/* * Copyright (c) 2020 iXsystems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* BEGIN CSTYLED */ SYSCTL_DECL(_vfs_zfs); SYSCTL_NODE(_vfs_zfs, OID_AUTO, arc, CTLFLAG_RW, 0, "ZFS adaptive replacement cache"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, condense, CTLFLAG_RW, 0, "ZFS condense"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, dbuf, CTLFLAG_RW, 0, "ZFS disk buf cache"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, dbuf_cache, CTLFLAG_RW, 0, "ZFS disk buf cache"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, deadman, CTLFLAG_RW, 0, "ZFS deadman"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, dedup, CTLFLAG_RW, 0, "ZFS dedup"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, l2arc, CTLFLAG_RW, 0, "ZFS l2arc"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, livelist, CTLFLAG_RW, 0, "ZFS livelist"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, lua, CTLFLAG_RW, 0, "ZFS lua"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, metaslab, CTLFLAG_RW, 0, "ZFS metaslab"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, mg, CTLFLAG_RW, 0, "ZFS metaslab group"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, multihost, CTLFLAG_RW, 0, "ZFS multihost protection"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, prefetch, CTLFLAG_RW, 0, "ZFS prefetch"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, reconstruct, CTLFLAG_RW, 0, "ZFS reconstruct"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, recv, CTLFLAG_RW, 0, "ZFS receive"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, send, CTLFLAG_RW, 0, "ZFS send"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, spa, CTLFLAG_RW, 0, "ZFS space allocation"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, trim, CTLFLAG_RW, 0, "ZFS TRIM"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, txg, CTLFLAG_RW, 0, "ZFS transaction group"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, vdev, CTLFLAG_RW, 0, "ZFS VDEV"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, vnops, CTLFLAG_RW, 0, "ZFS VNOPS"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, zevent, CTLFLAG_RW, 0, "ZFS event"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, zil, CTLFLAG_RW, 0, "ZFS ZIL"); SYSCTL_NODE(_vfs_zfs, OID_AUTO, zio, CTLFLAG_RW, 0, "ZFS ZIO"); SYSCTL_NODE(_vfs_zfs_livelist, OID_AUTO, condense, CTLFLAG_RW, 0, "ZFS livelist condense"); SYSCTL_NODE(_vfs_zfs_vdev, OID_AUTO, cache, CTLFLAG_RW, 0, "ZFS VDEV Cache"); SYSCTL_NODE(_vfs_zfs_vdev, OID_AUTO, file, CTLFLAG_RW, 0, "ZFS VDEV file"); SYSCTL_NODE(_vfs_zfs_vdev, OID_AUTO, mirror, CTLFLAG_RD, 0, "ZFS VDEV mirror"); SYSCTL_DECL(_vfs_zfs_version); SYSCTL_CONST_STRING(_vfs_zfs_version, OID_AUTO, module, CTLFLAG_RD, (ZFS_META_VERSION "-" ZFS_META_RELEASE), "OpenZFS module version"); extern arc_state_t ARC_anon; extern arc_state_t ARC_mru; extern arc_state_t ARC_mru_ghost; extern arc_state_t ARC_mfu; extern arc_state_t ARC_mfu_ghost; extern arc_state_t ARC_l2c_only; /* * minimum lifespan of a prefetch block in clock ticks * (initialized in arc_init()) */ /* arc.c */ /* legacy compat */ extern uint64_t l2arc_write_max; /* def max write size */ extern uint64_t l2arc_write_boost; /* extra warmup write */ extern uint64_t l2arc_headroom; /* # of dev writes */ extern uint64_t l2arc_headroom_boost; extern uint64_t l2arc_feed_secs; /* interval seconds */ extern uint64_t l2arc_feed_min_ms; /* min interval