[libvirt] Block-migrate

I've been playing with the new block-migrate feature, but am unable to get it to work. [root@src ~]# virsh migrate --live --p2p --tunnelled --copy-storage-all 4c5c75b9-decc-41c9-9296-20ca5bd5c355 qemu://dst/system error: Unknown failure /var/log/libvirt/qemu/4c5c75b9-decc-41c9-9296-20ca5bd5c355.log on the destination host shows: bind(unix:/var/run/libvirt/qemu/qemu.tunnelmigrate.dest.4c5c75b9-decc-41c9-9296-20ca5bd5c355): Permission denied Migration failed. Exit code unix:/var/run/libvirt/qemu/qemu.tunnelmigrate.dest.4c5c75b9-decc-41c9-9296-20ca5bd5c355(-22), exiting It seems that qemu is not able to write to that location. [root@dst qemu]# ls -ld /var/run/libvirt/qemu/ drwx------. 2 root root 4096 Aug 7 15:40 /var/run/libvirt/qemu/ As a workaround I gave qemu write permission, and now the block migrate starts. Receiving block device images Completed 100 % Then the migrate command fails: [root@src ~]# virsh migrate --live --p2p --tunnelled --copy-storage-all 4c5c75b9-decc-41c9-9296-20ca5bd5c355 qemu://phy004.tilaa.nl/system error: Unknown failure and the only thing I can find is in /var/log/libvirt/libvirt.log on the destination: 15:40:12.370: error : qemuStreamMigWrite:10376 : cannot write to stream: Broken pipe Maybe I'm using the wrong options for virsh migrate, but they're not described in the manpage. Any hints? Regards, Ruben Kerkhof