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ReadyNas 214 - BTRFS error during scrub - Stuck in readonly
Hello everyone. I hope you can help me out... on Febraury 15 my ReadyNas 214 (4x8TB) started its scheduled scrub. After a couple of days I noticed I couldn't add new files in the NAS and realized th...
Artanis wrote:
Feb 15 08:16:44 ArtanisNAS kernel: BTRFS: error (device md126) in btrfs_commit_transaction:2233: errno=-5 IO failure (Error while writing out transaction) Feb 15 08:16:44 ArtanisNAS kernel: BTRFS info (device md126): forced readonly Feb 15 08:16:44 ArtanisNAS kernel: BTRFS warning (device md126): Skipping commit of aborted transaction. Feb 15 08:16:44 ArtanisNAS kernel: BTRFS: error (device md126) in cleanup_transaction:1856: errno=-5 IO failure Feb 15 08:16:44 ArtanisNAS kernel: BTRFS info (device md126): delayed_refs has NO entry Feb 15 08:16:45 ArtanisNAS kernel: BTRFS warning (device md126): failed setting block group ro, ret=-30 Feb 15 10:09:28 ArtanisNAS kernel: BTRFS error (device md126): bad tree block start 11025967846460254743 18195154993152
Feb 18 09:44:56 ArtanisNAS kernel: BTRFS error (device md126): bad tree block start 11025967846460254743 18195154993152 Feb 18 09:44:56 ArtanisNAS kernel: BTRFS error (device md126): bad tree block start 11025967846460254743 18195154993152
You ended up with a corrupt file system.
The best thing to do is back up all your files, then do a factory default from the system->settings page.
That will re-format everything, so you will need to reconfigure the NAS from scratch (and reinstall your apps). Then restore the files from the backup.
Artanis wrote:
Feb 15 08:16:44 ArtanisNAS kernel: BTRFS: error (device md126) in btrfs_commit_transaction:2233: errno=-5 IO failure (Error while writing out transaction) Feb 15 08:16:44 ArtanisNAS kernel: BTRFS info (device md126): forced readonly Feb 15 08:16:44 ArtanisNAS kernel: BTRFS warning (device md126): Skipping commit of aborted transaction. Feb 15 08:16:44 ArtanisNAS kernel: BTRFS: error (device md126) in cleanup_transaction:1856: errno=-5 IO failure Feb 15 08:16:44 ArtanisNAS kernel: BTRFS info (device md126): delayed_refs has NO entry Feb 15 08:16:45 ArtanisNAS kernel: BTRFS warning (device md126): failed setting block group ro, ret=-30 Feb 15 10:09:28 ArtanisNAS kernel: BTRFS error (device md126): bad tree block start 11025967846460254743 18195154993152
Feb 18 09:44:56 ArtanisNAS kernel: BTRFS error (device md126): bad tree block start 11025967846460254743 18195154993152 Feb 18 09:44:56 ArtanisNAS kernel: BTRFS error (device md126): bad tree block start 11025967846460254743 18195154993152
You ended up with a corrupt file system.
The best thing to do is back up all your files, then do a factory default from the system->settings page.
That will re-format everything, so you will need to reconfigure the NAS from scratch (and reinstall your apps). Then restore the files from the backup.
Thanks for the reply.
Is there no other way to fix this? If not, how much time do I have to do the backup? It's a lot of data...
Is there something I must NOT do (i.e. reboot, shut the unit off...) to avoid losing the data?
Thank you again.
Artanis wrote:
Is there no other way to fix this?
You could engage paid Netgear support (who can access the NAS remotely). If they decide data recovery is needed it would be expensive. https://kb.netgear.com/69/ReadyNAS-Data-Recovery-Diagnostics-Scope-of-Service
You could also attempt to repair the file system yourself using linux commands. This is risky, and if you don't already know linux I wouldn't attempt it.
Artanis wrote:
Is there something I must NOT do (i.e. reboot, shut the unit off...) to avoid losing the data?I wouldn't reboot it until I'd made a backup.
Artanis wrote:
If not, how much time do I have to do the backup? It's a lot of data...
Hard to say - it would depend on exactly what is going on. If you have failing disk(s), for example, the volume could completely fail at any time.
In general, any device can fail w/o warning, so in the future you should consider putting a backup plan in place for your data.
Thank you for your assistance, it's much appreciated.
As far as I know, all disks are fine (they are rather new, S.M.A.R.T. values check out fine).Regarding a backup it's really bad timing. I was about to prepare a backup solution with another PC using Unraid, but I was waiting some hardware to come so I don't have it in place yet.
The support is really expensive though, even just to diagnose it. :( I'll try to backup as fast as I can. Thank you again.
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