Storwize/SVC driver detach volume failed

[Li Min Liu]

The case on our system where create two hosts, one for fc and the other is iscsi

larry@larry-ubuntu:~$ ssh superuser@9.115.247.251 'lshost'
superuser@9.115.247.251's password:
id name port_count iogrp_count status
...
7 OpenstackUbun-28670410 1 4 offline
...
9 OpenstackUbun-20533817 2 4 degraded

larry@larry-ubuntu:~/Desktop$ less -R screen-c-vol.2014-04-16-162932.log
larry@larry-ubuntu:~/Desktop$ ssh superuser@9.115.247.251 'lsvdiskhostmap volume-d86758fb-190a-44b9-9442-845c8af93d16'
superuser@9.115.247.251's password:
id name SCSI_id host_id host_name vdisk_UID IO_group_id IO_group_name
162 volume-d86758fb-190a-44b9-9442-845c8af93d16 0 7 OpenstackUbun-28670410 60050760008F03000C00000000000104 0 io_grp0

2014-04-18 13:55:45.683 ERROR cinder.volume.drivers.ibm.storwize_svc.ssh [req-e31cb4b8-cd98-4415-a8cf-ca525e416524 cbf3ff0436ed4c13a9da2fb2eb4e9277 36e2e0918ba54edaa4ce561926870bca] CLI Exception output:
 command: ['svctask', 'rmvdiskhostmap', '-host', '"OpenstackUbun-20533817"', u'volume-d86758fb-190a-44b9-9442-845c8af93d16']
 stdout:
 stderr: CMMVC5842E The action failed because an object that was specified in the command does not exist.

when detach the volume, find the host logic error.

[Openstack Gerrit (openstack-gerrit)]

Fix proposed to branch: master
Review: https://review.openstack.org/89462

[Openstack Gerrit (openstack-gerrit)]

Reviewed: https://review.openstack.org/89462
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=a221a30b32aa94077f352719b2637b51c1809069
Submitter: Jenkins
Branch: master

commit a221a30b32aa94077f352719b2637b51c1809069
Author: Li Min Liu <email address hidden>
Date: Tue Apr 22 10:56:54 2014 +0800

    Storwize/SVC driver detach volume failed

    If config two backends on the same storage, but the protocol is
    different, one is FC and the other is iSCSI, that will create two
    hosts on the storage.

    When detaching the volume which is attached to the iSCSI host, the
    driver will get FC host by default, that causes volume status keeps
    'detaching'.

    Change-Id: Idbdb3861574197549625b4a6b6141197e42857ff
    Closes-Bug: #1310559

[Openstack Gerrit (openstack-gerrit)]

Fix proposed to branch: stable/icehouse
Review: https://review.openstack.org/91163

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/91163
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=f96e991895b1720bd2e47884cf5e9b92dc1e755f
Submitter: Jenkins
Branch: stable/icehouse

commit f96e991895b1720bd2e47884cf5e9b92dc1e755f
Author: Li Min Liu <email address hidden>
Date: Tue Apr 22 10:56:54 2014 +0800

    Storwize/SVC driver detach volume failed

    If config two backends on the same storage, but the protocol is
    different, one is FC and the other is iSCSI, that will create two
    hosts on the storage.

    When detaching the volume which is attached to the iSCSI host, the
    driver will get FC host by default, that causes volume status keeps
    'detaching'.

    Change-Id: Idbdb3861574197549625b4a6b6141197e42857ff
    (cherry picked from commit a221a30b32aa94077f352719b2637b51c1809069)
    Closes-Bug: #1310559