msecs */ extern int l2arc_noprefetch; /* don't cache prefetch bufs */ extern int l2arc_feed_again; /* turbo warmup */ extern int l2arc_norw; /* no reads during writes */ SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, l2arc_write_max, CTLFLAG_RW, &l2arc_write_max, 0, "max write size (LEGACY)"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, l2arc_write_boost, CTLFLAG_RW, &l2arc_write_boost, 0, "extra write during warmup (LEGACY)"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, l2arc_headroom, CTLFLAG_RW, &l2arc_headroom, 0, "number of dev writes (LEGACY)"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, l2arc_feed_secs, CTLFLAG_RW, &l2arc_feed_secs, 0, "interval seconds (LEGACY)"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, l2arc_feed_min_ms, CTLFLAG_RW, &l2arc_feed_min_ms, 0, "min interval milliseconds (LEGACY)"); SYSCTL_INT(_vfs_zfs, OID_AUTO, l2arc_noprefetch, CTLFLAG_RW, &l2arc_noprefetch, 0, "don't cache prefetch bufs (LEGACY)"); SYSCTL_INT(_vfs_zfs, OID_AUTO, l2arc_feed_again, CTLFLAG_RW, &l2arc_feed_again, 0, "turbo warmup (LEGACY)"); SYSCTL_INT(_vfs_zfs, OID_AUTO, l2arc_norw, CTLFLAG_RW, &l2arc_norw, 0, "no reads during writes (LEGACY)"); #if 0 extern int zfs_compressed_arc_enabled; SYSCTL_INT(_vfs_zfs, OID_AUTO, compressed_arc_enabled, CTLFLAG_RW, &zfs_compressed_arc_enabled, 1, "compressed arc buffers (LEGACY)"); #endif SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, anon_size, CTLFLAG_RD, &ARC_anon.arcs_size.rc_count, 0, "size of anonymous state"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, anon_metadata_esize, CTLFLAG_RD, &ARC_anon.arcs_esize[ARC_BUFC_METADATA].rc_count, 0, "size of anonymous state"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, anon_data_esize, CTLFLAG_RD, &ARC_anon.arcs_esize[ARC_BUFC_DATA].rc_count, 0, "size of anonymous state"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, mru_size, CTLFLAG_RD, &ARC_mru.arcs_size.rc_count, 0, "size of mru state"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, mru_metadata_esize, CTLFLAG_RD, &ARC_mru.arcs_esize[ARC_BUFC_METADATA].rc_count, 0, "size of metadata in mru state"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, mru_data_esize, CTLFLAG_RD, &ARC_mru.arcs_esize[ARC_BUFC_DATA].rc_count, 0, "size of data in mru state"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, mru_ghost_size, CTLFLAG_RD, &ARC_mru_ghost.arcs_size.rc_count, 0, "size of mru ghost state"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, mru_ghost_metadata_esize, CTLFLAG_RD, &ARC_mru_ghost.arcs_esize[ARC_BUFC_METADATA].rc_count, 0, "size of metadata in mru ghost state"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, mru_ghost_data_esize, CTLFLAG_RD, &ARC_mru_ghost.arcs_esize[ARC_BUFC_DATA].rc_count, 0, "size of data in mru ghost state"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, mfu_size, CTLFLAG_RD, &ARC_mfu.arcs_size.rc_count, 0, "size of mfu state"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, mfu_metadata_esize, CTLFLAG_RD, &ARC_mfu.arcs_esize[ARC_BUFC_METADATA].rc_count, 0, "size of metadata in mfu state"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, mfu_data_esize, CTLFLAG_RD, &ARC_mfu.arcs_esize[ARC_BUFC_DATA].rc_count, 0, "size of data in mfu state"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, mfu_ghost_size, CTLFLAG_RD, &ARC_mfu_ghost.arcs_size.rc_count, 0, "size of mfu ghost