[Bug 1940697] Re: missing erasure code plugin library libec_isa.so

[Launchpad Bug Tracker]

This bug was fixed in the package ceph - 16.2.6-0ubuntu0.21.04.1

---------------
ceph (16.2.6-0ubuntu0.21.04.1) hirsute; urgency=medium

  [ Frode Nordahl ]
  * d/control: The ISA-L EC plugin changed its build dependency from yasm to
    nasm 2.13.03 or newer (LP: #1940697)

  [ James Page ]
  * New upstream point release (LP: #1943932).

 -- James Page <james.page at ubuntu.com>  Sun, 19 Sep 2021 09:29:10 +0100

** Changed in: ceph (Ubuntu Hirsute)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1940697

Title:
  missing erasure code plugin library libec_isa.so

Status in OpenStack ceph-mon charm:
  Invalid
Status in ceph package in Ubuntu:
  Fix Released
Status in ceph source package in Hirsute:
  Fix Released
Status in ceph source package in Impish:
  Fix Released

Bug description:
  [Impact]
  An upstream change to build requirements for the ISA-L EC plugin caused it not to be included in the Ceph package for Hirsute and Impish.

  Users upgrading from previous versions of Ubuntu making use of this
  feature would as such face a regression in Ubuntu.

  [Test Plan]
  The original bug description section below contains a clear reproducible way to test if the issue has been fixed.

  [Regression Potential]
  We are adding a build dependency which adds back a shared library that was previously included in the package, so I would consider the regression potential to be minimal.

  [Original Bug Description]
  After a fresh deployment of ceph-mon on maas/ubuntu-focal (source: cloud:focal-wallaby) the required library libec_isa.so for the isa erasure code plugin is missing.

  The command

  juju run-action ceph-mon/leader create-erasure-profile --params
  ./create_erasure_profile.yml --verbose --wait

  with this parameters in create_erasure_profile.yml

  name: ectest
  #m
  coding-chunks: 2
  #k
  data-chunks: 4
  device-class: hdd
  failure-domain: host
  plugin: isa

  fails with the error message

  unit-ceph-mon-0:
    UnitId: ceph-mon/0
    id: "14"
    message: 'Create erasure profile failed with message: Command ''[''ceph'', ''--id'',
      ''admin'', ''osd'', ''erasure-code-profile'', ''set'', ''ectest'', ''plugin=isa'',
      ''k=4'', ''m=2'', ''crush-failure-domain=host'', ''crush-device-class=hdd'']''
      returned non-zero exit status 5.'
    results:
      Stderr: |
        Error ENOENT: unknown erasure code profile 'ectest'
        Error EIO: load dlopen(/usr/lib/x86_64-linux-gnu/ceph/erasure-code/libec_isa.so): /usr/lib/x86_64-linux-gnu/ceph/erasure-code/libec_isa.so: cannot open shared object file: No such file or directory
    status: failed
    timing:
      completed: 2021-08-20 16:39:02 +0000 UTC
      enqueued: 2021-08-20 16:38:58 +0000 UTC
      started: 2021-08-20 16:39:00 +0000 UTC

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