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computing:storage:zfs_replace_drive
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ZFS Failed Disk Replacement
https://docs.joyent.com/private-cloud/troubleshooting/disk-replacement
http://docs.oracle.com/cd/E19253-01/819-5461/gbcet/index.html
http://docs.oracle.com/cd/E19082-01/817-2271/ghzvx/index.html
Identify the problem drive and location exactly before replacing!
Power the server off when manipulating disk drives, if at all possible. This can go a long way towards eliminating self inflicted wounds!
The normal replacement procedure involves fixing the pool first, then removing the failed drive. Replace in-place if you must.
Napp-IT
Replace with spare:
Degraded → Offline → Replace
Replace in-place drive:
Degraded → Offline → Remove → Pull Bad Drive → Install New Drive → Initialize → Add to VDEV
Wait for the resilvering to finish then run a scrub job.
CLI
Replace a Failed Drive
Use
zpool replace to replace a failed drive. It is safest to replace a failed drive with another existent drive in another slot.
zpool replace <poolname> <faileddisk> <newdisk>
To replace a failed drive by replacing it in-place, it is best to shut down the server, remove and replace the failed drive, the use
zpool replace specifying only the drive being replaced.
zpool replace <poolname> <disk>
zpool detach will remove a drive from a VDEV, turning a mirrored VDEV into a single drive VDEV. Use zpool attach to recreate the mirror. In general, do not use these commands to replace a failed drive.
Replace Old Drives With New or Bigger
It is safest to
zpool attach an additional mirror to a mirrored VDEV (which adds redundancy) then remove the drive being upgraded afterwards.
zpool attach <poolname> <existingvdevmember> <newdrive> # Wait for it to resilver, which adds redundancy zpool detach <poolname> <drivebeingreplaced>
Spares
Usually a spare can replace a faulted disk but remains a spare. The idea behind this is that you replace the faulted disk, then replace the spare with the new and the spare remains a spare.
If you want to remove the spare property, first remove then replace.
computing/storage/zfs_replace_drive.1628095619.txt.gz · Last modified: 2021/08/04 10:46 by gcooper
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