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armybill's avatar
armybill
Aspirant
Apr 19, 2018
Solved

Readynas 316 Volume is degraded (but all disks green)

So I have my system setup for X-Raid 5, Everythings been going good, but all of a sudden I have this volume degraded error. I have lost a disk before and it was pretty obvious that the disk had faile...
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  • StephenB's avatar
    StephenB
    Apr 22, 2018
    armybill wrote:

    Can we add this disk back into the volume and rsync it somehow?

     

     

    You can try clicking on the drive, and then clicking on "format".  After the format, it should be automatically added an XRAID volume.  With FlexRaid, you'd need to add it to the volume manually.

mdgm-ntgr's avatar
mdgm-ntgr
NETGEAR Employee Retired
Apr 22, 2018

Do you see recent error count increases in smart_history.log?

 

Especially for the disk that's /dev/sdb (the disk may/may not show in disk_info.log)

  • armybill's avatar
    armybill
    Aspirant
    Apr 22, 2018

    In the smart history log I can actually see the old HD that failed and all the errors it had under uncorrectable errors and ATA errors

     

    Under the HD that is shown as removed by the system, it has -1 for ioedc and 1 for cmd timeout, other than that its all 0s

     

    In the Volume log all the errors are also at 0

    • mdgm-ntgr's avatar
      mdgm-ntgr
      NETGEAR Employee Retired
      Apr 22, 2018

      Check e.g. kernel.log or systemd-journal.log for messages about the disk that is marked as failed.

      • armybill's avatar
        armybill
        Aspirant
        Apr 22, 2018

        Sorry I should be clear, the failed disk I referenced in the previous message is a disk that failed had been replaced about a month ago.

         

        As for the disk that is currently in the machine, but the mdstat log is showing as removed, there is no reference to it in the system journal and the kernal log is completely empty.

         

        Its been running fine for about a month or so since I replaced the failed drive, than pow, this message comes up. The drive that failed was 4TB, I replaced it with a 12TB, and that is the drive that the system is showing as removed. 

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