Archive-Team
/
zfs
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 103 Wiki Activity
zfs/include/sys
History
Mariusz Zaborski 40a9efd0e8 zfs: support force exporting pools 
This is primarily of use when a pool has lost its disk, while the user
doesn't care about any pending (or otherwise) transactions.

Implement various control methods to make this feasible:
- txg_wait can now take a NOSUSPEND flag, in which case the caller will
  be alerted if their txg can't be committed.  This is primarily of
  interest for callers that would normally pass TXG_WAIT, but don't want
  to wait if the pool becomes suspended, which allows unwinding in some
  cases, specifically when one is attempting a non-forced export.
  Without this, the non-forced export would preclude a forced export
  by virtue of holding the namespace lock indefinitely.
- txg_wait also returns failure for TXG_WAIT users if a pool is actually
  being force exported.  Adjust most callers to tolerate this.
- spa_config_enter_flags now takes a NOSUSPEND flag to the same effect.
- DMU objset initiator which may be set on an objset being forcibly
  exported / unmounted.
- SPA export initiator may be set on a pool being forcibly exported.
- DMU send/recv now use an interruption mechanism which relies on the
  SPA export initiator being able to enumerate datasets and closing any
  send/recv streams, causing their EINTR paths to be invoked.
- ZIO now has a cancel entry point, which tells all suspended zios to
  fail, and which suppresses the failures for non-CANFAIL users.
- metaslab, etc. cleanup, which consists of simply throwing away any
  changes that were not able to be synced out.
- Linux specific: introduce a new tunable,
  zfs_forced_export_unmount_enabled, which allows the filesystem to
  remain in a modified 'unmounted' state upon exiting zpl_umount_begin,
  to achieve parity with FreeBSD and illumos,
  which have VFS-level support for yanking filesystems out from under
  users.  However, this only helps when the user is actively performing
  I/O, while not sitting on the filesystem.  In particular, this allows
  test #3 below to pass on Linux.
- Add basic logic to zpool to indicate a force-exporting pool, instead
  of crashing due to lack of config, etc.

Add tests which cover the basic use cases:
- Force export while a send is in progress
- Force export while a recv is in progress
- Force export while POSIX I/O is in progress

This change modifies the libzfs ABI:
- New ZPOOL_STATUS_FORCE_EXPORTING zpool_status_t enum value.
- New field libzfs_force_export for libzfs_handle.

Signed-off-by: Will Andrews <will@firepipe.net>
Signed-off-by: Allan Jude <allan@klarasystems.com>
Signed-off-by: Mariusz Zaborski <mariusz.zaborski@klarasystems.com>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Sponsored-by:  Klara, Inc.
Sponsored-by:  Catalogics, Inc.
Sponsored-by:  Wasabi Technology, Inc.
Closes #3461
(cherry picked from commit 852e633772217d779a63e8c46fe3c5f81dd8960e)
 		2023-07-05 13:27:30 +00:00
..
