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[Chuck Short <chuck.short@xxxxxxxxxxxxx>]

** Also affects: nova/kilo
   Importance: Undecided
       Status: New

** Changed in: nova/kilo
    Milestone: None => 2015.1.2

** Changed in: nova/kilo
       Status: New => Fix Committed

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https://bugs.launchpad.net/bugs/1461081

Title:
  SMBFS volume attach race condition

Status in OpenStack Compute (nova):
  Fix Released
Status in OpenStack Compute (nova) kilo series:
  Fix Committed

Bug description:
  When the SMBFS volume backend is used and a volume is detached, the
  according SMB share is detached if no longer used.

  This can cause issues if at the same time, a different volume stored
  on the same share is being attached as the according disk image will
  not be available.

  This affects the Libvirt driver as well as the Hyper-V one. In case of
  Hyper-V, the issue can easily be fixed by using the share path as a
  lock when performing attach/detach volume operations.

  Trace: http://paste.openstack.org/show/256096/

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