On 08/22/2013 11:12 PM, Tobias Brunner wrote:
Hi,
I'm trying to create a snapshot from a KVM VM:
# virsh snapshot-create one-5
error: unsupported configuration: internal checkpoints require at least
one disk to be selected for snapshot
RBD should support such snapshot, according to the wiki:
http://ceph.com/w/index.php?title=QEMU-RBD#Snapshotting
The wiki is old en outdated en not used anymore.
The problem is that libvirt now also wants to store the memory contents
of the Virtual Machine and RBD has no way to do that.
You will have to use the 'rbd' tool to snapshot the RBD image.
Wido
Some system information:
* Ubuntu 13.04 64Bit
* virsh --version: 1.0.2
* ceph version 0.67.1 (e23b817ad0cf1ea19c0a7b7c9999b30bed37d533)
* The XML of the VM is below
Thanks for all help...
Cheers,
Tobias
<domain type='kvm' id='4'>
<name>one-5</name>
<uuid>cff38c6a-2996-7709-c4f4-0ed826c2fb02</uuid>
<memory unit='KiB'>524288</memory>
<currentMemory unit='KiB'>524288</currentMemory>
<vcpu placement='static'>1</vcpu>
<cputune>
<shares>1024</shares>
</cputune>
<os>
<type arch='x86_64' machine='pc-i440fx-1.4'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/bin/kvm</emulator>
<disk type='network' device='disk'>
<driver name='qemu' type='raw' cache='none'/>
<source protocol='rbd' name='one/one-5-5-0'/>
<target dev='hda' bus='ide'/>
<alias name='ide0-0-0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='file' device='cdrom'>
<driver name='qemu' type='raw'/>
<source file='/var/lib/one//datastores/0/5/disk.1'/>
<target dev='hdb' bus='ide'/>
<readonly/>
<alias name='ide0-0-1'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
<controller type='ide' index='0'>
<alias name='ide0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01'
function='0x1'/>
</controller>
<controller type='usb' index='0'>
<alias name='usb0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01'
function='0x2'/>
</controller>
<interface type='bridge'>
<mac address='02:00:c0:a8:31:97'/>
<source bridge='vmbr0'/>
<virtualport type='openvswitch'>
<parameters interfaceid='6e492227-cd8b-f472-9f3d-1161ddf9ecfc'/>
</virtualport>
<target dev='vnet0'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03'
function='0x0'/>
</interface>
<input type='mouse' bus='ps2'/>
<graphics type='vnc' port='5905' autoport='no' listen='0.0.0.0'>
<listen type='address' address='0.0.0.0'/>
</graphics>
<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='0x04'
function='0x0'/>
</memballoon>
</devices>
<seclabel type='dynamic' model='apparmor' relabel='yes'>
<label>libvirt-cff38c6a-2996-7709-c4f4-0ed826c2fb02</label>
<imagelabel>libvirt-cff38c6a-2996-7709-c4f4-0ed826c2fb02</imagelabel>
</seclabel>
</domain>
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--
Wido den Hollander
42on B.V.
Phone: +31 (0)20 700 9902
Skype: contact42on
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