crypto gcc 11 cleanup 2021-06-24 13:13:40 -07:00
fm Upstream: Add snapshot and zvol events 2022-02-10 11:04:06 -08:00
fs zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
lua FreeBSD: Reduce stack usage of Lua 2020-09-22 16:03:11 -07:00
sysevent Avoid installing kernel headers on FreeBSD 2020-06-27 17:40:14 -07:00
zstd Update `checkstyle` workflow env to ubuntu-20.04 2021-12-08 13:27:56 -08:00
Makefile.am Restore FreeBSD resource usage accounting 2021-02-19 22:34:33 -08:00
abd.h FreeBSD: Hardcode abd_chunk_size to PAGE_SIZE 2021-09-14 12:36:44 -07:00
abd_impl.h Fix abd leak, kmem_free correct size of abd_t 2021-09-14 12:22:28 -07:00
aggsum.h More aggsum optimizations 2021-06-09 13:05:34 -07:00
arc.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
arc_impl.h Remove b_pabd/b_rabd allocation from arc_hdr_alloc() 2021-09-14 14:31:50 -07:00
avl.h Restore avl_update() calls and related functions 2020-06-03 09:49:32 -07:00
avl_impl.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
bitops.h Reduce loaded range tree memory usage 2019-10-09 10:36:03 -07:00
blkptr.h OpenZFS 8067 - zdb should be able to dump literal embedded block pointer 2017-07-07 11:28:01 -07:00
bplist.h Fast Clone Deletion 2019-07-26 10:54:14 -07:00
bpobj.h Fast Clone Deletion 2019-07-26 10:54:14 -07:00
bptree.h Illumos 4914 - zfs on-disk bookmark structure should be named *_phys_t 2014-08-06 14:48:41 -07:00
bqueue.h Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
btree.h Fix typos 2020-06-09 21:24:09 -07:00
dataset_kstats.h Introduce write-mostly sums 2021-06-09 13:05:34 -07:00
dbuf.h Reduce dbuf_find() lock contention 2022-05-06 12:02:45 -07:00
ddt.h Appease GCC sprintf warnings found on Fedora 32/GCC 10.0.1 2020-08-24 10:32:59 -07:00
dmu.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
dmu_impl.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
dmu_objset.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
dmu_recv.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
dmu_redact.h Suppress cppcheck invalidSyntax warninigs 2021-03-05 17:56:35 -08:00
dmu_send.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
dmu_traverse.h Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
dmu_tx.h Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
dmu_zfetch.h Split dmu_zfetch() speculation and execution parts 2021-03-19 22:56:11 -07:00
dnode.h Silence unused-but-set-variable warning 2022-05-27 09:19:37 -07:00
dsl_bookmark.h Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
dsl_crypt.h dmu_objset_from_ds must be called with dp_config_rwlock held 2020-03-12 10:55:02 -07:00
dsl_dataset.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
dsl_deadlist.h Add fast path for zfs_ioc_space_snaps() handling of empty_bpobj 2019-08-20 11:34:52 -07:00
dsl_deleg.h Remove code for zfs remap 2019-06-24 16:44:01 -07:00
dsl_destroy.h Fast Clone Deletion 2019-07-26 10:54:14 -07:00
dsl_dir.h Introduce dsl_dir_diduse_transfer_space() 2021-09-14 12:38:51 -07:00
dsl_pool.h Fix ENOSPC when unlinking multiple files from full pool 2022-03-08 11:46:03 -08:00
dsl_prop.h Support inheriting properties in channel programs 2020-01-22 17:03:17 -08:00
dsl_scan.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
dsl_synctask.h Add upper bound for slop space calculation 2021-02-24 09:52:43 -08:00
dsl_userhold.h Illumos #3740 2013-11-04 11:17:48 -08:00
edonr.h OpenZFS 4185 - add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R 2016-10-03 14:51:15 -07:00
efi_partition.h Fix typos in include/ 2019-08-30 09:53:15 -07:00
frame.h Linux 5.10 compat: frame.h renamed objtool.h 2020-11-02 22:01:10 +00:00
