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Forum Discussion
Anonymous
Sep 15, 2020RN31400: data DEAD, All drive showing NEW healthy on reboot
NAS was showing 'data Dead' on LCD on inspection after noticing that it wasn't working. Turned it off and restarted the box. Rebooted, admin suite has the notification 'Remove inactive volumes to u...
- Sep 19, 2020
I don't think the NAS retains any state on this, other than what btrfs itself retains.
What you need to do is forcibly mount the array, and perhaps also attempt to repair the file system. This isn't something I've ever needed to do, so I can't really offer much advice.
If you boot up in tech support mode, you could try
# rnutil chroot # btrfs device scan # btrfs fi show # mount -t btrfs -o ro,recovery /dev/md127 /data
If you just go into ssh with the NAS running, then you'd skip the rnutil command.
One user here successfully used that mount command to mount a missing volume. If it works then it will mount the volume read-only so you'd need to offload the data.
Anonymous
Sep 19, 2020StephenB No, didn't work booting in safemode and removing #1. The box decided at one point that 2 discs had failed and now will sit on it's hands. Disc 2,3,4 are fine although bay three might have an issue with the port. #1 had a bad sector and the box picked an terrible time to get it's knickers in a twist on port 3.
All I want to know is... can I ssh onto the box and tell it proceed with rebuild from 2,3,4. At this point, I don't care if I lose the data in the attempt. All I want is one attempt then I'll move on. If anyone can offer instruction (with absolute disclaimer, I won't blame anyone but myself).. I'd love to just attempt to recover data.
Alternatively if that is impossible on x-raid could you point me at DIY data recovery guides that may be relevant to x-raid devices.
StephenB
Sep 19, 2020Guru - Experienced User
I don't think the NAS retains any state on this, other than what btrfs itself retains.
What you need to do is forcibly mount the array, and perhaps also attempt to repair the file system. This isn't something I've ever needed to do, so I can't really offer much advice.
If you boot up in tech support mode, you could try
# rnutil chroot # btrfs device scan # btrfs fi show # mount -t btrfs -o ro,recovery /dev/md127 /data
If you just go into ssh with the NAS running, then you'd skip the rnutil command.
One user here successfully used that mount command to mount a missing volume. If it works then it will mount the volume read-only so you'd need to offload the data.
- AnonymousSep 21, 2020
Removed Disk 1. Booted up in tech support mode, done the following:
# rnutil chroot # btrfs device scan # btrfs fi show # mount -t btrfs -o ro,recovery /dev/md127 /data
Restarted in normal mode(volume degraded, as no redundancy) and used RAIDar to browse and pull off data. Data saved! Thank you very much!
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