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Forum Discussion
ReadyNAS 2120 v2 Missing Volume after reboot
Recently upgraded to 6.9.3.
2120 with 4x4TB drives
Now after a reboot - NAS advises that no volume exists when I navigate to view the iscsi LUNS, which is all we really use.
we did have a \data volume with 2GB free!
all other configuration is present and correct - even the LUNS are listed
NAS is only used as vmware datastore location, backups were made to faclilitate file level recovery using veamm - to another iscsi lun on same NAS (which is also inaccessible)
any guidance would be appreciated
5 Replies
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Hi
"Were you running a balance on this when the problem happened? How did you run that balance?"
No - balance wasn't being run, wouldn't know how to do that.
issue was identified after users were not able to connect to shared files located via a windows server iscsi connection on the NAS.
The NAS was ultimately rebooted via the web gui, i did notice that the \data volume was present before the reboot but missing after
aldawson wrote:
NAS is only used as vmware datastore location, backups were made to faclilitate file level recovery using veamm - to another iscsi lun on same NAS (which is also inaccessible)
Some would say that backups stored on the same device are not much of a backup as there's a single point of failure.
The logs suggest that it failed to recover balance.
Apr 18 09:42:40 NAS kernel: BTRFS error (device md127): bad tree block start 13045144509306137155 19182968307712 Apr 18 09:42:40 NAS kernel: BTRFS error (device md127): bad tree block start 13045144509306137155 19182968307712 Apr 18 09:42:40 NAS kernel: BTRFS error (device md127): failed to recover balance: -5 Apr 18 09:42:40 NAS kernel: BTRFS error (device md127): open_ctree failed
Were you running a balance on this when the problem happened? How did you run that balance?
Hi JohnCM_S
logs have been emailed over to nsbu_logs
Regards
Al
Hi aldawson,
Thank you for providing the logs. The logs are actually flooded with messages about iSCSI. It could be that there is a file system issue but we are not yet sure what it is. Can you boot the NAS into Volume Read-only mode and then download the logs ASAP after it comes up?
Regards,
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