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[Sunitha K <sunitha.kannan@xxxxxx>]

Public bug reported:

While trying to attach HP 3PAR FC/iSCSI volumes to instance running on
KVM(RHEL 7.0), libvirt fails with the below message.

-----------------------------
if ret == -1: raise libvirtError ('virDomainAttachDeviceFlags() failed', dom=self)
libvirtError: Failed to open file '/dev/mapper/360002ac000000000000001280000943e': No such file or directory
-----------------------------

Find attached the compute log.

The below call from attach_volume(nova/virt/libvirt/driver.py) call fails.
            virt_dom.attachDeviceFlags(conf.to_xml(), flags)

Further debugging the problem, i observe that "attachDeviceFlags" to
libvirt is returns -1.

** Affects: nova
     Importance: Undecided
         Status: New

** Attachment added: "compute log"
   https://bugs.launchpad.net/bugs/1401799/+attachment/4279263/+files/nova-compute.log_bkp

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https://bugs.launchpad.net/bugs/1401799

Title:
  Attach Volume to instance running on KVM(RHEL7.0) fails for HP
  3PARFC/3PARISCSI  volumes

Status in OpenStack Compute (Nova):
  New

Bug description:
  While trying to attach HP 3PAR FC/iSCSI volumes to instance running on
  KVM(RHEL 7.0), libvirt fails with the below message.

  -----------------------------
  if ret == -1: raise libvirtError ('virDomainAttachDeviceFlags() failed', dom=self)
  libvirtError: Failed to open file '/dev/mapper/360002ac000000000000001280000943e': No such file or directory
  -----------------------------

  Find attached the compute log.

  The below call from attach_volume(nova/virt/libvirt/driver.py) call fails.
              virt_dom.attachDeviceFlags(conf.to_xml(), flags)

  Further debugging the problem, i observe that "attachDeviceFlags" to
  libvirt is returns -1.

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