Re: [Qemu-devel] [PATCH v2 6/9] block: vhdx - update log guid in header, and first write tracker

[Stefan Hajnoczi]

On Wed, Jul 31, 2013 at 11:23:51PM -0400, Jeff Cody wrote:
> @@ -998,6 +1006,16 @@ exit:
>  
>  
>  
> +/* Per the spec, on the first write of guest-visible data to the file the
> + * data write guid must be updated in the header */
> +void vhdx_user_visible_write(BlockDriverState *bs, BDRVVHDXState *s)
> +{
> +    if (s->first_visible_write) {
> +        s->first_visible_write = false;
> +        vhdx_update_headers(bs, s, true, NULL);

Error handling is missing.