Add support for qcow2 source. New option says to use test-source.qcow2
instead of test-source. Of course, test-source.qcow2 should be
precreated.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Allow benchmark with different kinds of target cache.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>