00
Austin Wise
794f1587db
When receiving a stream with the large block flag, activate feature
ZFS send streams include a feature flag DMU_BACKUP_FEATURE_LARGE_BLOCKS
to indicate the presence of large blocks in the dataset. On the sending
side, this flag is included if the `-L` flag is passed to `zfs send`
and the feature is active in the dataset. On the receive side, the
stream is refused if the feature is active in the destination dataset
but the stream does not include the feature flag.

The problem is the feature is only activated when a large block is
born. If a large block has been born in the destination, but never
the source, the send can't work. This can arise when sending streams
back and forth between two datasets.

This commit fixes the problem by always activating the large blocks
feature when receiving a stream with the large block feature flag.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Austin Wise <AustinWise@gmail.com>
Closes #18105
2026-01-07 16:47:12 -08:00
Jitendra Patidar
2301755dfb
Fix zfs_open() to skip zil_async_to_sync() for the snapshot
Fix zfs_open() to skip zil_async_to_sync() for the snapshot, as it won't
have any transactions. zfsvfs->z_log is NULL for the snapshot.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Jitendra Patidar <jitendra.patidar@nutanix.com>
Closes #18091
2026-01-06 10:58:56 -08:00
Wolfgang Hoschek
c77f17b750
Add snapshots_changed_nsecs dataset property
Add a read-only dataset property, snapshots_changed_nsecs, which 
exposes the nanosecond resolution version of snapshots_changed.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Wolfgang Hoschek <wolfgang.hoschek@mac.com>
Closes #17998
Closes #18031
2026-01-06 09:36:20 -08:00
shuppy
6eef5cdc94
ZTS: add regression test for #17180
In #17180, we fixed an interesting bug that i believe i hit in one of my
pools, but as far as i can tell, there was no test for it.

this patch adds a regression test for #17180, minimised from my attempts
to reproduce the bug in a way that resembled the history of my pool.

Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Adam Moss <c@yotes.com>
Signed-off-by: delan azabani <dazabani@igalia.com>
Closes #18109
2026-01-06 09:33:03 -08:00
Dimitry Andric
2dbd6af5e4
Rename several printf attributes declarations to __printf__
For kernel builds on FreeBSD, we redefine `__printf__` to
`__freebsd_kprintf__`, to support FreeBSD kernel printf(9) extensions
with clang.

In OpenZFS various printf related functions are declared with
`__attribute__((format(printf, X, Y)))`, so these won't work with the
above redefinition. With clang 21 and higher, this leads to errors
similar to:

    sys/contrib/openzfs/module/zfs/spa_misc.c:414:38: error: passing
    'printf' format string where 'freebsd_kprintf' format string is
    expected [-Werror,-Wformat]
      414 |         (void) vsnprintf(buf, sizeof (buf), fmt, adx);
          |                                             ^

Since attribute names can always be spelled with leading and trailing
double underscores, rename these instances.

Note that in the FreeBSD base system we usually use `__printflike` from
`<sys/cdefs.h>`, but that does not apply to OpenZFS.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Dimitry Andric <dimitry@andric.com>
Closes #18095
2026-01-05 14:15:22 -08:00
Andrew Walker
312bdab0f5
Add handling for STATX_CHANGE_COOKIE
This commit adds handling for the STATX_CHANGE_COOKIE so that
we can properly surface the ZFS znode sequence to NFS clients via
knfsd.

If knfsd does not have STATX_CHANGE_COOKIE in statx result then
it will synthesize the NFS change_info4 structure and related
change4id values algorithmically based on the ctime value of the
file. Since internally ZFS is using ktime_get_coarse_real_ts64()
for the timestamp calculation here it introduces the possiblity
that the change will not increment the change4id of directories
/ files causing a failure in the client to invalidate its attr
cache (among other things). See RFC 8881 Section 10.8 for
discussion of how clients may implement name and directory
caching.

