FibreChannel ppc discovery returns duplicate entries

[Chhavi Agarwal]

On ppc64 architecture some times the get_host_devices returns duplicate entries

2017-09-05 10:29:21.548 1190 DEBUG os_brick.initiator.connectors.fibre_channel [req-b00f8cb8-245b-4579-9785-4d2a07c05d08 0688b01e6439ca32d698d20789d52169126fb41fb1a4ddafcebb97d854e836c9 98db82365c2d4e42a73748908895f43b - default default] devices to remove = [{'device': '/dev/sdp', 'host': u'4', 'id': u'1', 'channel': u'0', 'lun': u'1'}, {'device': '/dev/sdo', 'host': u'4', 'id': u'0', 'channel': u'0', 'lun': u'1'}, {'device': '/dev/sdn', 'host': u'3', 'id': u'1', 'channel': u'0', 'lun': u'1'}, {'device': '/dev/sdm', 'host': u'3', 'id': u'0', 'channel': u'0', 'lun': u'1'}, {'device': '/dev/sdp', 'host': u'4', 'id': u'1', 'channel': u'0', 'lun': u'1'}, {'device': '/dev/sdo', 'host': u'4', 'id': u'0', 'channel': u'0', 'lun': u'1'}, {'device': '/dev/sdn', 'host': u'3', 'id': u'1', 'channel': u'0', 'lun': u'1'}, {'device': '/dev/sdm', 'host': u'3', 'id': u'0', 'channel': u'0', 'lun': u'1'}, {'device': '/dev/sdp', 'host': u'4', 'id': u'1', 'channel': u'0', 'lun': u'1'}, {'device': '/dev/sdo', 'host': u'4', 'id': u'0', 'channel': u'0', 'lun': u'1'}, {'device': '/dev/sdn', 'host': u'3', 'id': u'1', 'channel': u'0', 'lun': u'1'}, {'device': '/dev/sdm', 'host': u'3', 'id': u'0', 'channel': u'0', 'lun': u'1'}, {'device': '/dev/sdp', 'host': u'4', 'id': u'1', 'channel': u'0', 'lun': u'1'}, {'device': '/dev/sdo', 'host': u'4', 'id': u'0', 'channel': u'0', 'lun': u'1'}, {'device': '/dev/sdn', 'host': u'3', 'id': u'1', 'channel': u'0', 'lun': u'1'}, {'device': '/dev/sdm', 'host': u'3', 'id': u'0', 'channel': u'0', 'lun': u'1'}] disconnect_volume /usr/lib/python2.7/site-packages/os_brick/initiator/connectors/fibre_channel.py:275

Due to which the device removal is failing as the device is already removed

2017-09-05 10:29:21.618 7907 DEBUG oslo.privsep.daemon [-] privsep: Exception during request[1100080209104]: Unexpected error while running command.
Command: tee -a /sys/block/sdo/device/delete
Exit code: 1

Command: tee -a /sys/block/sdo/device/delete
Exit code: 1
Stdout: u'1'
Stderr: u'tee: /sys/block/sdo/device/delete: Resource temporarily unavailable\n'

[Chhavi Agarwal (chhagarw)]

Change set for this bug
https://review.openstack.org/#/c/501253/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/501253
Committed: https://git.openstack.org/cgit/openstack/os-brick/commit/?id=acfcca557a51317924f847f345439604dcdd1e54
Submitter: Jenkins
Branch: master

commit acfcca557a51317924f847f345439604dcdd1e54
Author: Chhavi Agarwal <email address hidden>
Date: Wed Sep 6 09:11:49 2017 -0400

    FC PPC64 device discovery issue

    Change ppc64 device discovery to remove duplicate devices
    in _get_host_devices().

    Change _get_hba_channel_scsi_target() to find devices
    regardless of the case of WWPNs.

    Change-Id: I18e74d13cd94aba625c51ee05fde75642fbfd2f6
    Closes-Bug: #1715647

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/pike
Review: https://review.openstack.org/504482

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/504482
Committed: https://git.openstack.org/cgit/openstack/os-brick/commit/?id=064e85f07c2a400d3707d68940bf00278ba410a2
Submitter: Jenkins
Branch: stable/pike

commit 064e85f07c2a400d3707d68940bf00278ba410a2
Author: Chhavi Agarwal <email address hidden>
Date: Wed Sep 6 09:11:49 2017 -0400

    FC PPC64 device discovery issue

    Change ppc64 device discovery to remove duplicate devices
    in _get_host_devices().

    Change _get_hba_channel_scsi_target() to find devices
    regardless of the case of WWPNs.

    Change-Id: I18e74d13cd94aba625c51ee05fde75642fbfd2f6
    Closes-Bug: #1715647
    (cherry picked from commit acfcca557a51317924f847f345439604dcdd1e54)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/os-brick 1.15.3 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/os-brick 2.0.0 release.