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Forum Discussion
btrfs-cleaner always stuck at 100% CPU after 6.4.0 upgrade
Hello, After 6.4.0 upgrade btrfs-cleaner process always uses 100% cpu even after many uptime hours. SMB shares are ok (but slow) Frontview times out after authentication. Top command (ssh i...
My problems are 'solved', this is what I did may it will help:
Started with an OS reinstall, my Nas is a 312.
This will leave your data intact. Check if problems are solved.
In my case they were not.
When I was finally able to access the admin page the first thing I did was disable snapshots.
This stopped the creation of new shapshots but dit not stop the removal of snapshots once an hour.
This kept the NAS 100% occupied for aprox 10 minutes every hour, but it gave me time to create a backup of all the data.
Backup done (and checked!) I did a Factory reset, this WILL destroy all data on the disk.
After this I recreated the shares making sure to disable the snapshot-function.
Then I had to copy back all the data.
Overall this process took me 3 days!
But now I have a NAS that is once again up and running.
Ariane
ArianeS wrote:
My problems are 'solved', this is what I did may it will help:
Started with an OS reinstall, my Nas is a 312.
This will leave your data intact. Check if problems are solved.
In my case they were not.
When I was finally able to access the admin page the first thing I did was disable snapshots.
This stopped the creation of new shapshots but dit not stop the removal of snapshots once an hour.
This kept the NAS 100% occupied for aprox 10 minutes every hour, but it gave me time to create a backup of all the data.
"Backup done (and checked!) I did a Factory reset, this WILL destroy all data on the disk.
After this I recreated the shares making sure to disable the snapshot-function.
Then I had to copy back all the data.
Overall this process took me 3 days!
But now I have a NAS that is once again up and running.
Ariane"
While I would not wish this to be the solution, it would work to resolve. The cleaner service is likely stuck on a rather large file or large quantity of files. We've been really trying to connect to a system that is having this issue to diagnose the issue directly. The log files we have obtained, point to systems that have been unmaintained. Since you have started the system from factory defaults, I'd suggest running scheduled maintenance now so that the file system stays maintained for the future. Volume Maintenance Guidance
regards,
Alex
I am deleting all snapshots by hand, one by one, from the web interface. That is... in the rare time I get it to respond at all.
When that's done, I think I have a system that should work again, more or less. I expect btrfs-cleaner to be busy as hell for a day or 10 after I'm finished. I won't mention that it's stupid I'm not able to select multiple snapshots and delete them all.
All this misery caused by beta software, adding features I don't need and enabling it by default. I'm not a guinea pig for testing this software, I had a business depending on a rock solid NAS. Which my ReadyNAS 516 obviously is not (anymore).
I'll keep you posted. The solution Ariane is giving us won't work for me, because I can't backup all my data to another device. It's a terrible shame that the only option to get a somehow working NAS again is to disable the snapshot feature.
Too bad Netgear is giving up on this problem so easily. My problem exists for almost a month now with no real solution to look forward to. I owned three ReadNAS'ses, but the 516 is definately the last one I've bought.You can select multiple snapshots and delete them. This certainly works with Chrome (I just did it). Use ctrl-click, or shift-click on the first and shift-click again on the last.
Thank you! Will try that as soon as I get some time at the web interface. Which I tried to restart, but is not running at all since I tried. The restart spawns '/bin/systemd-tty-ask-password-agent --watch' which times out.
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