On Sun, Feb 10, 2013 at 3:48 AM, Reno Gan <reno....@gmail.com> wrote: > Another thing i want to mention about live block migration, though i > don't know if this is really an issue of qemu or downstream libvirt. > > When I was testing live migration of qemu-kvm-1.2.0 for long run, i > found a problem that block data are not completed transferred to target > host. I traced that and found block migration thinks migration is > completed when "block_mig_state.submitted == 0", but actually in some > cases, data are not really transferred yet. > > I think the reasonable judgement for whether block migration is > completed is "block_mig_state.submitted == 0 && > block_mig_state.read_done == 0", that is all data have been transferred. > > I don't see anything about this in block-migration-fixes-for-1.4. Maybe > it has been addressed somewhere else, but if it is not, please consider > this issue and make sure data is integrated during block migration.
Is there a way to reproduce this issue easily? How do you know that not all data has been transferred? Stefan
