pool: zroot
 state: DEGRADED
status: One or more devices could not be used because the label is missing or
        invalid.  Sufficient replicas exist for the pool to continue
        functioning in a degraded state.
action: Replace the device using 'zpool replace'.
   see: http://illumos.org/msg/ZFS-8000-4J
  scan: none requested
config:

        NAME                   STATE     READ WRITE CKSUM
        zroot                  DEGRADED     0     0     0
          mirror-0             DEGRADED     0     0     0
            95880792711398532  FAULTED      0     0     0  was /dev/ada0p3
            ada0p3             ONLINE       0     0     0