Commit Graph

9202 Commits

Author SHA1 Message Date
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
Derek Schrock 4de260efe3
contrib/bash_completion.d: squelch FreeBSD seq when first < last
With seq x -1 z and x is less than z FreeBSD seq will print the error:

	$ seq 1 -1 2
	seq: needs positive increment

Hide this error.  Alternatively $COMP_CWORD could be checked for < 2.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Derek Schrock <dereks@lifeofadishwasher.com>
Closes #16234
2024-06-06 17:37:26 -07:00
Ameer Hamza b558f0a9d6
zdb: fix FreeBSD build failure
This fixes FreeBSD build failure with clang-18 after 23a489a got merged.

Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Rob Norris <rob.norris@klarasystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #16252
2024-06-06 17:01:26 -07:00
Ameer Hamza 23a489a411
zdb: detect cachefile automatically otherwise force import
If a pool is created with the cache file located in a non-default 
path /etc/default/zpool.cache, removed, or the cachefile property 
is set to none, zdb fails to show the pool unless we specify the 
cache file or use the -e option. This PR automates this process.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Akash B <akash-b@hpe.com>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #16071
2024-06-03 16:28:43 -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
Tony Hutter a301dc364c
ZTS: Fix redacted_send failures on FreeBSD
We're seeing failures for redacted_deleted and redacted_mount
on FreeBSD 13-15:

    09:58:34.74 diff: /dev/fd/3: No such file or directory
    09:58:34.74 ERROR: diff /dev/fd/3 /dev/fd/4 exited 2

The test was trying to diff the file listings between two directories to
see if they are the same.  The workaround is to do a string comparison
of the directory listings instead of using `diff`.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #16224
2024-05-31 15:11:00 -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
Pawel Jakub Dawidek 5137c132a5
zpool import output is not formated properly.
The 'zpool status' output assumes that the longest prefix is six
character long plus colon plus space, eg. 'status: ', 'action: '
or 'config: ' (so eight in total). This works well even when we have
messages that requires more than one line, as '\t' is exactly eight
characters, just like the longest prefix.

The 'zpool import' output is a bit different, as it may display the
comment pool property, then the longest prefix is 'comment: ', which is
nine characters long, not eight.
All the prefixes were given an extra space in front, but:
- 'status: ' did not get an extra space.
- Messages that require more than one line should use nine spaces of
  indentation, not eight.
- The extra space in front looks redundant if there is no comment
  property set on the given pool.

Fix it by adding an extra space to all prefixes, but only if the comment
property is defined. Also, when we need to continue the message in a new
line, use '\t ' for indentation.

While here, apply small corrections to a couple messages.

Before:

   pool: tank
     id: 7412636063178848859
  state: ONLINE
status: Some supported features are not enabled on the pool.
	(Note that they may be intentionally disabled if the
	'compatibility' property is set.)
 action: The pool can be imported using its name or numeric identif[...]
	some features will not be available without an explicit 'zp[...]
comment: Example comment.
 config:

	bclone      ONLINE
	  ada0      ONLINE

After:

  pool: tank
    id: 10180960571062436759
 state: ONLINE
status: Some supported features are not enabled on the pool.
	(Note that they may be intentionally disabled if the
	'compatibility' property is set.)
action: The pool can be imported using its name or numeric identifi[...]
	some features will not be available without an explicit 'zp[...]
config:

	tank        ONLINE
	  ada3      ONLINE

   pool: dozer
     id: 11028319538368222579
  state: ONLINE
 status: Some supported features are not enabled on the pool.
	 (Note that they may be intentionally disabled if the
	 'compatibility' property is set.)
 action: The pool can be imported using its name or numeric identif[...]
	 some features will not be available without an explicit 'z[...]
comment: Example comment.
 config:

	dozer       ONLINE
	  ada1      ONLINE

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Pawel Dawidek <pawel@dawidek.net>
Closes #16128
2024-05-29 13:34:59 -07:00
Martin Matuška ae22044da9
spl: fix compilation without HAVE_BACKTRACE
The __maybe_unused macro is defined in spl/sys/debug.h

