On Fri, 8 Apr 2016 16:53:32 +0500 Roman Mamedov <r...@romanrm.net> wrote:
> On Fri, 08 Apr 2016 20:36:26 +0900 > Tomasz Chmielewski <t...@virtall.com> wrote: > > > On 2016-02-08 20:24, Roman Mamedov wrote: > > > > >> Linux 4.4.0 - btrfs is mainly used to host lots of test containers, > > >> often snapshots, and at times, there is heavy IO in many of them for > > >> extended periods of time. btrfs is on HDDs. > > >> > > >> > > >> Every few days I'm getting "no space left" in a container running > > >> mongo > > >> 3.2.1 database. Interestingly, haven't seen this issue in containers > > >> with MySQL. All databases have chattr +C set on their directories. > > > > > > Hello, > > > > > > Do you snapshot the parent subvolume which holds the databases? Can you > > > correlate that perhaps ENOSPC occurs at the time of snapshotting? If > > > yes, then > > > you should try the patch https://patchwork.kernel.org/patch/7967161/ > > > > > > (Too bad this was not included into 4.4.1.) > > > > By the way - was it included in any later kernel? I'm running 4.4.5 on > > that server, but still hitting the same issue. > > It's not in 4.4.6 either. I don't know why it doesn't get included, or what > we need to do. Last time I asked, it was queued: > http://www.spinics.net/lists/linux-btrfs/msg52478.html > But maybe that meant 4.5 or 4.6 only? While the bug is affecting people on > 4.4.x today. This got applied now in 4.4.21, thanks. -- With respect, Roman
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