Clearing Storage Pool Device Errors
If a device is taken offline due to a failure that causes errors to
be listed in the zpool status output, you can clear the
error counts with the zpool clear command.
If specified with no arguments, this command clears all device errors
within the pool. For example:
If one or more devices are specified, this command only clear errors
associated with the specified devices. For example:
# zpool clear tank c1t0d0
For more information on clearing zpool errors, see Clearing Transient Errors.