Oracle Solaris ZFS File System (MOSC)

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Mirrored Zpool (slow) Drive Status?

edited Feb 17, 2018 4:00AM in Oracle Solaris ZFS File System (MOSC) 6 commentsAnswered

Hello,

We noticed slow performance on one of our servers this morning and found that one of the drives in the mirrored zpool was reporting a status of slow. The iostats were showing ~100% busy on this one drive with a high asvc_t of over 500. We temporarily took the drive offline and performance has returned to normal. Is this an early sign the drive may be failing or is something else going on here?

  pool: int-pool

state: ONLINE

  scan: none requested

config:

        NAME        STATE     READ WRITE CKSUM

        int-pool    ONLINE       0     0     0

          mirror-0  ONLINE       0     0     0

            c2t2d0  ONLINE       0     0     0

            c2t3d0  ONLINE       0     0     0

          mirror-1  ONLINE       0     0     0

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