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[Ben Nemec <openstack@xxxxxxxxxxxx>]

I did some more digging yesterday but concluded that this is beyond my
ability to debug in a reasonable timeframe.  I no longer think os-brick
is the problem though - it looks like the data passed in to os-brick is
already bad, so I think it's something in Cinder or Nova that is not
correctly handling the ipv6 iscsi address.  I'm going to add both
projects to this bug and let them determine who needs to fix what.

To recap, if we bracket iscsi_ip_address then oslo.config fails to
validate the value, if we remove the brackets then cinder-volume starts
correctly and is able to create the volume, but it can't be attached to
the Nova instance.  This appears to be because the iscsi port is being
appended to the ipv6 address without first bracketing the address to
separate the address and port portions (see the attached nova-compute
logs).

Here are the RDO package versions I was testing with:

$ rpm -qa | egrep "nova|cinder"
puppet-cinder-11.1.0-0.20170605202131.257519d.el7.centos.noarch
openstack-nova-conductor-16.0.0-0.20170521033533.99bd334.el7.centos.noarch
python2-cinderclient-2.0.1-0.20170320163530.d0790e3.el7.centos.noarch
puppet-nova-11.1.0-0.20170605232112.27baec7.el7.centos.noarch
python-cinder-11.0.0-0.20170521083557.cedf99f.el7.centos.noarch
openstack-nova-common-16.0.0-0.20170521033533.99bd334.el7.centos.noarch
openstack-nova-api-16.0.0-0.20170521033533.99bd334.el7.centos.noarch
openstack-nova-placement-api-16.0.0-0.20170521033533.99bd334.el7.centos.noarch
openstack-cinder-11.0.0-0.20170521083557.cedf99f.el7.centos.noarch
python-nova-16.0.0-0.20170521033533.99bd334.el7.centos.noarch
openstack-nova-migration-16.0.0-0.20170521033533.99bd334.el7.centos.noarch
openstack-nova-scheduler-16.0.0-0.20170521033533.99bd334.el7.centos.noarch
openstack-nova-console-16.0.0-0.20170521033533.99bd334.el7.centos.noarch
python2-novaclient-8.0.0-0.20170517113627.e1b9e76.el7.centos.noarch
openstack-nova-compute-16.0.0-0.20170521033533.99bd334.el7.centos.noarch
openstack-nova-novncproxy-16.0.0-0.20170521033533.99bd334.el7.centos.noarch

** No longer affects: os-brick

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

** Also affects: cinder
   Importance: Undecided
       Status: New

-- 
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https://bugs.launchpad.net/bugs/1696866

Title:
  Cinder LVM driver and ipv6 broken

Status in Cinder:
  New
Status in OpenStack Compute (nova):
  New
Status in tripleo:
  In Progress

Bug description:
  The following traceback is seen in the cinder volume logs if you
  deploy with the default LVM driver and ipv6:

  2017-06-08 21:50:40.665 38554 CRITICAL cinder [req-a7aff57e-2042-48f2-b1eb-962f79ccda01 - - - - -] ConfigFileValueError: Value for option iscsi_ip_address is not valid: [fd00:fd00:fd00:3000::12] is not a valid host address
  2017-06-08 21:50:40.665 38554 ERROR cinder Traceback (most recent call last):
  2017-06-08 21:50:40.665 38554 ERROR cinder   File "/usr/bin/cinder-volume", line 10, in <module>
  2017-06-08 21:50:40.665 38554 ERROR cinder     sys.exit(main())
  2017-06-08 21:50:40.665 38554 ERROR cinder   File "/usr/lib/python2.7/site-packages/cinder/cmd/volume.py", line 120, in main
  2017-06-08 21:50:40.665 38554 ERROR cinder     launcher.wait()
  2017-06-08 21:50:40.665 38554 ERROR cinder   File "/usr/lib/python2.7/site-packages/oslo_service/service.py", line 581, in wait
  2017-06-08 21:50:40.665 38554 ERROR cinder     self.conf.log_opt_values(LOG, logging.DEBUG)
  2017-06-08 21:50:40.665 38554 ERROR cinder   File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 2799, in log_opt_values
  2017-06-08 21:50:40.665 38554 ERROR cinder     _sanitize(opt, getattr(group_attr, opt_name)))
  2017-06-08 21:50:40.665 38554 ERROR cinder   File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 3277, in __getattr__
  2017-06-08 21:50:40.665 38554 ERROR cinder     return self._conf._get(name, self._group)
  2017-06-08 21:50:40.665 38554 ERROR cinder   File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 2841, in _get
  2017-06-08 21:50:40.665 38554 ERROR cinder     value = self._do_get(name, group, namespace)
  2017-06-08 21:50:40.665 38554 ERROR cinder   File "/usr/lib/python2.7/site-packages/oslo_config/cfg.py", line 2884, in _do_get
  2017-06-08 21:50:40.665 38554 ERROR cinder     % (opt.name, str(ve)))
  2017-06-08 21:50:40.665 38554 ERROR cinder ConfigFileValueError: Value for option iscsi_ip_address is not valid: [fd00:fd00:fd00:3000::12] is not a valid host address

  The problem appears to be that we bracket the value.  If I remove the
  brackets then cinder volume works correctly.

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