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[Rafael David Tinoco <rafael.tinoco@xxxxxxxxxxxxx>]

** Project changed: nova => nova (Ubuntu)

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https://bugs.launchpad.net/bugs/1219658

Title:
  Wrong image size using rbd backend for libvirt

Status in OpenStack Compute (nova) havana series:
  In Progress
Status in “nova” package in Ubuntu:
  In Progress

Bug description:
  [Impact]

    * [2cebfd2] libvirt: convert cpu features attribute from list to
                         a set (LP: #1267191)

   cpu features list which is being sent to libvirt,
   when creating a domain or calling compareCPU, must contain only
   unique entries. Multiple issues arise when we are updating the
   features attribute in LibvirtConfigCPU class (for example during
   migration).

    * [b86a0e5] Fixes rdb backend image size (LP: #1219658) -> THIS!

   The original fix for bug 1219658 introduced a factor of 1024 error
   in the resulting rbd image size -> real urgent to be fixed.

  [Test Case]
   
   LP: #1267191
   * systemctl restart openstack-nova-compute
     Observe /var/log/nova/compute.log

   LP: #1219658
   * Testing this fix implies only in having rdb backend.

  [Regression Potential]

   * Tests indicate fix is running in a big production without any
  problem.

   LP: #1267191
   * A regression would continue to cause nova not to start (as is happening
     today with this bug under described conditions).

   LP: #1219658
   * RDB backend could stop working (keeping the bug will eventualy cause 
     an outage for those who use rdb backend)

  [Other Info]

  For rbd image backend for libvirt, the root partition will use the
  image size not 'disk' size. It lack of resize root volume in the
  codes.

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