state"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, mfu_ghost_metadata_esize, CTLFLAG_RD, &ARC_mfu_ghost.arcs_esize[ARC_BUFC_METADATA].rc_count, 0, "size of metadata in mfu ghost state"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, mfu_ghost_data_esize, CTLFLAG_RD, &ARC_mfu_ghost.arcs_esize[ARC_BUFC_DATA].rc_count, 0, "size of data in mfu ghost state"); SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, l2c_only_size, CTLFLAG_RD, &ARC_l2c_only.arcs_size.rc_count, 0, "size of mru state"); static int sysctl_vfs_zfs_arc_no_grow_shift(SYSCTL_HANDLER_ARGS) { int err, val; val = arc_no_grow_shift; err = sysctl_handle_int(oidp, &val, 0, req); if (err != 0 || req->newptr == NULL) return (err); if (val < 0 || val >= arc_shrink_shift) return (EINVAL); arc_no_grow_shift = val; return (0); } SYSCTL_PROC(_vfs_zfs, OID_AUTO, arc_no_grow_shift, CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, NULL, sizeof (int), sysctl_vfs_zfs_arc_no_grow_shift, "I", "log2(fraction of ARC which must be free to allow growing)"); int param_set_arc_long(SYSCTL_HANDLER_ARGS) { int err; err = sysctl_handle_long(oidp, arg1, 0, req); if (err != 0 || req->newptr == NULL) return (err); arc_tuning_update(B_TRUE); return (0); } int param_set_arc_int(SYSCTL_HANDLER_ARGS) { int err; err = sysctl_handle_int(oidp, arg1, 0, req); if (err != 0 || req->newptr == NULL) return (err); arc_tuning_update(B_TRUE); return (0); } SYSCTL_PROC(_vfs_zfs, OID_AUTO, arc_min, CTLTYPE_ULONG | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, &zfs_arc_min, sizeof (zfs_arc_min), param_set_arc_long, "LU", "min arc size (LEGACY)"); SYSCTL_PROC(_vfs_zfs, OID_AUTO, arc_max, CTLTYPE_ULONG | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, &zfs_arc_max, sizeof (zfs_arc_max), param_set_arc_long, "LU", "max arc size (LEGACY)"); /* dbuf.c */ /* dmu.c */ /* dmu_zfetch.c */ SYSCTL_NODE(_vfs_zfs, OID_AUTO, zfetch, CTLFLAG_RW, 0, "ZFS ZFETCH (LEGACY)"); /* max bytes to prefetch per stream (default 8MB) */ extern uint32_t zfetch_max_distance; SYSCTL_UINT(_vfs_zfs_zfetch, OID_AUTO, max_distance, CTLFLAG_RWTUN, &zfetch_max_distance, 0, "Max bytes to prefetch per stream (LEGACY)"); /* max bytes to prefetch indirects for per stream (default 64MB) */ extern uint32_t zfetch_max_idistance; SYSCTL_UINT(_vfs_zfs_zfetch, OID_AUTO, max_idistance, CTLFLAG_RWTUN, &zfetch_max_idistance, 0, "Max bytes to prefetch indirects for per stream (LEGACY)"); /* dsl_pool.c */ /* dnode.c */ extern int zfs_default_bs; SYSCTL_INT(_vfs_zfs, OID_AUTO, default_bs, CTLFLAG_RWTUN, &zfs_default_bs, 0, "Default dnode block shift"); extern int zfs_default_ibs; SYSCTL_INT(_vfs_zfs, OID_AUTO, default_ibs, CTLFLAG_RWTUN, &zfs_default_ibs, 0, "Default dnode indirect block shift"); /* dsl_scan.c */ /* metaslab.c */ /* * In pools where the log space map feature is not enabled we touch * multiple metaslabs (and their respective space maps) with each * transaction group. Thus, we benefit from having a small space map * block size since it allows us to issue more I/O operations scattered * around the disk. So a sane default for the space map block size * is 8~16K. */ extern int zfs_metaslab_sm_blksz_no_log; SYSCTL_INT(_vfs_zfs_metaslab, OID_AUTO, sm_blksz_no_log, CTLFLAG_RDTUN, &zfs_metaslab_sm_blksz_no_log, 0, "Block size for space map in pools with log space map disabled. " "Power of 2 and greater than 4096."); /* * When the log space map feature is enabled, we accumulate