[libvirt-users] how to make the volume's format to qcow2 when creating volume

[zhijun liu]

hi,all

the following are files of pool and volume.

storage pool is based on logical(LVM) and iscsi,now I create volume
specified the format to "qcow2"

*pool.xml*
<pool type='logical'>
  <name>pool_190</name>
  <source>
 <device
path='/dev/disk/by-path/ip-192.168.0.190:3260-iscsi-iqn.2012-11.com.cloudking:server.target1-lun-1'/>
  </source>
<target>
   <path>/dev/pool_190</path>
</target>
</pool>

*volume.xml*
<?xml version="1.0" encoding="UTF-8" ?>
<volume>
     <name>volume1</name>
     <capacity unit="GB">1</capacity>
     <target>
          <format type="qcow2" />
     </target>
</volume>

*the problmes is :when  the volume created successfully,However, the
volume's format is 'raw'*

like this

image: /dev/pool_190/volume1
*file format: raw*
virtual size: 1.0G (1073741824 bytes)
disk size: 0

how to resolve this troublesome.

libvirt :0.9.8
os:ubuntu12.04

many thanks for any reply....
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