[libvirt-users] ceph and libxl errors attaching device

[Iban Cabrillo]

Dear,
   I need to attach some ceph (0.94.6) block devices to our openstack
(kilo) running instances (xen 4.4) .
   Nova is able to create volumes, attach a detach (alt least there are no
errors)
   The hypervisor can see the blockdevice:

    # rbd -p volumes ls
       volume-xxxxxxxx-7342-434b-9xx1-d046bcxxxxfd

     And the instance xml seems to be ok:

     .................
    <disk type='network' device='disk'>
      <driver name='qemu' type='raw' cache='none'/>
      <auth username='cinder'>
        <secret type='ceph' uuid='xxxxxxxx-e53a-4xx7-9bc9-9bcc41xxxxe4'/>
      </auth>
      <source protocol='rbd'
name='volumes/volume-xxxxxxxx-7342-434b-9xx1-d046bcxxxxfd'>
        <host name='10.10.3.1' port='6789'/>
        <host name='10.10.3.2' port='6789'/>
        <host name='10.10.3.3' port='6789'/>
      </source>
      <target dev='xvdd' bus='xen'/>
      <serial>xxxxxxxx-7342-434b-9xx1-d046bcxxxxfd</serial>
    </disk>

     But there is no way to attach the device to running machine, I only
see this error on libxl :

   libxl: debug: libxl.c:3538:libxl_device_disk_add: ao 0x7fe248006080:
create: how=(nil) callback=(nil) poller=0x7fe24000ce20
libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk
vdev=xvdd spec.backend=qdisk
libxl: debug: libxl_event.c:618:libxl__ev_xswatch_deregister: watch
w=0x7fe248001780: deregister unregistered
libxl: debug: libxl_event.c:1591:libxl__ao_complete: ao 0x7fe248006080:
complete, rc=0
libxl: debug: libxl.c:3538:libxl_device_disk_add: ao 0x7fe248006080:
inprogress: poller=0x7fe24000ce20, flags=ic
libxl: debug: libxl_event.c:1563:libxl__ao__destroy: ao 0x7fe248006080:
destroy

   Seems like qdisk backend is not able to manage the volume

   Any idea?

-- 
############################################################################
Iban Cabrillo Bartolome
Instituto de Fisica de Cantabria (IFCA)
Santander, Spain
Tel: +34942200969
PGP PUBLIC KEY:
http://pgp.mit.edu/pks/lookup?op=get&search=0xD9DF0B3D6C8C08AC
############################################################################
Bertrand Russell:
*"El problema con el mundo es que los estúpidos están seguros de todo y los
inteligentes están llenos de dudas*"
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