[Bug 1871820] Re: luminous: bluestore rocksdb max_background_compactions regression in 12.2.13

[Łukasz Zemczak]

Hello James, or anyone else affected,

Accepted ceph into bionic-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/ceph/12.2.13-0ubuntu0.18.04.2 in a
few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  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, what testing has been
performed on the package and change the tag from verification-needed-
bionic to verification-done-bionic. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-bionic. In either case, without details of your testing we will
not be able to proceed.

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

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: ceph (Ubuntu Bionic)
       Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-bionic

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https://bugs.launchpad.net/bugs/1871820

Title:
  luminous: bluestore rocksdb max_background_compactions regression in
  12.2.13

Status in Ceph:
  Unknown
Status in ceph package in Ubuntu:
  Invalid
Status in ceph source package in Bionic:
  Fix Committed

Bug description:
  There is a potential regression in the rocksdb
  max_background_compactions change in the 12.2.13 point release that is
  in bionic-proposed.

  https://tracker.ceph.com/issues/44937 was raised as the rocksdb
  version in the bionic ceph source does not contain:

    https://github.com/facebook/rocksdb/pull/3926

  which ensures that any overlap between background compactions is
  detected and handled.

  We either need to revert to a single background compaction as the
  default setting, or pick the fix into the rocksdb source in
  src:ceph/bionic

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