[Bug 1838858] Please test proposed package

[James Page]

Hello Jesse, or anyone else affected,

Accepted ceph into queens-proposed. The package will build now and be
available in the Ubuntu Cloud Archive in a few hours, and then in the
-proposed repository.

Please help us by testing this new package. To enable the -proposed
repository:

  sudo add-apt-repository cloud-archive:queens-proposed
  sudo apt-get update

Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-queens-needed to verification-queens-done. If it does
not fix the bug for you, please add a comment stating that, and change
the tag to verification-queens-failed. In either case, details of your
testing will help us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in
advance!

** Changed in: cloud-archive/queens
       Status: In Progress => Fix Committed

** Tags added: verification-queens-needed

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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 Committed
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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