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Ty1974's avatar
Ty1974
Aspirant
Oct 22, 2015
Solved

ReadyNAS 4220 - Disk expansion Volume 'data' is 'DEGRADED'.

Skärmavbild 2015-10-22 kl. 10.10.40.png

Was expanding our X-RAID volume with the first of three disks. (Started with 7, and the goal is 10) 

The rebuild was started, but after 14 hours:

 Skärmavbild 2015-10-22 kl. 10.13.42.png

How can I solve this?

The only "fix" I´ve found here in the forum is to re-insert the disk. That feels a bit risk with a NAS for about 40 people....

Can I continue the expansion with the other 2 disks?

 

Aperently the support is no longer valid and it´s not even possible to send them an e-mail.

  • Missing some output there. What you have pasted is the partitions active in the swap array (md1) which we're not too concerned about in this case. We'll want to see the status of the data array, should be towards the top of the mdstat.log file and look something like this:

     

    Personalities : [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]
    md127 : active raid5 sdi3[0] sdf3[5] sde3[4] sdb3[3] sda3[2] sdj3[1]
    19510844160 blocks super 1.2 level 5, 64k chunk, algorithm 2 [6/6] [UUUUUU]

    md1 : active raid6 sda2[0] sdm2[11] sdl2[10] sdj2[9] sdi2[8] sdh2[7] sdg2[6] sdf2[5] sde2[4] sdd2[3] sdc2[2] sdb2[1]
    5237120 blocks super 1.2 level 6, 64k chunk, algorithm 2 [12/12] [UUUUUUUUUUUU]

    md0 : active raid1 sda1[0] sdm1[11] sdl1[10] sdj1[9] sdi1[8] sdh1[7] sdg1[6] sdf1[5] sde1[4] sdd1[3] sdc1[2] sdb1[1]
    4190208 blocks super 1.2 [12/12] [UUUUUUUUUUUU]

3 Replies

  • BrendanM's avatar
    BrendanM
    NETGEAR Expert

    If you download the system logs, what does the mdstat log file look like? That will give an indication of the status of the RAIDs.

    • Ty1974's avatar
      Ty1974
      Aspirant

      Thanks a million.

       

      I´ll guess it´s number 8 that´s causing the problem, the second disk we added.

      My conclusion is that everything is fine, I just have to add the last disk(?).

       

      Looks like this:

      Number Major Minor RaidDevice State
      0 8 66 0 active sync /dev/sde2
      1 8 82 1 active sync /dev/sdf2
      2 8 114 2 active sync /dev/sdh2
      3 8 130 3 active sync /dev/sdi2
      4 8 2 4 active sync /dev/sda2
      5 8 18 5 active sync /dev/sdb2
      6 8 50 6 active sync /dev/sdd2
      7 8 34 7 active sync /dev/sdc2
      8 0 0 8 removed

      • BrendanM's avatar
        BrendanM
        NETGEAR Expert

        Missing some output there. What you have pasted is the partitions active in the swap array (md1) which we're not too concerned about in this case. We'll want to see the status of the data array, should be towards the top of the mdstat.log file and look something like this:

         

        Personalities : [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]
        md127 : active raid5 sdi3[0] sdf3[5] sde3[4] sdb3[3] sda3[2] sdj3[1]
        19510844160 blocks super 1.2 level 5, 64k chunk, algorithm 2 [6/6] [UUUUUU]

        md1 : active raid6 sda2[0] sdm2[11] sdl2[10] sdj2[9] sdi2[8] sdh2[7] sdg2[6] sdf2[5] sde2[4] sdd2[3] sdc2[2] sdb2[1]
        5237120 blocks super 1.2 level 6, 64k chunk, algorithm 2 [12/12] [UUUUUUUUUUUU]

        md0 : active raid1 sda1[0] sdm1[11] sdl1[10] sdj1[9] sdi1[8] sdh1[7] sdg1[6] sdf1[5] sde1[4] sdd1[3] sdc1[2] sdb1[1]
        4190208 blocks super 1.2 [12/12] [UUUUUUUUUUUU]

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