[Bug 1851290] Re: Add backport for (s390x) endian fixes to ceph nautilus

[Timo Aaltonen]

Hello Frank, or anyone else affected,

Accepted ceph into eoan-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/ceph/14.2.4-0ubuntu0.19.10.1 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 and change the tag from
verification-needed-eoan to verification-done-eoan. If it does not fix
the bug for you, please add a comment stating that, and change the tag
to verification-failed-eoan. 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 Eoan)
       Status: Triaged => Fix Committed

** Tags added: verification-needed verification-needed-eoan

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https://bugs.launchpad.net/bugs/1851290

Title:
  Add backport for (s390x) endian fixes to ceph nautilus

Status in Ubuntu Cloud Archive:
  Fix Released
Status in Ubuntu Cloud Archive train series:
  Triaged
Status in Ubuntu Cloud Archive ussuri series:
  Fix Released
Status in Ubuntu on IBM z Systems:
  Fix Released
Status in ceph package in Ubuntu:
  Fix Released
Status in ceph source package in Eoan:
  Fix Committed

Bug description:
  [Impact]
  Ceph is not functional on big-endian deployments (s390x)

  [Test Case]
  Deploy ceph on a s390x (using Juju charms).
  Monitors will fail to start, OSD's won't bootstrap.

  [Regression Potential]
  Low, patch has had lots of review upstream and has been accepted into the nautilus stable branch which is the release Ubuntu has in Focal and Eoan.

  [Original Bug Report]
  Since 'luminous' ceph (and in particular ceph-mon) fails on the s390x big endian platform.

  A bug for that was already raised in 2017 - LP 1713032:
  "[luminous] ceph-mon crashes when it is elected leader (s390x)"
  https://bugs.launchpad.net/cloud-archive/+bug/1713032

  It was a longer running task to get things fixed for s390x.
  And finally uweigand (many thx Uli) got everything accepted upstream:
  "Fix big-endian handling #30079" - https://github.com/ceph/ceph/pull/30079

  In parallel to that there is also a backport of these s390x endianess fixes for ceph 'nautilus':
  "nautilus: backport endian fixes #30697" - https://github.com/ceph/ceph/pull/30697

  This ticket is to get this upstream checked, tested and partly
  approved 'nautilus' backport integrated into the UCA ceph 'nautilus'.

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