[libvirt] [Openstack] Libvirt block live migration with OpenStack Diablo

Kei.masumoto kei.masumoto at gmail.com
Thu Nov 17 13:23:57 UTC 2011


I think you should use exactly same template as below.
https://github.com/openstack/nova/blob/master/nova/virt/libvirt.xml.template

Kei

(2011/11/17 2:41), Doude wrote:
> Hi all,
>
> I use OpenStack Diablo release 2011.3-0ubuntu6.2 on ubuntu 11.10 with
> libvirt 0.9.2-4ubuntu15.1
>
> I try to block migrate a VM from one host to another one.
> OpenStack uses the 'migrateToURI' method from libvirt python library.
> But this call fails.
>
> Libvirt log :
> - Source host:
> 18:27:30.475: 24622: error : remoteIO:5985 : unable to set user and
> group to '107:118' on
> '/var/lib/nova/instances/instance-000000b7/console.fifo.in': No such
> file or directory
> - Target host:
> 27:29.737: 27244: error : virSecurityDACSetOwnership:125 : unable to
> set user and group to '107:118' on
> '/var/lib/nova/instances/instance-000000b7/console.fifo.in': No such
> file or directory
> 18:27:29.917: 27244: error :
> virSecurityDACRestoreSecurityFileLabel:143 : cannot resolve symlink
> /var/lib/nova/instances/instance-000000b7/console.fifo.out: No such
> file or directory
>
> So the migration fails. VM disks are transfered to the target host but
> console files aren't.
>
> XML file of domain:
>
> <domain type='kvm'>
>      <name>instance-000000b7</name>
>      <memory>2097152</memory>
>      <os>
>              <type>hvm</type>
>              <boot dev="hd" />
>      </os>
>      <features>
>          <acpi/>
>      </features>
>      <vcpu>2</vcpu>
>      <devices>
>          <disk type='file'>
>              <driver type='qcow2'/>
>              <source file='/var/lib/nova/instances/instance-000000b7/disk'/>
>              <target dev='vda' bus='virtio'/>
>          </disk>
>              <disk type='file'>
>                  <driver type='qcow2'/>
>                  <source
> file='/var/lib/nova/instances/instance-000000b7/disk.local'/>
>                  <target dev='vdb' bus='virtio'/>
>              </disk>
>
>          <interface type='bridge'>
>              <source bridge='br102'/>
>              <mac address='02:16:3e:36:c4:70'/>
>              <model type='virtio'/>
>              <filterref filter="nova-instance-instance-000000b7-02163e36c470">
>                  <parameter name="IP" value="172.16.2.3" />
>                  <parameter name="DHCPSERVER" value="172.16.2.1" />
>              </filterref>
>          </interface>
>
>          <!-- The order is significant here.  File must be defined first -->
>          <serial type="pipe">
>              <source
> path='/var/lib/nova/instances/instance-000000b7/console.fifo'/>
>              <target port='1'/>
>          </serial>
>
>          <console type='pty' tty='/dev/pts/2'>
>              <source path='/dev/pts/2'/>
>              <target port='0'/>
>          </console>
>
>          <serial type='pty'>
>              <source path='/dev/pts/2'/>
>              <target port='0'/>
>          </serial>
>
>          <graphics type='vnc' port='-1' autoport='yes' keymap='fr'
> listen='0.0.0.0'/>
>      </devices>
> </domain>
>
>
> Could you help me ?
>
> Regards,
> Doude.
>
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