Re: [PATCH] block/rbd: fix write zeroes with growing images

[Hanna Reitz]

On 17.03.22 17:26, Stefano Garzarella wrote:
> Commit d24f80234b ("block/rbd: increase dynamically the image size")
> added a workaround to support growing images (eg. qcow2), resizing
> the image before write operations that exceed the current size.
>
> We recently added support for write zeroes and without the
> workaround we can have problems with qcow2.
>
> So let's move the resize into qemu_rbd_start_co() and do it when
> the command is RBD_AIO_WRITE or RBD_AIO_WRITE_ZEROES.
>
> Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=2020993
> Fixes: c56ac27d2a ("block/rbd: add write zeroes support")
> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
> ---
>   block/rbd.c | 26 ++++++++++++++------------
>   1 file changed, 14 insertions(+), 12 deletions(-)

Thanks, applied to my block branch:

https://gitlab.com/hreitz/qemu/-/commits/block

Hanna