On 23/05/2018 16:46, Greg Kurz wrote:
> Maybe change bdrv_root_unref_child() to ensure we don't call
> bdrv_close() with pending I/O requests ?
>
> void bdrv_root_unref_child(BdrvChild *child)
> {
> BlockDriverState *child_bs;
>
> child_bs = child->bs;
> + bdrv_drained_begin(child_bs);
> bdrv_detach_child(child);
> + bdrv_drained_end(child_bs);
> bdrv_unref(child_bs);
> }Maybe bdrv_detach_child should do it. Paolo
