AFAIK quotas aren't a mount option, but if you never enabled them and created the qgroups by hand that's your answer and the issue must be something else.
On Mon, Oct 26, 2015 at 8:36 AM, cheater00 . <cheate...@gmail.com> wrote: > There are no quotas. I haven't enabled them. I believe the fstab says > that - could they be enabled in another way? How do I check for sure? > The man page doesn't say how to check the status: > https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs-quota > > On Mon, Oct 26, 2015 at 2:32 PM, Donald Pearson > <donaldwhpear...@gmail.com> wrote: >> Accidentally didn't reply to the list the 1st time. >> >> I see the same issue when I have quotas enabled. If you have quotas >> on, see if turning them off helps. >> >> On Mon, Oct 26, 2015 at 7:16 AM, cheater00 . <cheate...@gmail.com> wrote: >>> Hi guys, >>> I am running into really bad performance. Here's my setup: >>> >>> WD Red 6 TB connected over USB2 to my core i7 laptop, running Ubuntu >>> 32-bit with kernel 4.0.4-040004-generic #201505171336. >>> >>> Single btrfs partition covering whole disk. >>> >>> Autodefrag is on. >>> >>> fstab line: >>> UUID=... /media/X btrfs rw,nosuid,nodev,autodefrag 0 0 >>> >>> Sometimes when files are being modified or removed, I see >>> btrfs-transacti eat 100% cpu; during this time no io operations >>> succeed, that is, they're all stalled. You can't even ls on that fs. >>> This happens for several minutes then normal operation resumes. There >>> doesn't seem to be a rule to what will trigger this, other than >>> opening a single file and reading usually works quite well. (say, >>> watching a movie while all other programs are closed). But even moving >>> files off the disks triggers some sort of bug. Just now I am moving a >>> few files (just 30gb worth) onto another disk, and the bug triggers. >>> So btrfs-transacti was eating my cpu for over 5 minutes and according >>> to mv's output after this was done and cpu usage went back to normal >>> what I was waiting for was for a tiny png file to be removed. This is >>> pretty bad. >>> >>> I have tried defragmenting directories where files are being accessed >>> and moved. This hasn't helped. >>> >>> This happens whether the FS is near full or not. It currently is near >>> full but it wasn't before and it still did that. It still has about ~ >>> 100GB free space now. >>> >>> The more things are happening the more often this bug gets triggered. >>> So if I have utorrent running and its temporary downloads directory is >>> there, its download speed graph will be a few spikes of running at >>> several MB/sec separated by durations of 0 download speed. >>> >>> Nothing seems to show up in dmesg or syslog. >>> >>> I have asked in #btrfs but the suggestions ended up not fixing the >>> issue (autodefrag, defrag dirs). >>> >>> Please advise what I should do with this issue. >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in >>> the body of a message to majord...@vger.kernel.org >>> More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
