By the time that qemu 1.7 will be released, enough time will has passed since qemu 1.1, which is the first version to understand version 3 images, that changing the default shouldn't hurt many people any more and the benefits of using the new format outweigh the pain.
qemu-iotests already runs with compat=1.1 by default. Signed-off-by: Kevin Wolf <kw...@redhat.com> --- block/qcow2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/qcow2.c b/block/qcow2.c index 3376901..42ea7ec 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -1402,7 +1402,7 @@ static int qcow2_create(const char *filename, QEMUOptionParameter *options) int flags = 0; size_t cluster_size = DEFAULT_CLUSTER_SIZE; int prealloc = 0; - int version = 2; + int version = 3; /* Read out options */ while (options && options->name) { -- 1.8.1.4