On 20/11/2015 10:34, Wen Congyang wrote:
> There are still I/O operations when the vm is stopped. For example, stop the
> vm, and do block
> migration. In this case, we don't drain all I/O operation, and may meet the
> following problem:
> qemu-system-x86_64: migration/block.c:731: block_save_complete: Assertion
> `block_mig_state.submitted == 0' failed.
>
> Signed-off-by: Wen Congyang <we...@cn.fujitsu.com>
> ---
> cpus.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/cpus.c b/cpus.c
> index 877bd70..43676fa 100644
> --- a/cpus.c
> +++ b/cpus.c
> @@ -1415,6 +1415,8 @@ int vm_stop_force_state(RunState state)
> return vm_stop(state);
> } else {
> runstate_set(state);
> +
> + bdrv_drain_all();
> /* Make sure to return an error if the flush in a previous vm_stop()
> * failed. */
> return bdrv_flush_all();
>
Queued for 2.5-rc2, thanks!
