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mirror_zfs/module/zfs
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Matthew Ahrens 435dc4baab Assertion failure when logging large output of channel program 
The output of ZFS channel programs is logged on-disk in the zpool
history, and printed by `zpool history -i`.  Channel programs can use
10MB of memory by default, and up to 100MB by using the `zfs program -m`
flag.  Therefore their output can be up to some fraction of 100MB.

In addition to being somewhat wasteful of the limited space reserved for
the pool history (which for large pools is 1GB), in extreme cases this
can result in a failure of `ASSERT(length <= DMU_MAX_ACCESS);` in
`dmu_buf_hold_array_by_dnode()`.

This commit limits the output size that will be logged to 1MB.  Larger
outputs will not be logged, instead a entry will be logged indicating
the size of the omitted output.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes #11194
2020-11-14 10:51:21 -08:00
..
abd.c Add gang ABD child to parent gang ABD 2020-07-24 21:09:20 -07:00
aggsum.c Reduce number of atomic_add() calls in aggsum 2020-02-06 13:21:06 -08:00
arc.c Fix dmu_tx_dirty_throttle after arc_c reduction 2020-11-11 11:03:43 -08:00
blkptr.c Add zstd support to zfs 2020-08-20 10:30:06 -07:00
bplist.c Fast Clone Deletion 2019-07-26 10:54:14 -07:00
bpobj.c Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
bptree.c Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
bqueue.c Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
btree.c Fix typo in btree.c 2020-08-17 15:25:37 -07:00
dataset_kstats.c Fix panic on DilOS with kstat per dataset statistics 2019-09-03 12:12:31 -07:00
dbuf_stats.c Eliminate gratuitous bzeroing in dbuf_stats_hash_table_data 2020-10-01 12:22:54 -07:00
dbuf.c Replace cv_{timed}wait_sig with cv_{timed}wait_idle where appropriate 2020-09-09 10:21:01 -07:00
ddt_zap.c Refactor dnode dirty context from dbuf_dirty 2020-02-26 16:09:17 -08:00
ddt.c Remove dead code 2020-06-18 12:21:18 -07:00
dmu_diff.c Mark write_record static 2019-12-03 09:51:44 -08:00
dmu_object.c Add include files for prototypes 2020-06-18 12:21:25 -07:00
dmu_objset.c Throw const on some strings 2020-10-16 12:55:56 -07:00
dmu_recv.c Add zstd support to zfs 2020-08-20 10:30:06 -07:00
dmu_redact.c Fix dnode refcount tracking 2020-11-11 11:03:24 -08:00
dmu_send.c Drop references when skipping dmu_send due to EXDEV 2020-10-01 12:22:36 -07:00
dmu_traverse.c zil_parse: make callback parameters const 2020-10-16 13:01:53 -07:00
dmu_tx.c Refactor dnode dirty context from dbuf_dirty 2020-02-26 16:09:17 -08:00
dmu_zfetch.c Expose zfetch_max_idistance tunable 2020-10-16 13:02:39 -07:00
dmu.c Export dmu_offset_next() symbol 2020-08-25 08:34:41 -07:00
dnode_sync.c dnode_sync is careless with range tree 2020-08-27 16:07:05 -07:00
dnode.c Add DB_RF_NOPREFETCH to dbuf_read()s in dnode.c 2020-10-01 12:21:09 -07:00
dsl_bookmark.c Fix typos 2020-06-09 21:24:09 -07:00
dsl_crypt.c Prune dead branch reported by Coverity 2020-10-01 12:20:16 -07:00
dsl_dataset.c Add zstd support to zfs 2020-08-20 10:30:06 -07:00
dsl_deadlist.c Fix i/o error handling of livelists and zap iteration 2020-08-05 10:22:09 -07:00
dsl_deleg.c Reduce loaded range tree memory usage 2019-10-09 10:36:03 -07:00
dsl_destroy.c Fix i/o error handling of livelists and zap iteration 2020-08-05 10:22:09 -07:00
dsl_dir.c Add 'zfs rename -u' to rename without remounting 2020-09-03 16:16:15 -07:00
dsl_pool.c Mark functions as static 2020-06-18 12:20:38 -07:00
dsl_prop.c Replace sprintf()->snprintf() and strcpy()->strlcpy() 2020-06-07 11:42:12 -07:00
dsl_scan.c Update references to nonexistent man pages in code 2020-10-30 16:04:41 -07:00
dsl_synctask.c nowait synctask must succeed 2020-09-09 10:25:59 -07:00
