[ovirt-users] Using ceph volumes with ovirt

[Alessandro De Salvo]

Hi,
just to answer myself, I found these instructions that solved my problem:

http://7xqb88.com1.z0.glb.clouddn.com/Features_Cinder%20Integration.pdf

Basically, I was missing the step to add the ceph key to the 
Authentication Keys tab of the cinder External Provider.
It's all working now.
Cheers,

     Alessandro

Il 30/05/16 10:55, Alessandro De Salvo ha scritto:
>
> Hi,
> I'm happily using our research cluster in Italy via gluster, and now 
> I'm trying to hotplug a ceph disk on a VM of my cluster, without success.
> The ceph cluster is managed via openstack cinder and I can create 
> correctly the disk via ovirt (3.6.6.2-1 on CentOS 7.2).
> The problem comes when trying to hotplug, or start a machine with the 
> given disk attached.
> In the vdsm log of the host where the VM is running or starting I see 
> the following error:
>
>
> jsonrpc.Executor/5::INFO::2016-05-30 
> 10:35:29,197::vm::2729::virt.vm::(hotplugDisk) 
> vmId=`c189472e-25d2-4df1-b089-590009856dd3`::Hotplug disk xml: <disk 
> address="" device="disk" snapshot="no" type="network">
>         <source 
> name="images/volume-9134b639-c23c-4ff1-91ca-0462c80026d2" protocol="rbd">
>                 <host name="141.108.X.Y1" port="6789" transport="tcp"/>
>                 <host name="141.108.X.Y2" port="6789" transport="tcp"/>
>         </source>
>         <auth username="cinder">
>                 <secret type="ceph" uuid="<base 64 ceph secret>"/>
>         </auth>
>         <target bus="virtio" dev="vdb"/>
>         <driver cache="none" error_policy="stop" io="threads" 
> name="qemu" type="raw"/>
> </disk>
>
> jsonrpc.Executor/5::ERROR::2016-05-30 
> 10:35:29,198::vm::2737::virt.vm::(hotplugDisk) 
> vmId=`c189472e-25d2-4df1-b089-590009856dd3`::Hotplug failed
> Traceback (most recent call last):
>   File "/usr/share/vdsm/virt/vm.py", line 2735, in hotplugDisk
>     self._dom.attachDevice(driveXml)
>   File "/usr/share/vdsm/virt/virdomain.py", line 68, in f
>     ret = attr(*args, **kwargs)
>   File "/usr/lib/python2.7/site-packages/vdsm/libvirtconnection.py", 
> line 124, in wrapper
>     ret = f(*args, **kwargs)
>   File "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 1313, in 
> wrapper
>     return func(inst, *args, **kwargs)
>   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 530, in 
> attachDevice
>     if ret == -1: raise libvirtError ('virDomainAttachDevice() 
> failed', dom=self)
> libvirtError: XML error: invalid auth secret uuid
>
>
>
> In fact the uuid of the secret used by ovirt to hotplug seems to be 
> the ceph secret (masked here as <base 64 ceph secret>), while libvirt 
> expects the uuid of the libvirt secret, by looking at the instructions 
> http://docs.ceph.com/docs/jewel/rbd/libvirt/.
> Anyone got it working?
> Thanks,
>
>     Alessandro
>
>
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