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b2255edcc0
This patch adds a new top-level vdev type called dRAID, which stands
for Distributed parity RAID. This pool configuration allows all dRAID
vdevs to participate when rebuilding to a distributed hot spare device.
This can substantially reduce the total time required to restore full
parity to pool with a failed device.
A dRAID pool can be created using the new top-level `draid` type.
Like `raidz`, the desired redundancy is specified after the type:
`draid[1,2,3]`. No additional information is required to create the
pool and reasonable default values will be chosen based on the number
of child vdevs in the dRAID vdev.
zpool create <pool> draid[1,2,3] <vdevs...>
Unlike raidz, additional optional dRAID configuration values can be
provided as part of the draid type as colon separated values. This
allows administrators to fully specify a layout for either performance
or capacity reasons. The supported options include:
zpool create <pool> \
draid[<parity>][:<data>d][:<children>c][:<spares>s] \
<vdevs...>
- draid[parity] - Parity level (default 1)
- draid[:<data>d] - Data devices per group (default 8)
- draid[:<children>c] - Expected number of child vdevs
- draid[:<spares>s] - Distributed hot spares (default 0)
Abbreviated example `zpool status` output for a 68 disk dRAID pool
with two distributed spares using special allocation classes.
```
pool: tank
state: ONLINE
config:
NAME STATE READ WRITE CKSUM
slag7 ONLINE 0 0 0
draid2:8d:68c:2s-0 ONLINE 0 0 0
L0 ONLINE 0 0 0
L1 ONLINE 0 0 0
...
U25 ONLINE 0 0 0
U26 ONLINE 0 0 0
spare-53 ONLINE 0 0 0
U27 ONLINE 0 0 0
draid2-0-0 ONLINE 0 0 0
U28 ONLINE 0 0 0
U29 ONLINE 0 0 0
...
U42 ONLINE 0 0 0
U43 ONLINE 0 0 0
special
mirror-1 ONLINE 0 0 0
L5 ONLINE 0 0 0
U5 ONLINE 0 0 0
mirror-2 ONLINE 0 0 0
L6 ONLINE 0 0 0
U6 ONLINE 0 0 0
spares
draid2-0-0 INUSE currently in use
draid2-0-1 AVAIL
```
When adding test coverage for the new dRAID vdev type the following
options were added to the ztest command. These options are leverages
by zloop.sh to test a wide range of dRAID configurations.
-K draid|raidz|random - kind of RAID to test
-D <value> - dRAID data drives per group
-S <value> - dRAID distributed hot spares
-R <value> - RAID parity (raidz or dRAID)
The zpool_create, zpool_import, redundancy, replacement and fault
test groups have all been updated provide test coverage for the
dRAID feature.
Co-authored-by: Isaac Huang <he.huang@intel.com>
Co-authored-by: Mark Maybee <mmaybee@cray.com>
Co-authored-by: Don Brady <don.brady@delphix.com>
Co-authored-by: Matthew Ahrens <mahrens@delphix.com>
Co-authored-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Mark Maybee <mmaybee@cray.com>
Reviewed-by: Matt Ahrens <matt@delphix.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #10102
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| .. | ||
| abd.c | ||
| aggsum.c | ||
| arc.c | ||
| blkptr.c | ||
| bplist.c | ||
| bpobj.c | ||
| bptree.c | ||
| bqueue.c | ||
| btree.c | ||
| dataset_kstats.c | ||
| dbuf_stats.c | ||
| dbuf.c | ||
| ddt_zap.c | ||
| ddt.c | ||
| dmu_diff.c | ||
| dmu_object.c | ||
| dmu_objset.c | ||
| dmu_recv.c | ||
| dmu_redact.c | ||
| dmu_send.c | ||
| dmu_traverse.c | ||
| dmu_tx.c | ||
| dmu_zfetch.c | ||
| dmu.c | ||
| dnode_sync.c | ||
| dnode.c | ||
| dsl_bookmark.c | ||
| dsl_crypt.c | ||
| dsl_dataset.c | ||
| dsl_deadlist.c | ||
| dsl_deleg.c | ||
| dsl_destroy.c | ||
| dsl_dir.c | ||
| dsl_pool.c | ||
| dsl_prop.c | ||
| dsl_scan.c | ||
| dsl_synctask.c | ||
| dsl_userhold.c | ||
| edonr_zfs.c | ||
| fm.c | ||
| gzip.c | ||
| hkdf.c | ||
| lz4.c | ||
| lzjb.c | ||
| Makefile.in | ||
| metaslab.c | ||
| mmp.c | ||
| multilist.c | ||
| objlist.c | ||
| pathname.c | ||
| range_tree.c | ||
| refcount.c | ||
| rrwlock.c | ||
| sa.c | ||
| sha256.c | ||
| skein_zfs.c | ||
| spa_boot.c | ||
| spa_checkpoint.c | ||
| spa_config.c | ||
| spa_errlog.c | ||
| spa_history.c | ||
| spa_log_spacemap.c | ||
| spa_misc.c | ||
| spa_stats.c | ||
| spa.c | ||
| space_map.c | ||
| space_reftree.c | ||
| THIRDPARTYLICENSE.cityhash | ||
| THIRDPARTYLICENSE.cityhash.descrip | ||
| txg.c | ||
| uberblock.c | ||
| unique.c | ||
| vdev_cache.c | ||
| vdev_draid_rand.c | ||
| vdev_draid.c | ||
| vdev_indirect_births.c | ||
| vdev_indirect_mapping.c | ||
| vdev_indirect.c | ||
| vdev_initialize.c | ||
| vdev_label.c | ||
| vdev_mirror.c | ||
| vdev_missing.c | ||
| vdev_queue.c | ||
| vdev_raidz_math_aarch64_neon_common.h | ||
| vdev_raidz_math_aarch64_neon.c | ||
| vdev_raidz_math_aarch64_neonx2.c | ||
| vdev_raidz_math_avx2.c | ||
| vdev_raidz_math_avx512bw.c | ||
| vdev_raidz_math_avx512f.c | ||
| vdev_raidz_math_impl.h | ||
| vdev_raidz_math_powerpc_altivec_common.h | ||
| vdev_raidz_math_powerpc_altivec.c | ||
| vdev_raidz_math_scalar.c | ||
| vdev_raidz_math_sse2.c | ||
| vdev_raidz_math_ssse3.c | ||
| vdev_raidz_math.c | ||
| vdev_raidz.c | ||
| vdev_rebuild.c | ||
| vdev_removal.c | ||
| vdev_root.c | ||
| vdev_trim.c | ||
| vdev.c | ||
| zap_leaf.c | ||
| zap_micro.c | ||
| zap.c | ||
| zcp_get.c | ||
| zcp_global.c | ||
| zcp_iter.c | ||
| zcp_set.c | ||
| zcp_synctask.c | ||
| zcp.c | ||
| zfeature.c | ||
| zfs_byteswap.c | ||
| zfs_fm.c | ||
| zfs_fuid.c | ||
| zfs_ioctl.c | ||
| zfs_log.c | ||
| zfs_onexit.c | ||
| zfs_quota.c | ||
| zfs_ratelimit.c | ||
| zfs_replay.c | ||
| zfs_rlock.c | ||
| zfs_sa.c | ||
| zfs_vnops.c | ||
| zil.c | ||
| zio_checksum.c | ||
| zio_compress.c | ||
| zio_inject.c | ||
| zio.c | ||
| zle.c | ||
| zrlock.c | ||
| zthr.c | ||
| zvol.c | ||