Drain and stop the dataplane thread when bdrv_drain_all() is called. Note that the thread will be restarted in virtio_blk_handle_output() the next time the guest kicks the virtqueue.
Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com> --- hw/block/virtio-blk.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c index cf12469..f9c2b79 100644 --- a/hw/block/virtio-blk.c +++ b/hw/block/virtio-blk.c @@ -618,8 +618,20 @@ static void virtio_blk_resize(void *opaque) virtio_notify_config(vdev); } +static void virtio_blk_drain_threads(void *opaque) +{ +#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE + VirtIOBlock *s = VIRTIO_BLK(opaque); + + if (s->dataplane) { + virtio_blk_data_plane_stop(s->dataplane); + } +#endif +} + static const BlockDevOps virtio_block_ops = { .resize_cb = virtio_blk_resize, + .drain_threads_cb = virtio_blk_drain_threads, }; void virtio_blk_set_conf(DeviceState *dev, VirtIOBlkConf *blk) -- 1.8.1.4