[Bug 1524989] Update Released

[Brian Murray]

The verification of the Stable Release Update for python-os-brick has
completed successfully and the package has now been released to
-updates.  Subsequently, the Ubuntu Stable Release Updates Team is being
unsubscribed and will not receive messages about this bug report.  In
the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.

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https://bugs.launchpad.net/bugs/1524989

Title:
  [SRU] ScaleIO driver could attach wrong volume to the VM

Status in Ubuntu Cloud Archive:
  Fix Released
Status in Ubuntu Cloud Archive liberty series:
  Fix Committed
Status in os-brick:
  Fix Released
Status in python-os-brick package in Ubuntu:
  Fix Released
Status in python-os-brick source package in Wily:
  Fix Released

Bug description:
  When running multiple attach volume operations with multiple volumes
  and multiple VMs, a wrong volume could end up being attached to a VM.
  To fix this, connect_volume and disconnect_volume should be locked.

  [Impact]

   * Backport to Ubuntu Wily/Liberty to safeguard against race
  conditions when performing concurrent attach/detach requests.

  [Test Case]

   * Deploy Openstack Liberty
   * Boot > 1 instances and run https://gist.github.com/dosaboy/ea66eaeae945c6ed07e285b17602bb87

  [Regression Potential]

   * Nothing expected

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