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ZPOOL-REMOVE(8) System Manager's Manual ZPOOL-REMOVE(8) NAME zpool-remove -- remove devices from ZFS storage pool SYNOPSIS zpool remove [-npw] pool devicea| zpool remove -s pool DESCRIPTION zpool remove [-npw] pool devicea| Removes the specified device from the pool. This command supports removing hot spare, cache, log, and both mirrored and non-redundant primary top-level vdevs, including dedup and special vdevs. Top-level vdevs can only be removed if the primary pool storage does not contain a top-level raidz or draid vdev, all top-level vdevs have the same ashift size, and the keys for all encrypted datasets are loaded. Removing a top-level vdev reduces the total amount of space in the storage pool. The specified device will be evacuated by copying all allocated space from it to the other devices in the pool. In this case, the zpool remove command initiates the removal and re- turns, while the evacuation continues in the background. The re- moval progress can be monitored with zpool status. If an I/O error is encountered during the removal process it will be canceled. The device_removal feature flag must be enabled to remove a top-level vdev, see zpool-features(7). A mirrored top-level device (log or data) can be removed by speci- fying the top- level mirror for the same. Non-log devices or data devices that are part of a mirrored configuration can be removed using the zpool detach command. -n Do not actually perform the removal ("No-op"). Instead, print the estimated amount of memory that will be used by the mapping table after the removal completes. This is nonzero only for top-level vdevs. -p Used in conjunction with the -n flag, displays numbers as parsable (exact) values. -w Waits until the removal has completed before returning. zpool remove -s pool Stops and cancels an in-progress removal of a top-level vdev. EXAMPLES Example 1: Removing a Mirrored top-level (Log or Data) Device The following commands remove the mirrored log device mirror-2 and mirrored top-level data device mirror-1. Given this configuration: pool: tank state: ONLINE scrub: none requested config: NAME STATE READ WRITE CKSUM tank ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 sda ONLINE 0 0 0 sdb ONLINE 0 0 0 mirror-1 ONLINE 0 0 0 sdc ONLINE 0 0 0 sdd ONLINE 0 0 0 logs mirror-2 ONLINE 0 0 0 sde ONLINE 0 0 0 sdf ONLINE 0 0 0 The command to remove the mirrored log mirror-2 is: # zpool remove tank mirror-2 At this point, the log device no longer exists (both sides of the mirror have been removed): pool: tank state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM tank ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 sda ONLINE 0 0 0 sdb ONLINE 0 0 0 mirror-1 ONLINE 0 0 0 sdc ONLINE 0 0 0 sdd ONLINE 0 0 0 The command to remove the mirrored data mirror-1 is: # zpool remove tank mirror-1 After mirror-1 has been evacuated, the pool remains redundant, but the to- tal amount of space is reduced: pool: tank state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM tank ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 sda ONLINE 0 0 0 sdb ONLINE 0 0 0 SEE ALSO zpool-add(8), zpool-detach(8), zpool-labelclear(8), zpool-offline(8), zpool-replace(8), zpool-split(8) FreeBSD ports 15.1 November 19, 2024 ZPOOL-REMOVE(8)
NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | SEE ALSO
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