How to repair a zpool that remains in a DEGRADED state despite there being no current or recent errors (Doc ID 1636482.1)

Last updated on JANUARY 13, 2025

Applies to:

Goal

This document describes what to do should a zpool report being in a degraded state even though no errors are actually reported. 

For example, the result of 'zpool status -v' may show the following:

pool: <pool>
state: DEGRADED
status: One or more devices has been diagnosed as degraded. An attempt
       was made to correct the error. Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
       using 'zpool clear' or 'fmadm repaired', or replace the device
       with 'zpool replace'.
 scan: none requested
config:

       NAME                     STATE     READ WRITE CKSUM
       <pool>                   DEGRADED     0     0     0
         c0t0017380001BF2121d0  DEGRADED     0     0     0

device details:

       c0t0017380001BF2121d0  DEGRADED   too many errors
       status: FMA has faulted this device.The device is degraded to
               maintain enough replica.
       action: Run 'fmadm faulty' for more information. Clear the errors
               using 'fmadm repaired'.

Solution

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