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:
# zpool clear tank |
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.