diff options
| -rw-r--r-- | man/man5/zfs-module-parameters.5 | 179 |
1 files changed, 172 insertions, 7 deletions
diff --git a/man/man5/zfs-module-parameters.5 b/man/man5/zfs-module-parameters.5 index 6cd6e9a5c..f94543959 100644 --- a/man/man5/zfs-module-parameters.5 +++ b/man/man5/zfs-module-parameters.5 @@ -107,6 +107,18 @@ Default value: \fB6\fR. .sp .ne 2 .na +\fBdmu_object_alloc_chunk_shift\fR (int) +.ad +.RS 12n +dnode slots allocated in a single operation as a power of 2. The default value +minimizes lock contention for the bulk operation performed. +.sp +Default value: \fB7\fR (128). +.RE + +.sp +.ne 2 +.na \fBdmu_prefetch_max\fR (int) .ad .RS 12n @@ -437,7 +449,19 @@ Default value: \fB16\fR. .sp .ne 2 .na -\fBvdev_ms_count_limit\fR (int) +\fBvdev_validate_skip\fR (int) +.ad +.RS 12n +Skip label validation steps during pool import. Changing is not recommended +unless you know what you are doing and are recovering a damaged label. +.sp +Default value: \fB0\fR. +.RE + +.sp +.ne 2 +.na +\fBzfs_vdev_ms_count_limit\fR (int) .ad .RS 12n Practical upper limit of total metaslabs per top-level vdev. @@ -689,6 +713,31 @@ Default value: \fB2\fR. .sp .ne 2 .na +\fBzfs_abd_scatter_enabled\fR (int) +.ad +.RS 12n +Enables ARC from using scatter/gather lists and forces all allocations to be +linear in kernel memory. Disabling can improve performance in some code paths +at the expense of fragmented kernel memory. +.sp +Default value: \fB1\fR. +.RE + +.sp +.ne 2 +.na +\fBzfs_abd_scatter_max_order\fR (iunt) +.ad +.RS 12n +Maximum number of consecutive memory pages allocated in a single block for +scatter/gather lists. Default value is specified by the kernel itself. +.sp +Default value: \fB10\fR at the time of this writing. +.RE + +.sp +.ne 2 +.na \fBzfs_abd_scatter_min_size\fR (uint) .ad .RS 12n @@ -1072,7 +1121,7 @@ Use \fB1\fR for yes (default) and \fB0\fR for no. .sp .ne 2 .na -\fBzfs_checksums_per_second\fR (int) +\fBzfs_checksum_events_per_second\fR (uint) .ad .RS 12n Rate limit checksum events to this many per second. Note that this should @@ -1100,6 +1149,19 @@ Default value: \fB5\fR%. .sp .ne 2 .na +\fBzfs_condense_indirect_commit_entry_delay_ms\fR (int) +.ad +.RS 12n +Vdev indirection layer (used for device removal) sleeps for this many +milliseconds during mapping generation. Intended for use with the test suite +to throttle vdev removal speed. +.sp +Default value: \fB0\fR (no throttle). +.RE + +.sp +.ne 2 +.na \fBzfs_condense_indirect_vdevs_enable\fR (int) .ad .RS 12n @@ -1302,6 +1364,48 @@ Default value: \fB500,000\fR. .sp .ne 2 .na +\fBzfs_disable_ivset_guid_check\fR (int) +.ad +.RS 12n +Disables requirement for IVset guids to be present and match when doing a raw +receive of encrypted datasets. Intended for users whose pools were created with +ZFS on Linux pre-release versions and now have compatibility issues. +.sp +Default value: \fB0\fR. +.RE + +.sp +.ne 2 +.na +\fBzfs_key_max_salt_uses\fR (ulong) +.ad +.RS 12n +Maximum number of uses of a single salt value before generating a new one for +encrypted datasets. The default value is also the maximum that will be +accepted. +.sp +Default value: \fB400,000,000\fR. +.RE + +.sp +.ne 2 +.na +\fBzfs_object_mutex_size\fR (uint) +.ad +.RS 12n +Size of the znode hashtable used for holds. + +Due to the need to hold locks on objects that may not exist yet, kernel mutexes +are not created per-object and instead a hashtable is used where collisions +will result in objects waiting when there is not actually contention on the +same object. +.sp +Default value: \fB64\fR. +.RE + +.sp +.ne 2 +.na \fBzfs_slow_io_events_per_second\fR (int) .ad .RS 12n @@ -1948,6 +2052,18 @@ Default value: \fB1,000\fR. .sp .ne 2 .na +\fBzfs_obsolete_min_time_ms\fR (int) +.ad +.RS 12n +Simlar to \fBzfs_free_min_time_ms\fR but for cleanup of old indirection records +for removed vdevs. +.sp +Default value: \fB500\fR. +.RE + +.sp +.ne 2 +.na \fBzfs_immediate_write_sz\fR (long) .ad .RS 12n @@ -2580,6 +2696,18 @@ Default value: \fB16,777,216\fR (16MB). .sp .ne 2 .na +\fBzfs_resilver_disable_defer\fR (int) +.ad +.RS 12n +Disables the \fBresilver_defer\fR feature, causing an operation that would +start a resilver to restart one in progress immediately. +.sp +Default value: \fB0\fR (feature enabled). +.RE + +.sp +.ne 2 +.na \fBzfs_resilver_min_time_ms\fR (int) .ad .RS 12n @@ -2725,6 +2853,31 @@ Default value: \fB20\fR which is 5% of the hard limit (1/20). .sp .ne 2 .na +\fBzfs_scan_strict_mem_lim\fR (int) +.ad +.RS 12n +Enforces tight memory limits on pool scans when a sequential scan is in +progress. When disabled the memory limit may be exceeded by fast disks. +.sp +Default value: \fB0\fR. +.RE + +.sp +.ne 2 +.na +\fBzfs_scan_suspend_progress\fR (int) +.ad +.RS 12n +Freezes a scrub/resilver in progress without actually pausing it. Intended for +testing/debugging. +.sp +Default value: \fB0\fR. +.RE + + +.sp +.ne 2 +.na \fBzfs_scan_vdev_limit\fR (int) .ad .RS 12n @@ -2932,7 +3085,7 @@ Default value: \fB75\fR%. .sp .ne 2 .na -\fBzfs_trim_extent_bytes_max\fR (unsigned int) +\fBzfs_trim_extent_bytes_max\fR (uint) .ad .RS 12n Maximum size of TRIM command. Ranges larger than this will be split in to @@ -2945,7 +3098,7 @@ Default value: \fB134,217,728\fR. .sp .ne 2 .na -\fBzfs_trim_extent_bytes_min\fR (unsigned int) +\fBzfs_trim_extent_bytes_min\fR (uint) .ad .RS 12n Minimum size of TRIM commands. TRIM ranges smaller than this will be skipped @@ -2959,7 +3112,7 @@ Default value: \fB32,768\fR. .sp .ne 2 .na -\fBzfs_trim_metaslab_skip\fR (unsigned int) +\fBzfs_trim_metaslab_skip\fR (uint) .ad .RS 12n Skip uninitialized metaslabs during the TRIM process. This option is useful @@ -2975,7 +3128,7 @@ Default value: \fB0\fR. .sp .ne 2 .na -\fBzfs_trim_queue_limit\fR (unsigned int) +\fBzfs_trim_queue_limit\fR (uint) .ad .RS 12n Maximum number of queued TRIMs outstanding per leaf vdev. The number of @@ -2989,7 +3142,7 @@ Default value: \fB10\fR. .sp .ne 2 .na -\fBzfs_trim_txg_batch\fR (unsigned int) +\fBzfs_trim_txg_batch\fR (uint) .ad .RS 12n The number of transaction groups worth of frees which should be aggregated @@ -3228,6 +3381,18 @@ Default value: \fBfastest\fR. .sp .ne 2 .na +\fBzfs_vdev_scheduler\fR (charp) +.ad +.RS 12n +\fBDEPRECATED\fR: This option exists for compatibility with older user +configurations. It does nothing except print a warning to the kernel log if +set. +.sp +.RE + +.sp +.ne 2 +.na \fBzfs_zevent_cols\fR (int) .ad .RS 12n |