Thanx. On Mon, Apr 15, 2013 at 8:01 PM, Eric Blake <[email protected]> wrote:
> On 04/12/2013 07:28 AM, digvijay chauhan wrote: > > Hello, > > I am working on live migration of virtual machine using xen and > > kvm.If i use qemu+ssh:///system then is the transport protocol used > during > > live migration tcp or ssh?I mean i want to evaluate the performance of > > transport protocil during live migration using wireshark and netperf > > tool,so using this command will show tcp performance? > > > > Orelse i will have to use qemu+tcp:/// ? > > I'd start by reading and understanding this page: > http://libvirt.org/migration.html > > If you do native migration, then it uses whatever protocol the native > hypervisor uses (qemu only supports direct tcp), through a separate > port. If you use tunnelled migration, then the migration is multiplexed > onto libvirt's connection (no additional open port required), and the > transport then depends on however you connected to libvirt (whether it > is straight TCP or whether it is using SSH depends on the URI of how you > connected). Tunnelled migration is inherently slower, since there are > more copies involved - qemu -> libvirtd source -> libvirtd destination > -> qemu; compared to native migration of qemu -> qemu. But it also > provides the possibility of SSH or TLS encryption, if you don't want > migration going across the wire unencrypted (since qemu does not yet > support encrypted migration natively). > > -- > Eric Blake eblake redhat com +1-919-301-3266 > Libvirt virtualization library http://libvirt.org > >
_______________________________________________ libvirt-users mailing list [email protected] https://www.redhat.com/mailman/listinfo/libvirt-users