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Martin Matuska <mm@FreeBSD.org>
Closes #16229
2024-05-29 10:51:01 -07:00
Pawel Jakub Dawidek 01c8efdd59
Simplify issig().
We always call it twice with JUSTLOOKING and then FORREAL.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Pawel Jakub Dawidek <pawel@dawidek.net>
Closes #16225
2024-05-29 10:49:11 -07:00
Brian Behlendorf 6b95031f56
zed: Add deadman-slot_off.sh zedlet
Optionally turn off disk's enclosure slot if an I/O is hung
triggering the deadman.

It's possible for outstanding I/O to a misbehaving SCSI disk to
neither promptly complete or return an error.  This can occur due
to retry and recovery actions taken by the SCSI layer, driver, or
disk.  When it occurs the pool will be unresponsive even though
there may be sufficient redundancy configured to proceeded without
this single disk.

When a hung I/O is detected by the kmods it will be posted as a
deadman event.  By default an I/O is considered to be hung after
5 minutes.  This value can be changed with the zfs_deadman_ziotime_ms
module parameter.  If ZED_POWER_OFF_ENCLOSURE_SLOT_ON_DEADMAN is set
the disk's enclosure slot will be powered off causing the outstanding
I/O to fail.  The ZED will then handle this like a normal disk failure.
By default ZED_POWER_OFF_ENCLOSURE_SLOT_ON_DEADMAN is not set.

As part of this change `zfs_deadman_events_per_second` is added
to control the ratelimitting of deadman events independantly of
delay events.  In practice, a single deadman event is sufficient
and more aren't particularly useful.

Alphabetize the zfs_deadman_* entries in zfs.4.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #16226
2024-05-29 10:46:41 -07:00
Alexander Motin 800d59d577
Some improvements to metaslabs eviction
- Add old eviction for special and dedup metaslab classes. Those
vdevs may be potentially big and fragmented with large metaslabs,
while their asynchronous write pattern is not really different
from normal class. It seems an omission to not evict old metaslabs
from them.
 - If we have metaslab preload enabled, which means we are not too
low on memory, do not evict active metaslabs even if they are not
used for some time.  Eviction of active metaslabs means we won't
be able to write anything until we load them, that may take some
time, that is straight opposite to metaslab preload goals.  For
small systems the memory saving should be less important after
recent reduction in number of allocators and so open metaslabs.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Closes #16214
2024-05-29 08:53:31 -07:00
Alexander Motin 02c5aa9b09
Destroy ARC buffer in case of fill error
In case of error dmu_buf_fill_done() returns the buffer back into
DB_UNCACHED state.  Since during transition from DB_UNCACHED into
DB_FILL state dbuf_noread() allocates an ARC buffer, we must free
it here, otherwise it will be leaked.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Jorgen Lundman <lundman@lundman.net>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored by: iXsystems, Inc.
Closes #15665
Closes #15802
Closes #16216
2024-05-24 19:11:18 -07:00
George Amanakis 8865dfbcaa
Fix assertion in Persistent L2ARC
At the end of l2arc_evict() fix an assertion in the case that l2ad_hand
+ distance == l2ad_end.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: George Amanakis <gamanakis@gmail.com>
Closes #16202
Closes #16207
2024-05-24 19:02:58 -07:00
Rob N d0aa9dbccf
Use memset to zero stack allocations containing unions
C99 6.7.8.17 says that when an undesignated initialiser is used, only
the first element of a union is initialised. If the first element is not
the largest within the union, how the remaining space is initialised is
up to the compiler.

GCC extends the initialiser to the entire union, while Clang treats the
remainder as padding, and so initialises according to whatever
automatic/implicit initialisation rules are currently active.

When Linux is compiled with CONFIG_INIT_STACK_ALL_PATTERN,
-ftrivial-auto-var-init=pattern is added to the kernel CFLAGS. This flag
sets the policy for automatic/implicit initialisation of variables on
the stack.

