I forgot to say: I'm using libvirt 1.2.15
> On 03 Mar 2016, at 11:06, Marc-Aurèle Brothier - Exoscale <[email protected]> > wrote: > > Hi! > > I'm testing the live migration on libvirt + KVM, the VMs are using non-shared > local storage only. If I run a live migration with --copy-storage-full, the > final disk file on the remote host after the migration has a full blown size > of the specified value (10G) in my case, instead of the few MB on the source > host before the migration. Running qemu-img I can see that the ref for the > backing file is gone. > > on source host: > $ ls -lh 3129b8a8-eca4-4b05-878a-66c2771b501f gives me 18MB > $ qemu-img info 3129b8a8-eca4-4b05-878a-66c2771b501f > image: 3129b8a8-eca4-4b05-878a-66c2771b501f > file format: qcow2 > virtual size: 10G (10737418240 bytes) > disk size: 17M > cluster_size: 65536 > backing file: /var/lib/libvirt/images/34fa65ce-483b-4ffa-88f8-75f6ebf670c1 > Format specific information: > compat: 1.1 > lazy refcounts: false > refcount bits: 16 > corrupt: false > >>> I run a migration with --live --copy-storage-all > > on destination host: > $ ls -lh 3129b8a8-eca4-4b05-878a-66c2771b501f gives me 11GB > $ qemu-img info 3129b8a8-eca4-4b05-878a-66c2771b501f > image: 3129b8a8-eca4-4b05-878a-66c2771b501f > file format: qcow2 > virtual size: 10G (10737418240 bytes) > disk size: 817M > cluster_size: 65536 > Format specific information: > compat: 0.10 > refcount bits: 16 > > Is there a way to keep the backing file reference for live migration or > planned development (if this file is also available on the destination host)? > > I also tried with --copy-storage-inc but the disk image on the destination is > invalid as it lost the backing file and only copied the diff, so the base > image files are gonne. Moreover, the file size on the disk is also of 10GB > with that parameter. > > Regards, > > Marc-Aurèle Brothier > Exoscale > > _______________________________________________ > libvirt-users mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/libvirt-users > _______________________________________________ libvirt-users mailing list [email protected] https://www.redhat.com/mailman/listinfo/libvirt-users
