If you, a toddler, or a toddler working for you pulls a disk from a pool unexpectedly, the pool will move to a “DEGRADED” state, and a
zpool status will advise you to take some more drastic steps, like replacing the device (which reformats the disk and resilvers from parity).
To recover somewhat more gracefully, you can try putting the disk back online and scrubbing the pool, which should correct any errors caused by disconnecting a disk while I/O operations are active.
zpool online <pool> <device ID>. For example:
zpool online zones c0t50014EE05910B3B1d0
zpool scrub <pool>. For example:
zpool scrub zones
zpool statusafter the scrub, do a
zpool clearon the affected device, then
zpool replaceprocedure on the failed disk. From here on out, you may be dealing with a more major fault, so be prepared to handle it more as you would a disk failure.