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



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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