|title||Too many I/O errors on ZFS device|
|description||The number of I/O errors associated with a ZFS device exceeded acceptable levels.|
|details||The Message ID: ZFS-8000-FD indicates a ZFS device experienced too many I/O errors to continue. Take the documented action to resolve the problem.|
|impact||The fault tolerance of the pool may be affected.|
|response||The device has been offlined and marked as faulted. An attempt will be made to activate a hot spare if available.|
A device within a ZFS pool experienced too many I/O errors. Run 'zpool status -x' to determine exactly which device failed and why:
# zpool status -x pool: test state: DEGRADED status: The number of I/O errors associated with a ZFS device exceeded acceptable levels. action: Replace the device using 'zpool replace'. see: https://illumos.org/msg/ZFS-8000-4J scrub: none requested config: NAME STATE READ WRITE CKSUM test DEGRADED 0 0 0 mirror DEGRADED 0 0 0 c0t0d0 ONLINE 0 0 0 c0t0d1 FAULTED 103 0 0 too many errors errors: No known data errors.
If the pool has available hot spares, then a hot spare will have been substituted. To repair the pool, replace the physical device in the system and issue a 'zpool replace' command:
# zpool replace test c0t0d1
To replace the disk with a different disk, specify the replacement disk as the second argument to 'zpool replace':
# zpool replace test c0t0d1 c0t0d2
This will begin resilvering data to the new device. Use 'zpool status' to monitor resilvering progress. When the resilvering completes, any hot spares will be removed and the pool will return to the healthy state.
If the device has been diagnosed in error, then run 'zpool clear' to clear the errors and the associated status. If the errors persist, the device may be diagnosed as faulty again. Replace the disk as described above, or contact your service provider.
|po-action||Run 'zpool status -x' and replace the bad device.|
|po-description||The number of I/O errors associated with a ZFS device exceeded acceptable levels.|
|po-impact||Fault tolerance of the pool may be compromised.|
|po-response||The device has been offlined and marked as faulted. An attempt will be made to activate a hot spare if available.|
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