Comment # 203 on bug 1063638 from Wenruo Qu

(In reply to Oliver Kurz from comment #202)
> (In reply to Wenruo Qu from comment #201)
> > [���]
> > I forgot to close this bug, sorry for that.
> 
> Hi Wenruo, thanks for your answer. Unfortunately it seems you overlooked
> what was described as problem in the initial description:
> 
> https://bugzilla.opensuse.org/show_bug.cgi?id=1063638#c0
> states that the priority as configured in /etc/sysconfig/btrfsmaintenance is
> not regarded in the triggered maintenance jobs. I could easily check this on
> my up-to-date openSUSE Leap 15.1 system by calling
> sudo sh -x /usr/share/btrfsmaintenance/btrfs-balance.sh
> and observing that the maintenance jobs are started without any nice level
> and the system responsiveness is impacted. Seeing that the bash script has
> not been changed to regard e.g. "idle" priority this is understandable. It
> feels that the changes you have applied actually help to prevent a critical
> performance degradation so an improvement *is* noticeable but the original
> problem is still present, at least partially hence reopening.

Thanks for the extra explain. It indeed looks like a problem, but I'm not yet
100% sure.

Would you please do me a favor by disabling quota and retest?

If the problem still exists, then it's 100% sure the problem is not quota
related.
If the problem is just gone, then it's the old quota problem and I must dig
further.

BTW, if it's pure balance/scrub/trim related, it would be must better to change
the title to remove the quota part.

Thanks,
Qu