Public bug reported: There is a known issue where ceph commit latency can increase over time [0], and the "fix" is to move to the new Nautilus bitmap allocator back- ported in 12.2.12 [1].
It has been brought to my attention that one encountered a bug with the nautilus bitmap allocator [2] that brought down their cluster. This was due to a double-extent allocation which has been fixed and back-ported to Luminous, but is targeted for 12.2.13. Would be good to add it into our Ubuntu ceph package(s) where it applies to get ahead of the op commit latency problem. The bug is reported upstream and being discussed here [3] [4]. [0] http://tracker.ceph.com/issues/38738 [1] https://www.mail-archive.com/[email protected]/msg53793.html [2] http://lists.ceph.com/pipermail/ceph-users-ceph.com/2019-July/035799.html [3] https://tracker.ceph.com/issues/40080 [4] https://github.com/ceph/ceph/pull/28644 ** Affects: ceph (Ubuntu) Importance: Undecided Status: New ** Affects: ceph (Ubuntu Bionic) Importance: Undecided Status: New ** Tags: sts ** Tags added: sts ** Also affects: ceph (Ubuntu Bionic) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1842656 Title: Bitmap allocator returns duplicate entries To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ceph/+bug/1842656/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
