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



Hi Kei,

I use the Diablo release of openStack and I didn't change anything in
the libvirt XML template.
I can saw a difference for the console file.
The trunk version of Nova use a file for the logging console but the
Diablo Release use a pipe.

Can I change it manually ? Must I open a bur for Diablo release ?

Regards,
Doude.

On Thu, Nov 17, 2011 at 2:23 PM, Kei.masumoto <kei masumoto gmail com> wrote:
> 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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>
>


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