Notable in this commit is that we are not initializing the
inode->i_version to the znode->z_seq number. The reason for this
is that we're intentionally not setting `SB_I_VERSION`. This
indicates that the filesystem manages its own i_version and
so it is not populated in the generic_fillattr.

The following compares tight loop of setattr over NFSv4
protocol while traching nfsd4_change_attribute.

Before change:
inode, change_attribute
4723, 7590032215978780890
4723, 7590032215978780890
4723, 7590032215978780890
4723, 7590032215982780865
4723, 7590032215982780865

After change:
inode, change_attribute
7602, 7590032992517123951
7602, 7590032992517123952
7602, 7590032992517123953
7602, 7590032992517123954
7602, 7590032992517123955

Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Andrew Walker <andrew.walker@truenas.com>
Closes #18097
2026-01-05 14:06:28 -08:00
Rob Norris
a1319bf654
kmem: don't add __GFP_RECLAIMABLE for KM_VMEM allocations
vmalloc()'d memory is not movable/reclaimable, so __GFP_RECLAIMABLE is
not a valid flag, and since 6.19 the kernel warns if you use it.

Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #18107
2026-01-05 13:35:13 -08:00
Ivan Shapovalov
dbb3f247ed
cmd/zfs: clone: accept -u to not mount newly created datasets
Signed-off-by: Ivan Shapovalov <intelfx@intelfx.name>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Closes #18080
2026-01-05 12:21:56 -05:00
Alexander Moch
b9b84445ea
CI: Add Alpine Linux 3.23 runner to the pipeline (#18087)
Add an Alpine Linux 3.23 runner to the CI chain to run OpenZFS builds
and tests against musl libc.

Currently, zfs_send_sparse is killed after 10 minutes on Alpine, causing
cascading EBUSY failures in the test suite. With zfs_send_sparse
disabled, the ZFS test suite reaches a pass rate of 94.62%.

This commit introduces the required Alpine-specific setup and a small
set of shell and cloud-init compatibility fixes that also apply to
existing Linux runners.

The Alpine runner is not enabled by default and is not executed for new
pull requests.

Sponsored-by: ERNW Research GmbH - https://ernw-research.de/

Signed-off-by: Alexander Moch <amoch@ernw.de>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
2025-12-30 09:29:48 -08:00
Alexander Moch
e72f3054e3
cmd/ztest: avoid PATH_MAX stack allocation in ztest_get_zdb_bin() (#18085)
Calling realpath(path, buf) can trigger fortified header wrappers that
allocate a PATH_MAX-sized temporary buffer on the stack, exceeding the
4 KiB frame limit on some systems. Use the heap-allocating
realpath(path, NULL) form instead.

Sponsored-by: ERNW Research GmbH - https://ernw-research.de/

Signed-off-by: Alexander Moch <amoch@ernw.de>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
2025-12-29 11:16:34 -08:00
Rob Norris
f041375b52 kmem: don't add __GFP_COMP for KM_VMEM allocations
It hasn't been necessary since Linux 3.13
(torvalds/linux@a57a49887e), and since 6.19 the kernel warns if you
use it.

Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #18053
2025-12-23 12:54:34 -08:00
Rob Norris
f95e306266 kmem: don't pass __GFP_HIGHMEM to __vmalloc
Since Linux 4.12 (torvalds/linux@19809c2da2) __GFP_HIGHMEM has been
automatically added to calls to __vmalloc() internally, so we don't need
it anymore. This is good, because since 6.19 the kernel warns if you use
__GFP_HIGHMEM.

Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #18053
2025-12-23 12:54:11 -08:00
Rob Norris
3c8665cb5d Linux 6.19: replace i_state access with inode_state_read_once()
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #18053
2025-12-23 12:53:32 -08:00
Ivan Shapovalov
3c4193333b zed.d, contrib: fix shellcheck errors in scripts
Not sure why this was not caught by CI; perhaps my shellcheck is new
enough to catch more things.

Signed-off-by: Ivan Shapovalov <intelfx@intelfx.name>
2025-12-23 11:12:21 -08:00