qemu-img resize has some limitations with qcow2, but the user is only
told that "this image format does not support resize". Quite confusing,
so add some more detailed error_report() calls and change "this image
format" into "this image".
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
int ret, new_l1_size;
if (offset & 511) {
+ error_report("The new size must be a multiple of 512");
return -EINVAL;
}
/* cannot proceed if image has snapshots */
if (s->nb_snapshots) {
+ error_report("Can't resize an image which has snapshots");
return -ENOTSUP;
}
/* shrinking is currently not supported */
if (offset < bs->total_sectors * 512) {
+ error_report("qcow2 doesn't support shrinking images yet");
return -ENOTSUP;
}
printf("Image resized.\n");
break;
case -ENOTSUP:
- error_report("This image format does not support resize");
+ error_report("This image does not support resize");
break;
case -EACCES:
error_report("Image is read-only");