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[Jianghua Wang <wjh_fresh@xxxxxxx>]

Public bug reported:

https://github.com/openstack/nova/blob/bc5035343d366a18cae587f92ecb4e871aba974a/plugins/xenserver/xenapi/etc/xapi.d/plugins/pluginlib_nova.py#L139

If the vbd unplug always return DEVICE_DETACH_REJECTED, it will be in
loop for ever. So need add a maximum retry count in
_vbd_unplug_with_retry.

** Affects: nova
     Importance: Undecided
     Assignee: Jianghua Wang (wjh-fresh)
         Status: New

** Changed in: nova
     Assignee: (unassigned) => Jianghua Wang (wjh-fresh)

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https://bugs.launchpad.net/bugs/1592362

Title:
  [XenAPI] add a maximum retry count for vbd unplug

Status in OpenStack Compute (nova):
  New

Bug description:
  https://github.com/openstack/nova/blob/bc5035343d366a18cae587f92ecb4e871aba974a/plugins/xenserver/xenapi/etc/xapi.d/plugins/pluginlib_nova.py#L139

  If the vbd unplug always return DEVICE_DETACH_REJECTED, it will be in
  loop for ever. So need add a maximum retry count in
  _vbd_unplug_with_retry.

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