Taken together, this means that when compiling under
CONFIG_INIT_STACK_ALL_PATTERN on Clang, the "zero" initialiser will only
zero the first element in a union, and the rest will be filled with a
pattern. This is significant for aes_ctx_t, which in
aes_encrypt_atomic() and aes_decrypt_atomic() is initialised to zero,
but then used as a gcm_ctx_t, which is the fifth element in the union,
and thus gets pattern initialisation. Later, it's assumed to be zero,
resulting in a hang.

As confusing and undiscoverable as it is, by the spec, we are at fault
when we initialise a structure containing a union with the zero
initializer. As such, this commit replaces these uses with an explicit
memset(0).

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16135
Closes #16206
2024-05-24 19:00:29 -07:00
Rob N 34906f8bbe
zap: reuse zap_leaf_t on dbuf reuse after shrink
If a shrink or truncate had recently freed a portion of the ZAP, the
dbuf could still be sitting on the dbuf cache waiting for eviction. If
it is then allocated for a new leaf before it can be evicted, the
zap_leaf_t is still attached as userdata, tripping the VERIFY.

Instead, just check for the userdata, and if we find it, reuse it.

Sponsored-by: Klara, Inc.
Sponsored-by: iXsystems, Inc.
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16157.
Closes #16204
2024-05-24 18:55:47 -07:00
Rob N 708be0f415
Linux 6.7 compat: detect if kernel defines intptr_t
Since Linux 6.7 the kernel has defined intptr_t. Clang has
-Wtypedef-redefinition by default, which causes the build to fail
because we also have a typedef for intptr_t.

Since its better to use the kernel's if it exists, detect it and skip
our own.

Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #16201
2024-05-24 18:54:24 -07:00
Brooks Davis 7572e8ca04
Avoid a gcc -Wint-to-pointer-cast warning
On 32-bit platforms long long is generally 64-bits.  Sufficiently modern
versions of gcc (13 in my testing) complains when casting a pointer to
an integer of a different width so cast to uintptr_t first to avoid the
warning.

Fixes: c183d164aa Parallel pool import

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Don Brady <don.brady@klarasystems.com>
Signed-off-by: Brooks Davis <brooks.davis@sri.com>
Closes #16203
2024-05-24 18:45:58 -07:00
Pawel Jakub Dawidek 08648cf0da
Allow block cloning to be interrupted by a signal.
Even though block cloning is much faster than regular copying,
it is not instantaneous - the file might be large and the recordsize
small. It would be nice to be able to interrupt it with a signal
(e.g., SIGINFO on FreeBSD to see the progress).

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Pawel Jakub Dawidek <pawel@dawidek.net>
Closes #16208
2024-05-24 18:45:09 -07:00
Alexander Motin efbef9e6cc
FreeBSD: Add zfs_link_create() error handling
Originally Solaris didn't expect errors there, but they may happen
if we fail to add entry into ZAP.  Linux fixed it in #7421, but it
was never fully ported to FreeBSD.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored-By: iXsystems, Inc.
Closes #13215
Closes #16138
2024-05-16 17:56:55 -07:00
omni fec16b93c4 config/zfs-build.m4: add Alpine Linux bash-completion path
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: omni <omni+vagant@hack.org>
Closes #16164
2024-05-16 17:55:09 -07:00
omni d0d7c0d8f9 config/zfs-build.m4: sort vendors
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: omni <omni+vagant@hack.org>
Closes #16164
2024-05-16 17:54:55 -07:00
Rich Ercolani a043b60f1e
Correct level handling in zstream recompress.
sscanf returns number of items parsed on success and EOF on failure.

