On 09/02/2012 01:53 PM, Jagath Weerasinghe wrote:
Hi All,
Can a VM connected as IEEE802.1Qbh be migrated to a destination host as it were connected as IEEE802.1Qbg? What I wanted to know is, is it possible to change the configuration from IEEE802.1Qbh to IEEE802.1Qbg on the fly?
IIUC, you want to migrate the guest from host A, where it has a network interface connected to 802.1Qbh switch, to host B, where it should be connected to 802.1Qbg switch, right? I see three possibilities to do that, but unfortunately I cannot say if these will work. If the guest has <interface type='network'> and that network has <virtualport type='802.1Qbh'> on host A and <virtualport type='802.1Qbg'> on host B, that might be working as-is. If the guest has <virtualport type='802.1Qbh'> specified in its <interface>, you should be able to change the type using migrate hook [1] on host B. There should be one more option in case the <virtualport> is specified in the guest's <interface>. According to the docs [2], when no "type=" is specified for the <virtualport> element, this should be auto-completed on the domain startup, but that's most probably not applicable for your situation (migration). Is that what you wanted to know? Martin [1] http://libvirt.org/hooks.html#qemu_migration [2] http://libvirt.org/formatdomain.html#elementsNICSVirtual