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Forum Discussion
roryt
Nov 03, 2016Aspirant
ReadyNAS RN214 corruption on BTRFS
4x4TB in X-RAID, holds about 4TB in daily data and 1TB in daily snapshots. Used to work fine, when suddenly last Saturday it crashed. The shares disappeared. In a move to find a solution (and since I...
kohdee
Nov 07, 2016NETGEAR Expert
If you could mount the file system read-only, you could do something as simple as an rsync to your destination.
Additionally, you could also use btrfs restore to dump files (and snapshots, if you want them).
kohdee
Nov 07, 2016NETGEAR Expert
Also, qgroup generation mismatch, marked as inconsistent essentially means your quota table has inconsistent data (btrfs qgroup show /data). String together the mount command and then try btrfs quota disable /path/to/mount (mount /dev/md127 /data; btrfs quota disable /data;) and see if it still throws your ReadyNAS into read-only. Typically, an inconsistent qgroup mismatch will not be the root cause to your file system being marked read-only, it is what comes after btrfs tries to scan your system to recuperate what was inconsistent back to consistency that will cause it to be marked read-only (from experience).
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