[Bug 1655047] Re: 2390 FC connector lacks ubuntu support

[OpenStack Infra]

Reviewed:  https://review.openstack.org/422279
Committed: https://git.openstack.org/cgit/openstack/os-brick/commit/?id=63f1b43b0ac00c3fc558b9335d35f5cba48d2ecf
Submitter: Jenkins
Branch:    stable/newton

commit 63f1b43b0ac00c3fc558b9335d35f5cba48d2ecf
Author: Andreas Scheuring <andreas.scheuring at de.ibm.com>
Date:   Wed Dec 21 16:21:52 2016 +0100

    s390 FC device path fix for Ubuntu
    
    This fix solves a LUN attachment error for Ubuntu on s390 host setups. Fiber
    Channel requires a path for discovery of new devices, and Ubuntu uses a
    different format than previously assumed. This can be solved by simply adding
    the Ubuntu-style path to the list of possible paths, since they get quietly
    dropped if they lead nowhere in FibreChannelConnector._get_possible_volume_paths
    anyways.
    
    Change-Id: I0b07572903263122213f2ea5dc42151a7b69d99f
    Closes-Bug: #1655047
    (cherry picked from commit df634a5fdea23038f140fabf00bc2dfb1fd13395)


** Changed in: cloud-archive/newton
       Status: Triaged => Fix Committed

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https://bugs.launchpad.net/bugs/1655047

Title:
  2390 FC connector lacks ubuntu support

Status in Ubuntu Cloud Archive:
  Fix Released
Status in Ubuntu Cloud Archive mitaka series:
  Triaged
Status in Ubuntu Cloud Archive newton series:
  Fix Committed
Status in Ubuntu Cloud Archive ocata series:
  Fix Released
Status in os-brick:
  Fix Released
Status in python-os-brick package in Ubuntu:
  Fix Released
Status in python-os-brick source package in Xenial:
  Triaged
Status in python-os-brick source package in Yakkety:
  Triaged
Status in python-os-brick source package in Zesty:
  Fix Released

Bug description:
  Description
  ===========
  The connector at os_brick/initiator/connectors/fibre_channel_s390x.py is supposed to also attach LUNs created with ubuntu running as OS on s390. The support for this functionality is as of yet not complete. 

  Steps to reproduce
  ==================
  Run devstack on a ubunto on s390 host, and create a volume with the 'openstack volume create'.

  Expected result
  ===============
  A LUN should be made available.

  Actual result
  =============
  2016-12-21 10:18:13.892 WARNING cinder.volume.manager [req-8ac5ffe6-5b9f-435b-8c2f-195580f1dcda None] Flow 'volume_create_manager' (1e499e82-747b-432f-8fc6-01e2e958062b) transitioned into state 'REVERTED' from state 'RUNNING'
  [...]
  2016-12-21 10:18:13.897 82955 ERROR oslo_messaging.rpc.server ImageCopyFailure: Failed to copy image to volume: Unable to find a Fibre Channel volume device.

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