a lot of * changes per metaslab that are flushed once in a while so we benefit * from a bigger block size like 128K for the metaslab space maps. */ extern int zfs_metaslab_sm_blksz_with_log; SYSCTL_INT(_vfs_zfs_metaslab, OID_AUTO, sm_blksz_with_log, CTLFLAG_RDTUN, &zfs_metaslab_sm_blksz_with_log, 0, "Block size for space map in pools with log space map enabled. " "Power of 2 and greater than 4096."); /* * The in-core space map representation is more compact than its on-disk form. * The zfs_condense_pct determines how much more compact the in-core * space map representation must be before we compact it on-disk. * Values should be greater than or equal to 100. */ extern int zfs_condense_pct; SYSCTL_INT(_vfs_zfs, OID_AUTO, condense_pct, CTLFLAG_RWTUN, &zfs_condense_pct, 0, "Condense on-disk spacemap when it is more than this many percents" " of in-memory counterpart"); extern int zfs_remove_max_segment; SYSCTL_INT(_vfs_zfs, OID_AUTO, remove_max_segment, CTLFLAG_RWTUN, &zfs_remove_max_segment, 0, "Largest contiguous segment ZFS will attempt to" " allocate when removing a device"); extern int zfs_removal_suspend_progress; SYSCTL_INT(_vfs_zfs, OID_AUTO, removal_suspend_progress, CTLFLAG_RWTUN, &zfs_removal_suspend_progress, 0, "Ensures certain actions can happen while" " in the middle of a removal"); /* * Minimum size which forces the dynamic allocator to change * it's allocation strategy. Once the space map cannot satisfy * an allocation of this size then it switches to using more * aggressive strategy (i.e search by size rather than offset). */ extern uint64_t metaslab_df_alloc_threshold; SYSCTL_QUAD(_vfs_zfs_metaslab, OID_AUTO, df_alloc_threshold, CTLFLAG_RWTUN, &metaslab_df_alloc_threshold, 0, "Minimum size which forces the dynamic allocator to change it's allocation strategy"); /* * The minimum free space, in percent, which must be available * in a space map to continue allocations in a first-fit fashion. * Once the space map's free space drops below this level we dynamically * switch to using best-fit allocations. */ extern int metaslab_df_free_pct; SYSCTL_INT(_vfs_zfs_metaslab, OID_AUTO, df_free_pct, CTLFLAG_RWTUN, &metaslab_df_free_pct, 0, "The minimum free space, in percent, which must be available in a " "space map to continue allocations in a first-fit fashion"); /* * Percentage of all cpus that can be used by the metaslab taskq. */ extern int metaslab_load_pct; SYSCTL_INT(_vfs_zfs_metaslab, OID_AUTO, load_pct, CTLFLAG_RWTUN, &metaslab_load_pct, 0, "Percentage of cpus that can be used by the metaslab taskq"); /* * Max number of metaslabs per group to preload. */ extern int metaslab_preload_limit; SYSCTL_INT(_vfs_zfs_metaslab, OID_AUTO, preload_limit, CTLFLAG_RWTUN, &metaslab_preload_limit, 0, "Max number of metaslabs per group to preload"); /* spa.c */ extern int zfs_ccw_retry_interval; SYSCTL_INT(_vfs_zfs, OID_AUTO, ccw_retry_interval, CTLFLAG_RWTUN, &zfs_ccw_retry_interval, 0, "Configuration cache file write, retry after failure, interval (seconds)"); extern uint64_t zfs_max_missing_tvds_cachefile; SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, max_missing_tvds_cachefile, CTLFLAG_RWTUN, &zfs_max_missing_tvds_cachefile, 0, "allow importing pools with missing top-level vdevs in cache file"); extern uint64_t zfs_max_missing_tvds_scan; SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, max_missing_tvds_scan, CTLFLAG_RWTUN, &zfs_max_missing_tvds_scan, 0, "allow importing pools with missing top-level vdevs during scan"); /* spa_misc.c */ extern int zfs_flags; static int sysctl_vfs_zfs_debug_flags(SYSCTL_HANDLER_ARGS) { int err, val; val = zfs_flags; err = sysctl_handle_int(oidp, &val, 0, req); if (err != 0 || req->newptr == NULL) return (err); /* * ZFS_DEBUG_MODIFY must be enabled prior to boot so all * arc buffers in the system have the necessary additional * checksum data. However, it is safe to disable at any * time. */ if (!