dsl_userhold.c Replace sprintf()->snprintf() and strcpy()->strlcpy() 2020-06-07 11:42:12 -07:00
edonr_zfs.c Add include files for prototypes 2020-06-18 12:21:25 -07:00
fm.c Avoid posting duplicate zpool events 2020-09-09 10:26:00 -07:00
gzip.c Add include files for prototypes 2020-06-18 12:21:25 -07:00
hkdf.c Encryption patch follow-up 2017-10-11 16:54:48 -04:00
lz4.c Prefix zfs internal endian checks with _ZFS 2020-07-28 13:02:49 -07:00
lzjb.c Add include files for prototypes 2020-06-18 12:21:25 -07:00
Makefile.in Move spa_stats.c to common code 2020-08-30 14:19:08 -07:00
metaslab.c Update references to nonexistent man pages in code 2020-10-30 16:04:41 -07:00
mmp.c Initialize mmp_last_write when the mmp thread starts 2020-09-09 10:26:04 -07:00
multilist.c Make use of ZFS_DEBUG consistent within kmod sources 2020-07-25 20:07:44 -07:00
objlist.c Implement Redacted Send/Receive 2019-06-19 09:48:12 -07:00
pathname.c Replace ZFS on Linux references with OpenZFS 2020-10-16 13:01:24 -07:00
range_tree.c Fix incorrect deletion order in range_tree_add_impl gap case 2020-10-16 13:05:23 -07:00
refcount.c Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
rrwlock.c Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
sa.c Remove duplicate dnode.h include 2020-08-27 16:06:52 -07:00
sha256.c Add include files for prototypes 2020-06-18 12:21:25 -07:00
skein_zfs.c Add include files for prototypes 2020-06-18 12:21:25 -07:00
spa_boot.c Add include files for prototypes 2020-06-18 12:21:25 -07:00
spa_checkpoint.c Refactor dnode dirty context from dbuf_dirty 2020-02-26 16:09:17 -08:00
spa_config.c vdev_ashift should only be set once 2020-09-18 12:40:20 -07:00
spa_errlog.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
spa_history.c Update references to nonexistent man pages in code 2020-10-30 16:04:41 -07:00
spa_log_spacemap.c Make module tunables cross platform 2019-09-05 14:49:49 -07:00
spa_misc.c Update references to nonexistent man pages in code 2020-10-30 16:04:41 -07:00
spa_stats.c FreeBSD: Add support for procfs_list 2020-10-01 12:18:56 -07:00
spa.c Replace ZFS on Linux references with OpenZFS 2020-10-16 13:01:24 -07:00
space_map.c Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
space_reftree.c Reduce loaded range tree memory usage 2019-10-09 10:36:03 -07:00
THIRDPARTYLICENSE.cityhash OpenZFS 8484 - Implement aggregate sum and use for arc counters 2018-06-06 09:35:59 -07:00
THIRDPARTYLICENSE.cityhash.descrip OpenZFS 8484 - Implement aggregate sum and use for arc counters 2018-06-06 09:35:59 -07:00
txg.c Replace cv_{timed}wait_sig with cv_{timed}wait_idle where appropriate 2020-09-09 10:21:01 -07:00
uberblock.c MMP interval and fail_intervals in uberblock 2019-03-21 12:47:57 -07:00
unique.c Reduce loaded range tree memory usage 2019-10-09 10:36:03 -07:00
vdev_cache.c Replace ASSERTV macro with compiler annotation 2019-12-05 12:37:00 -08:00
vdev_indirect_births.c Fixes: #8934 Large kmem_alloc 2019-07-10 15:54:49 -07:00
vdev_indirect_mapping.c Replace ASSERTV macro with compiler annotation 2019-12-05 12:37:00 -08:00
vdev_indirect.c Avoid posting duplicate zpool events 2020-09-09 10:26:00 -07:00
vdev_initialize.c nowait synctask must succeed 2020-09-09 10:25:59 -07:00
vdev_label.c Replace ZFS on Linux references with OpenZFS 2020-10-16 13:01:24 -07:00
vdev_mirror.c vdev_ashift should only be set once 2020-09-18 12:40:20 -07:00
vdev_missing.c Import vdev ashift optimization from FreeBSD 2020-08-21 12:53:17 -07:00
vdev_queue.c Add device rebuild feature 2020-07-03 11:05:50 -07:00
vdev_raidz_math_aarch64_neon_common.h FreeBSD: fix the build with Clang 11 2020-08-17 15:40:17 -07:00
vdev_raidz_math_aarch64_neon.c Linux 5.0 compat: SIMD compatibility 2019-07-12 09:31:20 -07:00
vdev_raidz_math_aarch64_neonx2.c Linux 5.0 compat: SIMD compatibility 2019-07-12 09:31:20 -07:00
