[Bug 1838858] Update Released

James Page james.page at ubuntu.com
Wed Oct 30 11:57:03 UTC 2019


The verification of the Stable Release Update for ceph has completed
successfully and the package has now been released to -updates. In the
event that you encounter a regression using the package from -updates
please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.

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https://bugs.launchpad.net/bugs/1838858

Title:
  backport GC AIO to Luminous

Status in Ubuntu Cloud Archive:
  Invalid
Status in Ubuntu Cloud Archive pike series:
  Won't Fix
Status in Ubuntu Cloud Archive queens series:
  Fix Released
Status in ceph package in Ubuntu:
  Invalid
Status in ceph source package in Bionic:
  Fix Released

Bug description:
  [Impact]
  In RGW deployments with large deltas for deleted objects, the garbage collector will easily fall behind on cleanup of deleted objects eventually resulting in OSD devices hitting storage capacity.

  [Test Case]
  Deploy Ceph + RADOS Gateway
  Create millions of objects in an iterative loop
  Start deleting objects in parallel at a high rate
  Storage capacity will gradually reduce over time as RGW garbage collection falls behind.

  [Tricky to reproduce without significant scale of objects + deletion
  but proposed fix has been tested in the field.]

  [Regression Potential]
  Low - fix has been accepted into Ceph Luminous upstream and will form part of the next point release.  Change to use AIO for GC is also in later Ceph releases.

  [Original Bug Report]
  SRU for backport of the GC AIO feature to Ceph Luminous.

  https://github.com/ceph/ceph/pull/28784

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