(zfs_flags & ZFS_DEBUG_MODIFY)) val &= ~ZFS_DEBUG_MODIFY; zfs_flags = val; return (0); } SYSCTL_PROC(_vfs_zfs, OID_AUTO, debugflags, CTLTYPE_UINT | CTLFLAG_MPSAFE | CTLFLAG_RWTUN, NULL, 0, sysctl_vfs_zfs_debug_flags, "IU", "Debug flags for ZFS testing."); int param_set_deadman_synctime(SYSCTL_HANDLER_ARGS) { unsigned long val; int err; val = zfs_deadman_synctime_ms; err = sysctl_handle_long(oidp, &val, 0, req); if (err != 0 || req->newptr == NULL) return (err); zfs_deadman_synctime_ms = val; spa_set_deadman_synctime(MSEC2NSEC(zfs_deadman_synctime_ms)); return (0); } int param_set_deadman_ziotime(SYSCTL_HANDLER_ARGS) { unsigned long val; int err; val = zfs_deadman_ziotime_ms; err = sysctl_handle_long(oidp, &val, 0, req); if (err != 0 || req->newptr == NULL) return (err); zfs_deadman_ziotime_ms = val; spa_set_deadman_ziotime(MSEC2NSEC(zfs_deadman_synctime_ms)); return (0); } int param_set_deadman_failmode(SYSCTL_HANDLER_ARGS) { char buf[16]; int rc; if (req->newptr == NULL) strlcpy(buf, zfs_deadman_failmode, sizeof (buf)); rc = sysctl_handle_string(oidp, buf, sizeof (buf), req); if (rc || req->newptr == NULL) return (rc); if (strcmp(buf, zfs_deadman_failmode) == 0) return (0); if (!strcmp(buf, "wait")) zfs_deadman_failmode = "wait"; if (!strcmp(buf, "continue")) zfs_deadman_failmode = "continue"; if (!strcmp(buf, "panic")) zfs_deadman_failmode = "panic"; return (-param_set_deadman_failmode_common(buf)); } /* spacemap.c */ extern int space_map_ibs; SYSCTL_INT(_vfs_zfs, OID_AUTO, space_map_ibs, CTLFLAG_RWTUN, &space_map_ibs, 0, "Space map indirect block shift"); /* vdev.c */ int param_set_min_auto_ashift(SYSCTL_HANDLER_ARGS) { uint64_t val; int err; val = zfs_vdev_min_auto_ashift; err = sysctl_handle_64(oidp, &val, 0, req); if (err != 0 || req->newptr == NULL) return (SET_ERROR(err)); if (val < ASHIFT_MIN || val > zfs_vdev_max_auto_ashift) return (SET_ERROR(EINVAL)); zfs_vdev_min_auto_ashift = val; return (0); } int param_set_max_auto_ashift(SYSCTL_HANDLER_ARGS) { uint64_t val; int err; val = zfs_vdev_max_auto_ashift; err = sysctl_handle_64(oidp, &val, 0, req); if (err != 0 || req->newptr == NULL) return (SET_ERROR(err)); if (val > ASHIFT_MAX || val < zfs_vdev_min_auto_ashift) return (SET_ERROR(EINVAL)); zfs_vdev_max_auto_ashift = val; return (0); } SYSCTL_PROC(_vfs_zfs, OID_AUTO, min_auto_ashift, CTLTYPE_U64 | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, &zfs_vdev_min_auto_ashift, sizeof (zfs_vdev_min_auto_ashift), param_set_min_auto_ashift, "QU", "Min ashift used when creating new top-level vdev. (LEGACY)"); SYSCTL_PROC(_vfs_zfs, OID_AUTO, max_auto_ashift, CTLTYPE_U64 | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, &zfs_vdev_max_auto_ashift, sizeof (zfs_vdev_max_auto_ashift), param_set_max_auto_ashift, "QU", "Max ashift used when optimizing for logical -> physical sector size on " "new top-level vdevs. (LEGACY)"); /* * Since the DTL space map of a vdev is not expected to