libvirt users - Aug 2011 - Snapshot error "command savevm not found"

Attempting to take snapshots of VM using virsh with the following command,

# virsh -c qemu:///system snapshot-create CentOS6-x86-001

Results in the following error,

error: internal error unable to execute QEMU command 'savevm': The
command
savevm has not been found

The VM's virtual disks are qcow2.  Below is the XML file for this vm

------------
<domain type='kvm' id='6'>
  <name>CentOS6-x86-001</name>
  <uuid>050fb9d8-0b9a-48b9-a432-16eec57a9e8f</uuid>
  <memory>1024000</memory>
  <currentMemory>1024000</currentMemory>
  <vcpu>1</vcpu>
  <os>
    <type arch='x86_64'
machine='rhel6.0.0'>hvm</type>
    <boot dev='hd'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2'
cache='none'/>
      <source
file='/vmstore/CentOS6-x86-001/CentOS6-x86-001_sys.qcow2'/>
      <target dev='vda' bus='virtio'/>
      <alias name='virtio-disk0'/>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x04'
function='0x0'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <target dev='hdc' bus='ide'/>
      <readonly/>
      <alias name='ide0-1-0'/>
      <address type='drive' controller='0' bus='1'
unit='0'/>
    </disk>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2'/>
      <source
file='/vmstore/CentOS6-x86-001/CentOS6-x86-001_var.img'/>
      <target dev='vdb' bus='virtio'/>
      <alias name='virtio-disk1'/>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x06'
function='0x0'/>
    </disk>
    <controller type='ide' index='0'>
      <alias name='ide0'/>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x01'
function='0x1'/>
    </controller>
    <interface type='bridge'>
      <mac address='52:54:00:4d:74:c7'/>
      <source bridge='br0'/>
      <target dev='vnet0'/>
      <model type='virtio'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x03'
function='0x0'/>
    </interface>
    <serial type='pty'>
      <source path='/dev/pts/1'/>
      <target port='0'/>
      <alias name='serial0'/>
    </serial>
    <console type='pty' tty='/dev/pts/1'>
      <source path='/dev/pts/1'/>
      <target port='0'/>
      <alias name='serial0'/>
    </console>
    <input type='tablet' bus='usb'>
      <alias name='input0'/>
    </input>
    <input type='mouse' bus='ps2'/>
    <graphics type='vnc' port='5900'
autoport='yes'/>
    <video>
      <model type='cirrus' vram='9216' heads='1'/>
      <alias name='video0'/>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x02'
function='0x0'/>
    </video>
    <memballoon model='virtio'>
      <alias name='balloon0'/>
      <address type='pci' domain='0x0000' bus='0x00'
slot='0x05'
function='0x0'/>
    </memballoon>
  </devices>
  <seclabel type='dynamic' model='selinux'>
    <label>system_u:system_r:svirt_t:s0:c292,c580</label>
   
<imagelabel>system_u:object_r:svirt_image_t:s0:c292,c580</imagelabel>
  </seclabel>
</domain>


------------

This is my first attempt at snapshots with KVM after migrating from ESXi, so
if there's a better method please let me know.

Thanks
- Trey
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? 2011?08?02? 08:15, Trey Dockendorf ??:
> Attempting to take snapshots of VM using virsh with the following 
> command,
>
> # virsh -c qemu:///system snapshot-create CentOS6-x86-001
>
> Results in the following error,
>
> error: internal error unable to execute QEMU command 'savevm': The 
> command savevm has not been found
>
> The VM's virtual disks are qcow2.  Below is the XML file for this vm
It means your qemu or qemu-kvm doesn't support savevm monitor command.
You can confirm it like below.

# service libvirtd stop
# nc -U /var/lib/libvirt/qemu/$domain.monitor
 > {"execute": "qmp_capabilities"}
 > {"execute": "query-commands"}

Osier
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