[Bug 1833079] Re: backport librbd librados py3 string encoding fixes

[Edward Hope-Morley]

** Description changed:

+ [Impact]
+ Requesting back port of py3 encoding fixes to Mimic so that consumers of that code don't get strings returned with invalid encodings when run under py3.
+ 
+ [Test Case]
+ 
+ sudo apt install -y python3-rados
+ cat << EOF | python3
+ import rados
+ name = 'ceph'
+ conf = '/var/lib/charm/cinder-ceph/ceph.conf'
+ user = 'cinder-ceph'
+ client = rados.Rados(rados_id=user,
+                       clustername=name,
+                       conffile=conf)
+ client.connect()
+ fsid = client.get_fsid()
+ if type(fsid) == str:
+     print("value={} has correct type={}".format(fsid, type(fsid)))
+ else:
+     print("value={} has incorrect type={} (expect str)".format(fsid, type(fsid)))
+ EOF
+ 
+ [Regression Potential]
+ none expected
+ 
+ -----------------------------------------------------------------------------
+ 
  These fixes relate to issues we have found in Openstack [1][2] when
  running under Python 3. They are fixed upstream by commit [3] which is
  available in nautilus and beyond so we would like to backport to mimic
  and luminous.
  
  [1] https://bugs.launchpad.net/nova/+bug/1816468
  [2] https://bugs.launchpad.net/glance-store/+bug/1816721
  [3] https://github.com/ceph/ceph/commit/c36d0f1a7de4668eb81075e4a94846cf81fc30cd

** Description changed:

  [Impact]
  Requesting back port of py3 encoding fixes to Mimic so that consumers of that code don't get strings returned with invalid encodings when run under py3.
  
  [Test Case]
  
  sudo apt install -y python3-rados
  cat << EOF | python3
  import rados
  name = 'ceph'
- conf = '/var/lib/charm/cinder-ceph/ceph.conf'
- user = 'cinder-ceph'
+ conf = '/etc/ceph/ceph.conf'
+ user = 'a-user'
  client = rados.Rados(rados_id=user,
-                       clustername=name,
-                       conffile=conf)
+                      clustername=name,
+                      conffile=conf)
  client.connect()
  fsid = client.get_fsid()
  if type(fsid) == str:
-     print("value={} has correct type={}".format(fsid, type(fsid)))
+     print("value={} has correct type={}".format(fsid, type(fsid)))
  else:
-     print("value={} has incorrect type={} (expect str)".format(fsid, type(fsid)))
+     print("value={} has incorrect type={} (expect str)".format(fsid, type(fsid)))
  EOF
  
  [Regression Potential]
  none expected
  
  -----------------------------------------------------------------------------
  
  These fixes relate to issues we have found in Openstack [1][2] when
  running under Python 3. They are fixed upstream by commit [3] which is
  available in nautilus and beyond so we would like to backport to mimic
  and luminous.
  
  [1] https://bugs.launchpad.net/nova/+bug/1816468
  [2] https://bugs.launchpad.net/glance-store/+bug/1816721
  [3] https://github.com/ceph/ceph/commit/c36d0f1a7de4668eb81075e4a94846cf81fc30cd

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https://bugs.launchpad.net/bugs/1833079

Title:
  backport librbd librados py3 string encoding fixes

Status in Ubuntu Cloud Archive:
  In Progress
Status in Ubuntu Cloud Archive rocky series:
  In Progress
Status in Ubuntu Cloud Archive stein series:
  In Progress
Status in Ubuntu Cloud Archive train series:
  In Progress
Status in ceph package in Ubuntu:
  In Progress
Status in ceph source package in Cosmic:
  In Progress
Status in ceph source package in Disco:
  In Progress
Status in ceph source package in Eoan:
  In Progress

Bug description:
  [Impact]
  Requesting back port of py3 encoding fixes to Mimic so that consumers of that code don't get strings returned with invalid encodings when run under py3.

  [Test Case]

  sudo apt install -y python3-rados
  cat << EOF | python3
  import rados
  name = 'ceph'
  conf = '/etc/ceph/ceph.conf'
  user = 'a-user'
  client = rados.Rados(rados_id=user,
                       clustername=name,
                       conffile=conf)
  client.connect()
  fsid = client.get_fsid()
  if type(fsid) == str:
      print("value={} has correct type={}".format(fsid, type(fsid)))
  else:
      print("value={} has incorrect type={} (expect str)".format(fsid, type(fsid)))
  EOF

  [Regression Potential]
  none expected

  -----------------------------------------------------------------------------

  These fixes relate to issues we have found in Openstack [1][2] when
  running under Python 3. They are fixed upstream by commit [3] which is
  available in nautilus and beyond so we would like to backport to mimic
  and luminous.

  [1] https://bugs.launchpad.net/nova/+bug/1816468
  [2] https://bugs.launchpad.net/glance-store/+bug/1816721
  [3] https://github.com/ceph/ceph/commit/c36d0f1a7de4668eb81075e4a94846cf81fc30cd

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