[Bug 1611082] Re: Upgrading ceph-osd from Kilo to Mitaka "misses" /var/lib/ceph ownership change

[James Page]

Hmm I wonder whether this is due to the co-location of ceph-osd with
nova-compute; which order did you perform the upgrade in?  switching
openstack-origin on the nova-compute node will trigger a package upgrade
for all packages on the machine, including ceph.

ceph-osd can be more selective, so the upgrade process will only upgrade
ceph packages during the rolling upgrade process.

So normal order would have to be ceph-osd first, and then nova-compute.

Also, looking at the code, the ceph-mon and ceph-osd charms will not
support charm driven upgrades from proposed pockets - the map of
supported paths is as follows:

# A dict of valid ceph upgrade paths.  Mapping is old -> new
upgrade_paths = {
    'cloud:trusty-juno': 'cloud:trusty-kilo',
    'cloud:trusty-kilo': 'cloud:trusty-liberty',
    'cloud:trusty-liberty': 'cloud:trusty-mitaka',
}


So setting anything other than values in that map will not trigger any upgrade code in the charm.

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https://bugs.launchpad.net/bugs/1611082

Title:
  Upgrading ceph-osd from Kilo to Mitaka "misses" /var/lib/ceph
  ownership change

Status in ceph package in Ubuntu:
  Opinion
Status in ceph-osd package in Juju Charms Collection:
  New

Bug description:
  I just upgraded ceph-{osd,mon} from Kilo to Mitaka (when doing a full OpenStack upgrade) 
  and it looks like the charm missed the step described in:

  http://docs.ceph.com/docs/master/release-notes/#upgrading-from-hammer

  Fix the ownership:

  chown -R ceph:ceph /var/lib/ceph
  chown -R ceph:ceph /var/log/ceph

  As you can see in the log files:

  http://paste.ubuntu.com/22719924/
  http://paste.ubuntu.com/22719976/

  Fixing the ownership by hand makes the error:

   No block devices detected using current configuration

  To disappear from juju status.

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