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

[James Page]

This bug was fixed in the package ceph - 14.2.4-0ubuntu0.19.10.1~cloud0
---------------

 ceph (14.2.4-0ubuntu0.19.10.1~cloud0) bionic-train; urgency=medium
 .
   * New update for the Ubuntu Cloud Archive.
 .
 ceph (14.2.4-0ubuntu0.19.10.1) eoan; urgency=medium
 .
   [ Dariusz Gadomski ]
   * d/p/issue37490.patch: Cherry pick fix to optimize LVM queries in
     ceph-volume, resolving performance issues in systems under heavy load
     or with large numbers of disks (LP: #1850754).
 .
   [ James Page ]
   * New upstream release (LP: #1850901):
     - d/p/CVE-2019-10222.patch,ceph-volume-wait-for-lvs.patch,
       more-py3-compat.patch: Drop, included upstream.
     - d/p/bluefs-use-uint64_t-for-len.patch: Cherry pick fix to resolve
       FTBFS on 32 bit architectures.
   * d/p/issue40114.patch: Cherry pick endian fixes to resolve issues
     using Ceph on big-endian architectures such as s390x (LP: #1851290).

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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 Released
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 Released

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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