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[libvirt-users] error: argument unsupported: unable to handle disk requests in snapshot



Hello, a problem occurred during making a snapshot for a guest, ask for help...
 
1. the xml for snapshotdomain like this:
# cat deployment.1
<domainsnapshot>
   <name>a</name>
   <disks>
    <disk name='/home/qcow2/disk.0'>
      <driver type='qcow2'/>
      <source file='/home/qcow2/disk.3'/>
    </disk>
  </disks>
</domainsnapshot>
 
2. when i execute the command , a mistake occurred:
# virsh snapshot-create qcow2 deployment.1
error: argument unsupported: unable to handle disk requests in snapshot
 
3. i add the parameter '--disk-only', another mistake occurred:
# virsh snapshot-create qcow2 deployment.1 --disk-only
error: Failed to take snapshot: unknown command: 'snapshot_blkdev'
 
4. my libvirtd version is 0.9.4 , i update to 1.0.0 , also had this problem
# libvirtd --version
libvirtd (libvirt) 1.0.0
 
5. this is my guest below:
# ls -l
-rw-r--r--  1 oneadmin oneadmin       1540 2012-11-27 15:27 deployment.0
-rw-r--r--  1 root     root            204 2012-11-27 21:28 deployment.1
-rw-r--r--  1 root     root     5772345344 2012-11-28 17:42 disk.0
-rw-r--r--  1 root     root         459264 2012-11-27 21:02 disk.1
-rw-r--r--  1 root     root         372736 2012-11-27 15:25 disk.2
 
# virsh list
 Id    名�Q                         ���B
----------------------------------------------------
 1     qcow2                          running
 
# qemu-img info disk.0
image: disk.0
file format: qcow2
virtual size: 20G (21474836480 bytes)
disk size: 5.4G
cluster_size: 65536
Snapshot list:
ID        TAG                 VM SIZE                DATE       VM CLOCK
1         1354019482             142M 2012-11-27 20:31:22   00:00:08.971
 
is there anyone has the same problem with me ?
 

于长江 |  东软

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