On Mon, Dec 10, 2018 at 08:39:37 +0000, 吴 雨霖 wrote: > 1.Description of problem: > > It report use migration with shmem device is not supported , when I use the command "virsh migrate --live" to migrate a VM to another host. Migration with shmem was specifically forbidden by commit: commit d17fab69be7a73336d388b805c282037ffb29647 Author: Martin Kletzander <mkletzan redhat com> Date: Tue Sep 20 11:24:49 2016 +0200 qemu: Disable migration with ivshmem It was never safe anyway and as such shouldn't have been enabled in the first place. Future patches will allow hot-(un)pluging of some ivshmem devices as a workaround. Signed-off-by: Martin Kletzander <mkletzan redhat com> That means that there are probably technical reasons which don't allow it to be migrated. Unfortunately the commit message does not go in depth enough here, but you'll need to prove that it's safe now if you ever want to add the support back.
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