vdev_raidz_math_avx2.c FreeBSD: fix the build with Clang 11 2020-08-17 15:40:17 -07:00
vdev_raidz_math_avx512bw.c Refactor ccompile.h to not include system headers 2020-07-25 20:09:50 -07:00
vdev_raidz_math_avx512f.c FreeBSD: fix the build with Clang 11 2020-08-17 15:40:17 -07:00
vdev_raidz_math_impl.h Fix const-correctness in raidz math 2020-02-03 10:52:41 -08:00
vdev_raidz_math_powerpc_altivec_common.h FreeBSD: fix the build with Clang 11 2020-08-17 15:40:17 -07:00
vdev_raidz_math_powerpc_altivec.c Prefix zfs internal endian checks with _ZFS 2020-07-28 13:02:49 -07:00
vdev_raidz_math_scalar.c Linux 5.3: Fix switch() fall though compiler errors 2019-08-21 09:29:23 -07:00
vdev_raidz_math_sse2.c FreeBSD: fix the build with Clang 11 2020-08-17 15:40:17 -07:00
vdev_raidz_math_ssse3.c Refactor ccompile.h to not include system headers 2020-07-25 20:09:50 -07:00
vdev_raidz_math.c FreeBSD: disable neon usage 2020-08-27 16:06:35 -07:00
vdev_raidz.c Avoid posting duplicate zpool events 2020-09-09 10:26:00 -07:00
vdev_rebuild.c nowait synctask must succeed 2020-09-09 10:25:59 -07:00
vdev_removal.c Ignore special vdev ashift for spa ashift min/max 2020-10-16 13:05:34 -07:00
vdev_root.c Import vdev ashift optimization from FreeBSD 2020-08-21 12:53:17 -07:00
vdev_trim.c nowait synctask must succeed 2020-09-09 10:25:59 -07:00
vdev.c Update references to nonexistent man pages in code 2020-10-30 16:04:41 -07:00
zap_leaf.c Refactor dnode dirty context from dbuf_dirty 2020-02-26 16:09:17 -08:00
zap_micro.c Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
zap.c Rename refcount.h to zfs_refcount.h 2020-07-29 16:35:33 -07:00
zcp_get.c Add include files for prototypes 2020-06-18 12:21:25 -07:00
zcp_global.c OpenZFS 8600 - ZFS channel programs - snapshot 2018-02-08 15:29:24 -08:00
zcp_iter.c Fix typos in module/zfs/ 2019-09-02 17:56:41 -07:00
zcp_set.c Support setting user properties in a channel program 2020-02-14 13:41:42 -08:00
zcp_synctask.c filesystem_limit/snapshot_limit is incorrectly enforced against root 2020-07-11 17:18:02 -07:00
zcp.c Channel program may spuriously fail with "memory limit exhausted" 2020-11-12 09:02:00 -08:00
zfeature.c Throw const on some strings 2020-10-16 12:55:56 -07:00
zfs_byteswap.c Mark functions as static 2020-06-18 12:20:38 -07:00
zfs_fm.c Avoid posting duplicate zpool events 2020-09-09 10:26:00 -07:00
zfs_fuid.c FreeBSD: Fix UNIX permissions checking 2020-08-18 09:57:07 -07:00
zfs_ioctl.c Assertion failure when logging large output of channel program 2020-11-14 10:51:21 -08:00
zfs_log.c Throw const on some strings 2020-10-16 12:55:56 -07:00
zfs_onexit.c Remove deduplicated send/receive code 2020-04-23 10:06:57 -07:00
zfs_quota.c File incorrectly zeroed when receiving incremental stream that toggles -L 2020-06-09 10:41:01 -07:00
zfs_ratelimit.c Change checksum & IO delay ratelimit values 2018-03-04 17:34:51 -08:00
zfs_replay.c Simplify FreeBSD's locking requirements in zfs_replay.c 2020-01-22 17:55:56 -08:00
zfs_rlock.c Add a "try" operation for range locks 2020-07-06 11:53:31 -07:00
zfs_sa.c Add convenience wrappers for common uio usage 2020-06-14 10:09:55 -07:00
zil.c zil_parse: make callback parameters const 2020-10-16 13:01:53 -07:00
zio_checksum.c Mark functions as static 2020-06-18 12:20:38 -07:00
zio_compress.c Avoid symbol collision with in-kernel zstdlib 2020-08-24 12:20:41 -07:00
zio_inject.c Replace ASSERTV macro with compiler annotation 2019-12-05 12:37:00 -08:00
zio.c G/C data_alloc_arena 2020-11-11 18:46:22 -08:00
zle.c Add include files for prototypes 2020-06-18 12:21:25 -07:00
zrlock.c Remove dead code 2020-06-18 12:21:18 -07:00
zthr.c Retain thread name when resuming a zthr 2020-09-09 10:21:16 -07:00
zvol.c Fix dnode refcount tracking 2020-11-11 11:03:24 -08:00