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

[Frank Heimes]

The bugzilla-bridge again accidentally removed a verification tag - added it again.
(Problem is already reported.)

** Tags added: verification-train-needed

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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 Committed
Status in Ubuntu Cloud Archive train series:
  Fix Committed
Status in Ubuntu Cloud Archive ussuri series:
  Fix Committed
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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