Message: ZFS-8000-D3

titleZFS device failure
descriptionA ZFS device failed during normal operation.
detailsThe Message ID: ZFS-8000-D3 indicates a failed ZFS device. Take the documented action to resolve the problem.
impactThe fault tolerance of the pool may be affected.
responseAn attempt will be made to activate a hot spare if available.

A device within a ZFS pool failed and could not be reopened. Running 'zpool status -x' will provide more detailed information about the particular failure:

# zpool status -x
  pool: test
 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'.
 scrub: none requested

        NAME                  STATE     READ WRITE CKSUM
        test                  DEGRADED     0     0     0
          mirror              DEGRADED     0     0     0
            c0t0d0            ONLINE       0     0     0
            c0t0d1            FAULTED      0     0     0  corrupted data

errors: No known data errors.

The 'see:' field will direct you to a more detailed article explaining why the pool could not be opened.