On 23.11.2012 06:28, liguang wrote:
try to do non-shared migration without bothering to create disk images at target by hand.
consider this situation: 1. non-shared migration virsh migrate --copy-storage-all ... 2. migration fails 3. create disk images required qemu-img create ... 4 migration run smoothly so, try do remove step 2, 3, 4
this kind of usage had been discussed before, http://www.redhat.com/archives/libvir-list/2011-December/msg00451.html
this patch depends on my support offline migration patch: https://www.redhat.com/archives/libvir-list/2012-November/msg00512.html
Signed-off-by: liguang <lig.fnst@cn.fujitsu.com> --- src/qemu/qemu_conf.h | 2 + src/qemu/qemu_driver.c | 1 + src/qemu/qemu_migration.c | 275 ++++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 277 insertions(+), 1 deletions(-)
Actually, I am working on NBD based storage migration. That is nbd-server-* command family (run on dst) + drive-mirror (run on src). There is similar prerequisite - the files on dst MUST have at least the same size as on src. So I will implement main idea of this patch anyway. However, when I'm done I think this one will be longer no needed. The thing is - I need a slightly more general migration cookie - to negotiate if NBD feature is used and on which port. IOW - I am not saying no one shall look at your patch, but maybe we should wait a while until I post my patches and see if they cover yours. Michal