[libvirt-users] (no subject)

Michal Privoznik mprivozn at redhat.com
Wed Mar 23 13:29:43 UTC 2016


On 23.03.2016 14:13, nidhi d wrote:
> How is the traffic different when using the tunnelled option rather than
> ssh without tunnelling?

There are two migration streams here:

1) libvirt (used to transfer libvirt's internal state of domain onto the
other side)
2) qemu (used to transfer qemu's internal state of domain onto the other
side)

specifying bare qemu+ssh:/// makes libvirt pack its stream into an ssh
stream, but says nothing about qemu stream. Using tunnelling tells
libvirt to encapsulate qemu migration stream into its own stream and
thus into ssh stream too.

Michal




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