Re: [libvirt] [Qemu-devel] Qemu migration with vhost-user-blk on top of local storage

Hi everyone, I'm working qemu with vhost target (e.g. spdk), and I attempt to migrate VM with 2 local storages. One local storage is a regular file, e.g. /tmp/c74.qcow2, and the other is a malloc bdev that spdk created. This malloc bdev will exported to VM via vhost-user-blk. When I execute following command: virsh migrate --live --persistent --unsafe --undefinesource --copy-storage-all \ --p2p --auto-converge --verbose --desturi qemu+tcp://<uri>/system vm0 The libvirt reports: qemu-2.12.1: error: internal error: unable to execute QEMU command \ 'nbd-server-add': Cannot find device=drive-virtio-disk1 nor \ node_name=drive-virtio-disk1

Does it means that qemu with spdk on top of local storage don't support migration? QEMU: 2.12.1 SPDK: 18.10