have a lot of * entries, we default its block size to 4K. */ extern int zfs_vdev_dtl_sm_blksz; SYSCTL_INT(_vfs_zfs, OID_AUTO, dtl_sm_blksz, CTLFLAG_RDTUN, &zfs_vdev_dtl_sm_blksz, 0, "Block size for DTL space map. Power of 2 and greater than 4096."); /* * vdev-wide space maps that have lots of entries written to them at * the end of each transaction can benefit from a higher I/O bandwidth * (e.g. vdev_obsolete_sm), thus we default their block size to 128K. */ extern int zfs_vdev_standard_sm_blksz; SYSCTL_INT(_vfs_zfs, OID_AUTO, standard_sm_blksz, CTLFLAG_RDTUN, &zfs_vdev_standard_sm_blksz, 0, "Block size for standard space map. Power of 2 and greater than 4096."); extern int vdev_validate_skip; SYSCTL_INT(_vfs_zfs, OID_AUTO, validate_skip, CTLFLAG_RDTUN, &vdev_validate_skip, 0, "Enable to bypass vdev_validate()."); /* vdev_cache.c */ /* vdev_mirror.c */ /* * The load configuration settings below are tuned by default for * the case where all devices are of the same rotational type. * * If there is a mixture of rotating and non-rotating media, setting * non_rotating_seek_inc to 0 may well provide better results as it * will direct more reads to the non-rotating vdevs which are more * likely to have a higher performance. */ /* vdev_queue.c */ #define ZFS_VDEV_QUEUE_KNOB_MIN(name) \ extern uint32_t zfs_vdev_ ## name ## _min_active; \ SYSCTL_UINT(_vfs_zfs_vdev, OID_AUTO, name ## _min_active, CTLFLAG_RWTUN,\ &zfs_vdev_ ## name ## _min_active, 0, \ "Initial number of I/O requests of type " #name \ " active for each device"); #define ZFS_VDEV_QUEUE_KNOB_MAX(name) \ extern uint32_t zfs_vdev_ ## name ## _max_active; \ SYSCTL_UINT(_vfs_zfs_vdev, OID_AUTO, name ## _max_active, CTLFLAG_RWTUN, \ &zfs_vdev_ ## name ## _max_active, 0, \ "Maximum number of I/O requests of type " #name \ " active for each device"); #undef ZFS_VDEV_QUEUE_KNOB extern uint32_t zfs_vdev_max_active; SYSCTL_UINT(_vfs_zfs, OID_AUTO, top_maxinflight, CTLFLAG_RWTUN, &zfs_vdev_max_active, 0, "The maximum number of I/Os of all types active for each device. (LEGACY)"); extern int zfs_vdev_def_queue_depth; SYSCTL_INT(_vfs_zfs_vdev, OID_AUTO, def_queue_depth, CTLFLAG_RWTUN, &zfs_vdev_def_queue_depth, 0, "Default queue depth for each allocator"); /*extern uint64_t zfs_multihost_history; SYSCTL_UQUAD(_vfs_zfs, OID_AUTO, multihost_history, CTLFLAG_RWTUN, &zfs_multihost_history, 0, "Historical staticists for the last N multihost updates");*/ #ifdef notyet SYSCTL_INT(_vfs_zfs_vdev, OID_AUTO, trim_on_init, CTLFLAG_RW, &vdev_trim_on_init, 0, "Enable/disable full vdev trim on initialisation"); #endif /* zio.c */ #if defined(__LP64__) int zio_use_uma = 1; #else int zio_use_uma = 0; #endif SYSCTL_INT(_vfs_zfs_zio, OID_AUTO, use_uma, CTLFLAG_RDTUN, &zio_use_uma, 0, "Use uma(9) for ZIO allocations"); SYSCTL_INT(_vfs_zfs_zio, OID_AUTO, exclude_metadata, CTLFLAG_RDTUN, &zio_exclude_metadata, 0, "Exclude metadata buffers from dumps as well"); int param_set_slop_shift(SYSCTL_HANDLER_ARGS) { int val; int err; val = *(int *)arg1; err = sysctl_handle_int(oidp, &val, 0, req); if (err != 0 || req->newptr == NULL) return (err); if (val < 1 || val > 31) return (EINVAL); *(int *)arg1 = val; return (0); } int param_set_multihost_interval(SYSCTL_HANDLER_ARGS) { int err; err = sysctl_handle_long(oidp, arg1, 0, req); if (err != 0 || req->newptr == NULL) return (err); if (spa_mode_global != SPA_MODE_UNINIT) mmp_signal_all_threads(); return (0); }