On Wed, Jul 03, 2013 at 04:34:20PM +0200, Paolo Bonzini wrote:
> diff --git a/qemu-img.c b/qemu-img.c
> index f8c97d3..857e2ca 100644
> --- a/qemu-img.c
> +++ b/qemu-img.c
> @@ -2073,6 +2073,10 @@ static int img_rebase(int argc, char **argv)
>
> /* If the cluster is allocated, we don't need to take action */
> ret = bdrv_is_allocated(bs, sector, n, &n);
> + if (ret < 0) {
> + error_report("error while reading from file");
> + goto out;
> + }
We should print the errno valid and saying "while reading from file" is
a little misleading:
"error while checking cluster allocation status: %d", ret
