<div dir="ltr">Hello Folks,<div><br></div><div>I have cinder volume service, setup with both FC and ISCSI driver (multi-backend).</div><div><br></div><div>Here's cinder.conf</div><div><br></div><div>scheduler_host_manager=cinder.scheduler.host_manager.HostManager</div>
<div>scheduler_default_filters=AvailabilityZoneFilter,CapacityFilter</div><div>scheduler_default_weighers=CapacityWeigher</div><div>scheduler_driver=cinder.scheduler.filter_scheduler.FilterScheduler</div><div><br></div><div>
<b>enabled_backends=3PAR-ISCSI,3PAR-FC</b></div><div><br></div><div><b>[3PAR-ISCSI]</b></div><div><backend creds><br><p class=""></p>

<div><b>[3PAR-FC]</b></div><div><backend creds><br><p class=""></p></div><p class=""><b>$cinder-manage  host list</b><br></p><div>host                            zone</div><div>ask27                           nova</div>
<div>ask27@3PAR-FC                   nova</div><div>ask27@3PAR-ISCSI                nova</div></div><div><br></div><div><div>$cinder extra-specs-list</div><div>+--------------------------------------+-------+----------------------------------------------------------------------------+</div>
<div>|                  ID                  |  Name |                                extra_specs                                 |</div><div>+--------------------------------------+-------+----------------------------------------------------------------------------+</div>
<div>| 08109e24-79e0-4d24-bb8b-f26c39c6f0e2 |   FC  |  {u'persona': u'11 - VMware', u'volume_backend_name': u'HP3PARFCDriver'}   |</div><div>| b94d25b3-c022-4fb1-ba00-53ff9b6901e7 | ISCSI | {u'persona': u'11 - VMware', u'volume_backend_name': u'HP3PARISCSIDriver'} |</div>
<div>+--------------------------------------+-------+----------------------------------------------------------------------------+</div><div><br></div><div style>now when,I create volume</div><div><br></div><div><b>$cinder create --display-name vol99 --volume-type ISCSI 1</b><br>
</div><div><b><br></b></div><div><b><br></b></div><div><b>$cinder show 15820d30-44ff-47e3-9dec-63921800e1b9</b></div><div><div><div>+------------------------------+----------------------------------------------------------------------------------------------------------------------------------+</div>
<div>|           Property           |                                                              Value                                                               |</div><div>+------------------------------+----------------------------------------------------------------------------------------------------------------------------------+</div>
<div>|         attachments          |                                                                []                                                                |</div><div>|      availability_zone       |                                                               nova                                                               |</div>
<div>|           bootable           |                                                              false                                                               |</div><div>|          created_at          |                                                    2013-07-08T06:33:02.186351                                                    |</div>
<div>|     display_description      |                                                               None                                                               |</div><div>|         display_name         |                                                              vol99                                                               |</div>
<div>|              id              |                                               15820d30-44ff-47e3-9dec-63921800e1b9                                               |</div><div>|           metadata           | {u'CPG': u'ESX_CLUSTERS_RAID5_250GB_FC', u'3ParName': u'osv-FYINMET-R.Od7GOSGADhuQ', u'snapCPG': u'ESX_CLUSTERS_RAID5_250GB_FC'} |</div>
<div>|    <b>os-vol-host-attr:host     |                                                         ask27@3PAR-FC         </b>                                                |</div><div>| os-vol-tenant-attr:tenant_id |                                                 9e27e1aded67424d895bf83a4026484d                                                 |</div>
<div>|             size             |                                                                1                                                                 |</div><div>|         snapshot_id          |                                                               None                                                               |</div>
<div>|         source_volid         |                                                               None                                                               |</div><div>|            status            |                                                            available                                                             |</div>
<div>|         volume_type          |                                                                FC                                                                |</div><div>+------------------------------+----------------------------------------------------------------------------------------------------------------------------------+</div>
</div><div><br></div><div><br></div><div>Inside cinder scheduler.log<br></div></div><div><br></div><div><div>Filtered <b>[host 'ask27@3PAR-ISCSI': free_capacity_gb: 245, host 'ask27@3PAR-FC': free_capacity_gb: 246]</b> _schedule /usr/lib/python2.6/site-packages/cinder/scheduler/filter_scheduler.py:208</div>
<div><b>Choosing WeighedHost [host: ask27@3PAR-FC, weight: 246.0]</b> _schedule /usr/lib/python2.6/site-packages/cinder/scheduler/filter_scheduler.py:214</div><div><b>Making asynchronous cast on cinder-volume.ask27@3PAR-FC...</b></div>
</div><div><br></div><div style>For volume-type ISCSI, host: ask27@3PAR-FC gets selected wrongly.</div><div style><br></div><div style>Due to this nova volume-attach loads up wrong volume_driver to attach volume.</div><div style>
<br></div><div style>I had already looked at bug list, there's nothing i could relate this to.</div><div style><br></div><div style>Has anybody has seen this issue before?</div><div style><br></div><div><br></div><div style>
Thanks and Regards,</div><div style>Yatin Kumbhare</div></div></div>