John Goerzen <jgoerzen <at> complete.org> writes: > > On 10/20/2013 09:51 AM, Tomasz Chmielewski wrote: > > I'll do some more tests with lots of extents to see if it's > > reproducible here as well. > > > > > Interestingly, I've generally had qgroups enabled here as well, possibly > on all of these systems. Could that be the culprit? Updating the subject here, because it seems increasingly likely that quotas are the problem causing OOM panics. I was able to reproduce the problem on a test filesystem with quotas enabled. After quotas were disabled and the system was rebooted, the problem no longer occurred. The dangerous combination seems to be many extents plus quotas. Sadly, quotas are the only way to have btrfs keep track of how much space subvols are using, so it's very useful to be able to use that feature. I also noted this at https://bugzilla.kernel.org/show_bug.cgi?id=63071 John -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
