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Forum Discussion
Can I backup nas config, take out disks, reset, restore backup and insert disk back to avoid data lo
My NAS keeps hanging after running for a while, day or days. I can't find any clue so plan to reset it, but I like to keep the data on the disks (raid5) If I take them out, backup config, res...
itwinston wrote:
If I take them out, backup config, reset, restore config and insert them in, will I loss the data, or it should be there as it was?
The OS and the configuration is on the disks, and the system boots from the disks. A reset formats the disks and does a fresh factory install of the OS onto the disks. It does nothing to the rest of the chassis.
Therefore it is impossible to reset the NAS with no disks installed.
itwinston wrote:
My NAS keeps hanging after running for a while, day or days.
I can't find any clue
What NAS model do you have?
Have you downloaded the full log zip file (shortly after a hang)?
Thanks. That really helps.
The NAS is used for backup so it is easy to reset after copy data out. I put a new disk in for a week now and it runs well, so I guess it is a software issue. I will try to copy and reset today to save troubleshooting time.
May I know where to find full log? From the admin web portal I found logs of not much helpful details.
itwinston wrote:May I know where to find full log? From the admin web portal I found logs of not much helpful details.
If you look at that log screen, you'll see a download control that will download the full zip file - which has a lot more info than you'll see on the screen.
I found that btrfs-transaction consumes almost 100% cpu time when I am rm some large files. Wil this be the reason that the system hangs?
Now the file deletion is completed, the process still consumes over 90% cpu. Btrfs quota is disabled.
Firmware: 6.10.7
Model READYNAS 314
itwinston wrote:
I found that btrfs-transaction consumes almost 100% cpu time when I am rm some large files. Wil this be the reason that the system hangs?
Now the file deletion is completed, the process still consumes over 90% cpu. Btrfs quota is disabled.
Firmware: 6.10.7
Model READYNAS 314
How full is the data volume?
Do you have snapshots enabled? If so, are you using smart snapshots?
Have you looked at the log zip? Disk_info.log will give you some of the SMART stats. You can also look in system.log, kernel.log, and systemd-journal.log for btrfs and disk errors. Though you can also search the log directly from ssh with journalctl, and check the smart stats with smartctl -x
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