On Fri, Sep 07, 2012 at 05:11:33PM +0200, Paolo Bonzini wrote:
> This is a bug that has to be fixed anyway. There are provisions in
> aio.c, but they are broken apparently. Can you try this:
>
> diff --git a/aio.c b/aio.c
> index 0a9eb10..99b8b72 100644
> --- a/aio.c
> +++ b/aio.c
> @@ -119,7 +119,7 @@ bool qemu_aio_wait(void)
> return true;
> }
>
> - walking_handlers = 1;
> + walking_handlers++;
>
> FD_ZERO(&rdfds);
> FD_ZERO(&wrfds);
> @@ -147,7 +147,7 @@ bool qemu_aio_wait(void)
> }
> }
>
> - walking_handlers = 0;
> + walking_handlers--;
>
> /* No AIO operations? Get us out of here */
> if (!busy) {
> @@ -159,7 +159,7 @@ bool qemu_aio_wait(void)
>
> /* if we have any readable fds, dispatch event */
> if (ret > 0) {
> - walking_handlers = 1;
> + walking_handlers++;
>
> /* we have to walk very carefully in case
> * qemu_aio_set_fd_handler is called while we're walking */
> @@ -187,7 +187,7 @@ bool qemu_aio_wait(void)
> }
> }
>
> - walking_handlers = 0;
> + walking_handlers--;
> }
>
> return true;
>
This works. I am able to create qcow2 files on gluster backend with this fix.
Regards,
Bharata.
