On Sun, Apr 3, 2016 at 5:09 PM, Philip Rhoades <p...@pricom.com.au> wrote: > Chris, > > > On 2016-04-04 03:25, Chris Murphy wrote: >> >> On Fri, Apr 1, 2016, 10:26 PM Philip Rhoades <p...@pricom.com.au> >> wrote: >> >>> I had another response on the Discourse forum: >>> >>> "It's probably this bug, devicemapper seems to be unable to free >>> deleted >>> files until you delete the container: >>> >>> https://github.com/docker/docker/issues/188672 >>> >>> Which is catastrophic for any long-lived server that uses temporary >>> files in any capacity at all." >>> >>> Does that also make sense to more clued-up tech people than me? >> >> >>> >> >> That link doesn't work. > > > > Sorry, it looks like copying and pasting added a "2" to the link (the number > of clicks on the link on the forum) - it should be: > > https://github.com/docker/docker/issues/18867 > > >> There was a thinp trim bug, but is been squashed on Fedora for over a >> year. > > > > No mention of "thinp" on the page . .
It's using loop devices which is only the default in Docker because it's easy for them to setup out of the box, where the recommended (at least on RHEL, CentOS, Fedora) XFS on dmthin requires a.) an LVM VG with free extents available, and b.) systemctl enable/start docker-storage-setup to allocate bit more or less than half of those free extents to the creation of a dmthin pool in which the containers exist. What I can't tell you off hand is whether there's something in Docker land that automatically does discard or fstrim periodically (like on container deletion) to actually revert the logical extents that are freed up, back into the dmthin pool. https://github.com/docker/docker/issues/12902 Looks like something is happening, I'm just not sure what. -- Chris Murphy -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: http://lists.fedoraproject.org/admin/lists/users@lists.fedoraproject.org Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
