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claynz's avatar
claynz
Guide
Apr 14, 2022

Scrub Stuck on 56.67%

My NAS unit has been stuck on Scrub at 56.67% for a few days now, how do I fix this?

3 Replies


  • claynz wrote:

    My NAS unit has been stuck on Scrub at 56.67% for a few days now, how do I fix this?


    Rebooting will cancel it, though of course then you won't know what is hanging it up.

     

    You could query the status with ssh, if that is enabled.

    • claynz's avatar
      claynz
      Guide

      How do I query the status with ssh, I think it's enabled.

      • StephenB's avatar
        StephenB
        Guru

        claynz wrote:

        How do I query the status with ssh, I think it's enabled.


        Log in as root, using the NAS admin password.

         

        There are actually two scrubs going on in parallel - btrfs and RAID.

         

        To check the RAID status you can enter

        cat /proc/mdstat

        There should be a line in there that shows resync status (and estimated finish time).

         

        To check the BTRFS scrub status you can enter

        btrfs scrub status /data

        (assuming XRAID here - use your actual volume name if you are using FlexRAID).

         

         

        If you have disk spindown enabled, it might go faster if you disable it for a while.  Another thing you might consider is downloading the log zip file from the admin ui, and look for any btrfs or disk-related errors.

         

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