yahoo-eng-team team mailing list archive

[Lucian Petrut <lpetrut@xxxxxxxxxxxxxxxxxxxxxx>]

Public bug reported:

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. 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/

** Affects: nova
     Importance: Undecided
         Status: New


** Tags: libvirt smbfs

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

Title:
  SMBFS volume attach race condition

Status in OpenStack Compute (Nova):
  New

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. 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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