Hi,

We want to use Vmware and Xenserver storage as back-ends at the same time, and the related configuration as following in the /etc/cinder/cinder.conf:

#for vmware storage
volume_driver = cinder.volume.drivers.vmware.vmdk.VMwareVcVmdkDriver
vmware_host_password = xxxxxx
vmware_host_username = root
vmware_host_ip = 192.168.1.10
volume_name_template = volume-%s
volume_group = stack-volumes
#for xenserver storage
volume_driver = cinder.volume.drivers.xenapi.sm.XenAPINFSDriver
xenapi_connection_url = http://192.168.20.20
xenapi_connection_username = root
xenapi_connection_password = xxxxxx
xenapi_nfs_server = 172.16.20.20
xenapi_nfs_serverpath = /lthome

I have checked the http://docs.openstack.org/admin-guide... before submitting the question, and tried the following setting in the cinder.conf:

enabled_backends=vmware-volume,xen-volume
[lvmware-volume]
volume_group=vmware-volume-1
volume_driver = cinder.volume.drivers.vmware.vmdk.VMwareVcVmdkDriver
volume_backend_name=vmware-volume-ds
vmware_host_password = xxxxx
vmware_host_username = root
vmware_host_ip = 10.11.0.11
volume_name_template = volume-%s
volume_group = stack-volumes
[xen-volume]
volume_group=xen-volumes-1
volume_driver = cinder.volume.drivers.xenapi.sm.XenAPINFSDriver
volume_backend_name=xen-volume-nfs
xenapi_connection_url = http://10.11.2.22
xenapi_connection_username = root
xenapi_connection_password = sigma-rt
xenapi_nfs_server = 10.11.21.21
xenapi_nfs_serverpath = /lthome

Configured the Cinder as following:

root@controller:~# cinder --os-username admin --os-tenant-name admin extra-specs-list
+--------------------------------------+--------------------+----------------------------------------------------+
|                  ID                  |        Name        |                    extra_specs                     |
+--------------------------------------+--------------------+----------------------------------------------------+
| 409585c1-1bbd-40f1-a2ac-c0b1e6bdea59 |     xen-volume     |    {u'volume_backend_name': u'xen-volume-nfs'}     |
| cf8f3b61-bc37-4834-a1e6-e384db47f875 |   vmware-volume    |   {u'volume_backend_name': u'vmware-volume-ds'}    |

Unfortunately, I can't create any volume with following command:

cinder create --volume_type xen-volume --display_name xs-vol1 1
cinder create --volume_type vmware-volume --display_name vm-vol1 1

How to fix it ?

Update:

enabled_backends=vmware-volume,xen-volume
[vmware-volume]
volume_group=vmware-volume-1
volume_driver = cinder.volume.drivers.vmware.vmdk.VMwareVcVmdkDriver
volume_backend_name=vmware-volume-ds
[xen-volume]
volume_group=xen-volumes-1
volume_driver = cinder.volume.drivers.xenapi.sm.XenAPINFSDriver
volume_backend_name=xen-volume-nfs


cinder type-create vmware-volume
cinder type-key vmware-volume set volume_backend_name=vmware-volume-ds
cinder type-create xen-volume
cinder type-key xen-volume set volume_backend_name=xen-volume-nfs

root@controller:/var/log/cinder# cinder type-list
+--------------------------------------+--------------------+
|                  ID                  |        Name        |
+--------------------------------------+--------------------+
| 446d3874-7ab1-463b-9ba8-58f194f5056d |   vmware-volume    |
| da219f4b-2138-4bd1-a3a2-2c925307ba50 |     xen-volume     |
| dc360ffb-73a0-43a8-afb4-4435ac416330 |        lvm         |
| e2a40921-a699-4c4a-8005-4aa1d47b9044 | vmware-gold-volume |
+--------------------------------------+--------------------+
root@controller:~# cinder --os-username admin --os-tenant-name admin extra-specs-list
+--------------------------------------+--------------------+----------------------------------------------------+
|                  ID                  |        Name        |                    extra_specs                     |
+--------------------------------------+--------------------+----------------------------------------------------+
| 446d3874-7ab1-463b-9ba8-58f194f5056d |   vmware-volume    |   {u'volume_backend_name': u'vmware-volume-ds'}    |
| da219f4b-2138-4bd1-a3a2-2c925307ba50 |     xen-volume     |    {u'volume_backend_name': u'xen-volume-nfs'}     |
| dc360ffb-73a0-43a8-afb4-4435ac416330 |        lvm         |                         {}                         |
| e2a40921-a699-4c4a-8005-4aa1d47b9044 | vmware-gold-volume | {u'vmware:storage_profile': u'gold-policy-cinder'} |
+--------------------------------------+--------------------+---------------------
root@controller:~# cinder create --volume_type xen-volume --display_name xs-vol1 1
+---------------------+--------------------------------------+
|       Property      |                Value                 |
+---------------------+--------------------------------------+
|     attachments     |                  []                  |
|  availability_zone  |                 nova                 |
|       bootable      |                false                 |
|      created_at     |      2014-09-09T02:33:21.249569      |
| display_description |                 None                 |
|     display_name    |               xs-vol1                |
|      encrypted      |                False                 |
|          id         | 39157e04-d19f-4aa8-b7a2-0ce72dd89cb3 |
|       metadata      |                  {}                  |
|         size        |                  1                   |
|     snapshot_id     |                 None                 |
|     source_volid    |                 None                 |
|        status       |               creating               |
|     volume_type     |              xen-volume              |
+---------------------+--------------------------------------+
root@controller:~#

root@controller:~# cinder list
+--------------------------------------+--------+--------------+------+-------------+----------+-------------+
|                  ID                  | Status | Display Name | Size | Volume Type | Bootable | Attached to |
+--------------------------------------+--------+--------------+------+-------------+----------+-------------+
| 39157e04-d19f-4aa8-b7a2-0ce72dd89cb3 | error  |   xs-vol1    |  1   |  xen-volume |  false   |             |
+--------------------------------------+--------+--------------+------+-------------+----------+-------------+

in the log file inder-scheduler.log:

2014-09-09 10:33:21.315 6217 WARNING cinder.scheduler.host_manager [req-4a17bd92-94f3-470d-9e01-3d270f5c215a 0693571f2cc048749ad3c305979f1582 05490ba41f1542139ce916cd37fb081a - - -] volume service is down or disabled. (host: controller)
2014-09-09 10:33:21.319 6217 ERROR cinder.scheduler.flows.create_volume [req-4a17bd92-94f3-470d-9e01-3d270f5c215a 0693571f2cc048749ad3c305979f1582 05490ba41f1542139ce916cd37fb081a - - -] Failed to 
schedule_create_volume: No valid host was found.`enter code here`

root@controller:/var/log/cinder#  cinder-manage host list
host                        zone           
controller                  nova           
cinder                      nova           
controller@xen-volume       nova           
controller@vmware-volume    nova           
root@controller:/var/log/cinder#