On 06/14/2016 09:25 AM, Denis V. Lunev wrote: > We should not take into account zero blocks for delay calculations. > They are not read and thus IO throttling is not required. In the > other case VM migration with 16 Tb QCOW2 disk with 4 Gb of data takes > days. > > Signed-off-by: Denis V. Lunev <[email protected]> > Reviewed-by: Vladimir Sementsov-Ogievskiy <[email protected]> > CC: Stefan Hajnoczi <[email protected]> > CC: Fam Zheng <[email protected]> > CC: Kevin Wolf <[email protected]> > CC: Max Reitz <[email protected]> > CC: Jeff Cody <[email protected]> > CC: Eric Blake <[email protected]> > --- > block/mirror.c | 7 +++++-- > 1 file changed, 5 insertions(+), 2 deletions(-)
Seems reasonable, but I'll let others more familiar with throttling give the final say. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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