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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

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

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

** Changed in: nova/ocata
       Status: New => In Progress

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https://bugs.launchpad.net/bugs/1677621

Title:
  Port update exception on nova unshelve for instance with PCI devices

Status in OpenStack Compute (nova):
  Fix Released
Status in OpenStack Compute (nova) newton series:
  New
Status in OpenStack Compute (nova) ocata series:
  In Progress

Bug description:
  Description
  ===========
  If an instance with PCI devices (SRIOV, or passthrough) is shelved, a port update exception will be seen and the instance will go into Error state when it is unshelved.

  The nova API exception message is similar to:

  "Unable to correlate PCI slot 0000:0d:00.1"

  Steps to reproduce
  ==================
  1. Launch an instance with SRIOV or PCI passthrough port bindings.

  2. nova shelve <instance_uuid>

  -- wait for nova instance status SHELVED_OFFLOADED --

  3. nova unshelve <instance_uuid>

  Expected result
  ===============
  If there are resources available, the instance should be able to claim PCI devices and successfully (re)launch.

  Actual result
  =============
  - Instance in error state
  - Exception in nova api logs.

  Environment
  ===========
  1. Exact version of OpenStack you are running: Ocata, devstack

  2. Which hypervisor did you use? Libvirt + KVM

  2. Which storage type did you use? LVM

  3. Which networking type did you use? Neutron, OVS

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