[libvirt-users] failure creating a snapshot volume within a lvm-based pool

[Edoardo Comar]

Hi
I have defined a logical pool and a volume within it

# virsh vol-create-as images_lvm myvol 2G
Vol myvol created

# virsh vol-list images_lvm
Name                 Path 
-----------------------------------------
myvol                /dev/libvirt_images_vg/myvol 


if I try to create another volume using the previous one as backing-vol, 
the creation fails with what looks like an incorrect commandline for 
lvcreate:

# virsh vol-create-as images_lvm myvol-instance 2G --backing-vol myvol
error: Failed to create vol myvol-instance
error: internal error Child process (/usr/sbin/lvcreate --name 
myvol-instance -L 2097152K -s=/dev/libvirt_images_vg/myvol) unexpected 
exit status 3: /usr/sbin/lvcreate: invalid option -- '='
  Error during parsing of command line.


Exactly the same happens if I specify a qcow2 format (the doc however says 
that The logical volume pool does not use the volume format type element). 


is this a known bug? I'm running Fedora 18
# virsh version
Compiled against library: libvirt 0.10.2
Using library: libvirt 0.10.2
Using API: QEMU 0.10.2
Running hypervisor: QEMU 1.2.2

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regards,
Edoardo Comar
WebSphere Application Service Platform for Networks (ASPN)
ecomar at uk.ibm.com

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