hkdf.h Encryption patch follow-up 2017-10-11 16:54:48 -04:00
jprint.h Add a JSON equivalent to zpool-status(8) 2023-07-05 13:27:30 +00:00
json_stats.h Add a JSON equivalent to zpool-status(8) 2023-07-05 13:27:30 +00:00
metaslab.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
metaslab_impl.h Optimize allocation throttling 2021-09-14 12:40:15 -07:00
mmp.h Add zfs_multihost_interval tunable handler for FreeBSD 2020-06-23 13:32:42 -07:00
mntent.h Add FreeBSD required defines to mntent.h 2019-11-30 15:49:09 -08:00
mod.h Replace ZFS on Linux references with OpenZFS 2020-10-08 20:10:13 -07:00
multilist.h Re-embed multilist_t storage 2021-06-10 10:50:16 -07:00
note.h Update build system and packaging 2018-05-29 16:00:33 -07:00
nvpair.h FreeBSD: make adjustments for the standalone environment 2020-10-13 21:05:49 -07:00
nvpair_impl.h OpenZFS 9580 - Add a hash-table on top of nvlist to speed-up operations 2018-07-30 11:30:03 -07:00
objlist.h Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
pathname.h Replace ZFS on Linux references with OpenZFS 2020-10-08 20:10:13 -07:00
qat.h QAT related bug fixes 2019-09-12 13:33:44 -07:00
range_tree.h Improve compatibility with C++ consumers 2020-06-06 12:54:04 -07:00
rrwlock.h Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
sa.h Extending FreeBSD UIO Struct 2021-01-20 21:27:30 -08:00
sa_impl.h Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
skein.h OpenZFS 4185 - add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R 2016-10-03 14:51:15 -07:00
spa.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
spa_boot.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
spa_checkpoint.h Serialize ZTHR operations to eliminate races 2019-01-13 10:09:46 -08:00
spa_checksum.h Implementation of AVX2 optimized Fletcher-4 2016-06-02 14:30:51 -07:00
spa_impl.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
spa_log_spacemap.h Log Spacemap Project 2019-07-16 10:11:49 -07:00
space_map.h Extend zdb to print inconsistencies in livelists and metaslabs 2020-07-14 17:51:05 -07:00
space_reftree.h Reduce loaded range tree memory usage 2019-10-09 10:36:03 -07:00
sysevent.h OpenZFS 6939 - add sysevents to zfs core for commands 2017-07-12 21:28:13 -07:00
txg.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
txg_impl.h Fix typos in include/ 2019-08-30 09:53:15 -07:00
u8_textprep.h Throw const on some strings 2020-10-02 17:44:10 -07:00
u8_textprep_data.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
uberblock.h Multi-modifier protection (MMP) 2017-07-13 13:54:00 -04:00
uberblock_impl.h MMP interval and fail_intervals in uberblock 2019-03-21 12:47:57 -07:00
uio_impl.h Cleaning up uio headers 2021-02-20 20:16:50 -08:00
unique.h Illumos #3742 2013-11-04 10:55:25 -08:00
uuid.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
vdev.h Use a helper function to clarify gang block size 2021-03-26 11:19:35 -07:00
vdev_disk.h Make struct vdev_disk_t be platform private 2020-06-16 11:43:33 -07:00
vdev_draid.h Verify dRAID empty sectors 2022-02-03 15:28:01 -08:00
vdev_file.h Add zfs_file_* interface, remove vnodes 2019-11-21 09:32:57 -08:00
vdev_impl.h Ratelimit deadman zevents as with delay zevents 2021-04-14 13:19:49 -07:00
vdev_indirect_births.h OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
vdev_indirect_mapping.h OpenZFS 7614, 9064 - zfs device evacuation/removal 2018-04-14 12:16:17 -07:00
vdev_initialize.h Add TRIM support 2019-03-29 09:13:20 -07:00
vdev_raidz.h Verify dRAID empty sectors 2022-02-03 15:28:01 -08:00
vdev_raidz_impl.h Fix dRAID sequential resilver silent damage handling 2021-05-27 22:31:56 -07:00