Reviewed-by: Adam Moss <c@yotes.com>
Reviewed-by: Paul Dagnelie <pcd@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Rob Norris <robn@despairlabs.com>
Signed-off-by: Rich Ercolani <rincebrain@gmail.com>
Closes #16198
2024-05-16 15:37:50 -07:00
Rob N e675852bc1
dbuf: separate refcount calls for dbuf and dbuf_user
In 92dc4ad83 I updated the dbuf_cache accounting to track the size of
userdata associated with dbufs. This adds the size of the dbuf+userdata
together in a single call to zfs_refcount_add_many(), but sometime
removes them in separate calls to zfs_refcount_remove_many(), if dbuf
and userdata are evicted separately.

What I didn't realise is that when refcount tracking is on,
zfs_refcount_add_many() and zfs_refcount_remove_many() are expected to
be paired, with their second & third args (count & holder) the same on
both sides. Splitting the remove part into two calls means the counts
don't match up, tripping a panic.

This commit fixes that, by always adding and removing the dbuf and
userdata counts separately.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reported-by: Mark Johnston <markj@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16191
2024-05-15 13:03:41 -07:00
Rob Norris 3c941d1818 zdb/ztest: send dbgmsg output to stderr
And, make the output fd an arg to zfs_dbgmsg_print(). This is a change
in behaviour, but keeps it consistent with where crash traces go, and
it's easy to argue this is what we want anyway; this is information
about the task, not the actual output of the task.

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 #16181
2024-05-14 09:49:00 -07:00
Rob Norris fa99d9cd9c zfs_dbgmsg_print: make FreeBSD and Linux consistent
FreeBSD was using fprintf(), which might not be signal-safe. Meanwhile,
Linux's locking did not cover the header output. This two quirks are
unrelated, but both have the same response: be like the other one. So
with this commit, both functions are the same except for the names of
their lock and list variables.

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 #16181
2024-05-14 09:48:56 -07:00
Rob Norris 1ea8c59441 backtrace: rework for signal safety
Mostly, try a lot harder to not allocate anything.

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 #16181
2024-05-14 09:48:51 -07:00
Rob Norris 3974ef045e libspl: lift backtrace into a separate file
If it's going to be used directly by zdb/ztest, then it sort of doesn't
make sense to carry it with the assert code.

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 #16181
2024-05-14 09:48:45 -07:00
Rob Norris e7b451941b zdb/ztest: use libspl backtrace for crashes
We can show much nicer backtraces these days, lets use them.

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 #16181
2024-05-14 09:48:39 -07:00
Rob Norris 91c46d4399 zdb: bring crash handling over from ztest
ztest has a very nice ability to show a backtrace when there's an
unexpected crash. zdb is used often enough on corrupted data and can
blow up too, so nice output is useful there too.

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 #16181
2024-05-14 09:48:23 -07:00
Rob Norris 0a543db371 spa_taskq_dispatch_ent: simplify arguments
This renames it to spa_taskq_dispatch(), and reduces and simplifies its
arguments based on these observations from its two call sites:

- arg is always the zio, so it can be typed that way, and we don't need
  to provide it twice;
- ent is always &zio->io_tqent, and zio is always provided, so we can
  use it directly;
- the only flag used is TQ_FRONT, which can just be a bool;
- zio != NULL was part of the "use allocator" test, but it never would
  have got that far, because that arg was only set to NULL in the
  reexecute path, which is forced to type CLAIM, so the condition would
  fail at t == WRITE anyway.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16151
2024-05-14 09:40:16 -07:00
Rob Norris 515c4dd213 spa: flatten spa_taskq_dispatch_ent()
It is the only user of spa_taskq_dispatch_select(), so might as well
just carry it directly.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16151
2024-05-14 09:40:09 -07:00
Rob Norris adda768e3e spa: remove spa_taskq_dispatch_sync()
It has no callers anymore.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16151
2024-05-14 09:40:02 -07:00
Rob Norris cc38691534 zfs_ioc_send: use a dedicated taskq thread for send
When stack space is tight, the stream is written to its target on a
separate taskq thread to make sure there's enough stack space to
complete it.

