[vdsm] how vdsm implement qcow2 on lvm

2013-08-20 Thread bigclouds 
hi,all
could you tell me how vdsm implement qcow2 on lvm? and how  lv of qcow2 fromat 
support backing file?
if the implememt is a normal way, now i find libguestfs does not recognize  
lvs(qcow2 format)  with backing file
 
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Re: [vdsm] how vdsm implement qcow2 on lvm

2013-08-20 Thread Itamar Heim 

On 08/20/2013 06:11 AM, bigclouds wrote:

hi,all
could you tell me how vdsm implement qcow2 on lvm? and how  lv of qcow2
fromat support backing file?


qcow2 is the format, stored in an LV.
see http://www.ovirt.org/images/3/3d/OVirt_VDSM_Storage_2002.pdf


if the implememt is a normal way, now i find libguestfs does not
recognize  lvs(qcow2 format)  with backing file


how are you trying to use it via libguestfs? you need vdsm to monitor 
qemu/qcow for lv extend requests to the SPM (or another similar solution)?



thanks




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