vdev_rebuild.h Fix various typos 2021-04-07 13:27:11 -07:00
vdev_removal.h panic in removal_remap test on 4K devices 2019-06-13 13:12:39 -07:00
vdev_trim.h Trim L2ARC 2020-06-09 10:15:08 -07:00
xvattr.h Linux 4.18 compat: inode timespec -> timespec64 2018-06-19 21:51:18 -07:00
zap.h Linux 5.19 compat: zap_flags_t conflict 2022-06-01 14:24:49 -07:00
zap_impl.h OpenZFS 7793 - ztest fails assertion in dmu_tx_willuse_space 2017-03-07 09:51:59 -08:00
zap_leaf.h Fix ENOSPC in "Handle zap_add() failures in ..." 2018-04-18 14:19:50 -07:00
zcp.h filesystem_limit/snapshot_limit is incorrectly enforced against root 2020-07-11 17:18:02 -07:00
zcp_global.h OpenZFS 7431 - ZFS Channel Programs 2018-02-08 15:28:18 -08:00
zcp_iter.h OpenZFS 7431 - ZFS Channel Programs 2018-02-08 15:28:18 -08:00
zcp_prop.h OpenZFS 7431 - ZFS Channel Programs 2018-02-08 15:28:18 -08:00
zcp_set.h Support setting user properties in a channel program 2020-02-14 13:41:42 -08:00
zfeature.h Revert "zhack: Add 'feature disable' command" 2016-05-17 11:52:07 -07:00
zfs_acl.h Return an error code from zfs_acl_chmod_setattr 2019-11-01 10:19:11 -07:00
zfs_bootenv.h zfs label bootenv should store data as nvlist 2020-09-15 15:42:27 -07:00
zfs_context.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
zfs_debug.h Annotated dprintf as printf-like 2021-06-24 13:12:36 -07:00
zfs_delay.h Update build system and packaging 2018-05-29 16:00:33 -07:00
zfs_file.h file reference counts can get corrupted 2021-09-14 12:37:38 -07:00
zfs_fuid.h Replace sprintf()->snprintf() and strcpy()->strlcpy() 2020-06-07 11:42:12 -07:00
zfs_ioctl.h file reference counts can get corrupted 2021-09-14 12:37:38 -07:00
zfs_ioctl_impl.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
zfs_onexit.h file reference counts can get corrupted 2021-09-14 12:37:38 -07:00
zfs_project.h Minor diff reduction with ZoF in include/sys 2019-11-27 11:11:03 -08:00
zfs_quota.h File incorrectly zeroed when receiving incremental stream that toggles -L 2020-06-09 10:41:01 -07:00
zfs_racct.h Restore FreeBSD resource usage accounting 2021-02-19 22:34:33 -08:00
zfs_ratelimit.h Change checksum & IO delay ratelimit values 2018-03-04 17:34:51 -08:00
zfs_refcount.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
zfs_rlock.h Add a "try" operation for range locks 2020-07-06 11:53:31 -07:00
zfs_sa.h Extending FreeBSD UIO Struct 2021-01-20 21:27:30 -08:00
zfs_stat.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
zfs_sysfs.h Fix in-kernel sysfs entries 2018-09-06 21:44:52 -07:00
zfs_vfsops.h Add 'zfs rename -u' to rename without remounting 2020-09-01 16:14:16 -07:00
zfs_vnops.h Extending FreeBSD UIO Struct 2021-01-20 21:27:30 -08:00
zfs_znode.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
zil.h Fix zfs_get_data access to files with wrong generation 2021-03-19 22:53:31 -07:00
zil_impl.h make zil max block size tunable 2019-06-10 11:48:42 -07:00
zio.h zfs: support force exporting pools 2023-07-05 13:27:30 +00:00
zio_checksum.h Remove dependency on linear ABD 2017-03-29 12:24:51 -07:00
zio_compress.h Add zstd support to zfs 2020-08-20 10:30:06 -07:00
zio_crypt.h Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
zio_impl.h Add zstd support to zfs 2020-08-20 10:30:06 -07:00
zio_priority.h Add device rebuild feature 2020-07-03 11:05:50 -07:00
zrlock.h OpenZFS 6328 - Fix cstyle errors in zfs codebase 2017-01-12 09:42:11 -08:00
zthr.h Avoid memory allocations in the ARC eviction thread 2022-02-03 15:30:52 -08:00
zvol.h async zvol minor node creation interferes with receive 2020-02-03 09:33:14 -08:00
zvol_impl.h Fix zfs_get_data access to files with wrong generation 2021-03-19 22:53:31 -07:00