This has always used an IO taskq, but that doesn't really make sense for
it, and moving it onto a regular taskq lets us get rid of
spa_taskq_dispatch_sync(), which is not used anywhere else.

Stream writes may block for a long time depending on what the target is,
and we have no way of discovering this, so we can't risk using the
system taskq, as there may be many tens of sends in progress. Instead,
we create a dedicated taskq thread for each send writer to run on, and
clean it up when it's done.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16151
2024-05-14 09:39:26 -07:00
Alan Somers b64afa41d5 Better control the thread pool size when mounting datasets
Ever since a10d50f999, ZFS has mounted file systems in parallel when
importing a pool.  It uses a fixed size of 512 for the thread pool.  But
since c183d164aa, it has also imported pools in parallel.  So the total
number of threads at one time is 513 * npools + 1.  That can easily
exceed the system's limit on the number of threads per process, which
will cause one or more pools to be unable to allocate any worker
threads, forcing them to fallback to slow serial mounting .  To
forestall that, manage the threadpool size in /sbin/zpool, not libzfs.
Use the same size (512), but divided by the number of pools.

This is a backwards-incompatible change to the libzfs abi.

Sponsored by: Axcient
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Wilson <gwilson@delphix.com>
Signed-off-by: Alan Somers <asomers@FreeBSD.org>
Closes #16178
2024-05-14 09:36:21 -07:00
Alan Somers eced2e2f1e libzfs: Fix mounting datasets under thread limit pressure
During parallel zpool import, /sbin/zpool will create a separate thread
pool for each pool, used to mount that pool's datasets.  If the total
thread count exceed's the system's limit on threads per process, then
tpool_dispatch may fail.  If it does, directly execute the mount
operation instead.

Sponsored by: Axcient
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Wilson <gwilson@delphix.com>
Signed-off-by: Alan Somers <asomers@FreeBSD.org>
Closes #16178
Fixes #16172
2024-05-14 09:36:14 -07:00
Alan Somers f625d038d2 tpool_dispatch: fail if it cannot start at least 1 worker.
Sponsored by: Axcient
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Wilson <gwilson@delphix.com>
Signed-off-by: Alan Somers <asomers@FreeBSD.org>
Closes #16178
2024-05-14 09:35:48 -07:00
Don Brady 89acef992b Simplified the scope of the namespace lock
If we wait until after we check for no spa references to drop the
namespace lock, then we know that spa consumers will need to call
spa_lookup() and end up waiting on the spa_namespace_cv until we
finish.  This narrows the external checks to spa_lookup and we no
longer need to worry about the spa_vdev_enter case.

Sponsored-By: Klara Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Wilson <gwilson@delphix.com>
Signed-off-by: Don Brady <don.brady@klarasystems.com>
Closes #16153
2024-05-14 08:58:15 -07:00
Don Brady 975a13259b Add support for parallel pool exports
Changed spa_export_common() such that it no longer holds the
spa_namespace_lock for the entire duration and instead sets
spa_export_thread to indicate an import is in progress on the
spa.  This allows for an export to a diffent pool to proceed
in parallel while an export is still processing potentially
long operations like spa_unload_log_sm_flush_all().

Calls like spa_lookup() and spa_vdev_enter() that rely on
the spa_namespace_lock to serialize them against a concurrent
export, now wait for any in-progress export thread to complete
before proceeding.

The 'zpool import -a' sub-command also provides multi-threaded
support, using a thread pool to submit the exports in parallel.

Sponsored-By: Klara Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Wilson <gwilson@delphix.com>
Signed-off-by: Don Brady <don.brady@klarasystems.com>
Closes #16153
2024-05-14 08:57:41 -07:00
Brian Behlendorf abec7dcd30
Linux: disable lockdep for a couple of locks
When running a debug kernel with lockdep enabled there
are several locks which report false positives.  Set
MUTEX_NOLOCKDEP/RW_NOLOCKDEP to disable these warnings.

Reviewed-by: Brian Atkinson <batkinson@lanl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #16188
2024-05-13 15:12:07 -07:00