Each call of the virtio_blk_reset() function calls blk_drain_all(), which works for all existing BlockDriverStates, while draining only one is needed.
This patch replaces blk_drain_all() by blk_drain() in virtio_blk_reset(). Cc: Christian Borntraeger <borntrae...@de.ibm.com> Cc: Cornelia Huck <cornelia.h...@de.ibm.com> Cc: Kevin Wolf <kw...@redhat.com> Cc: Paolo Bonzini <pbonz...@redhat.com> Cc: Stefan Hajnoczi <stefa...@redhat.com> Signed-off-by: Alexander Yarygin <yary...@linux.vnet.ibm.com> --- hw/block/virtio-blk.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c index e6afe97..2009092 100644 --- a/hw/block/virtio-blk.c +++ b/hw/block/virtio-blk.c @@ -652,15 +652,16 @@ static void virtio_blk_reset(VirtIODevice *vdev) { VirtIOBlock *s = VIRTIO_BLK(vdev); - if (s->dataplane) { - virtio_blk_data_plane_stop(s->dataplane); - } - /* * This should cancel pending requests, but can't do nicely until there * are per-device request lists. */ - blk_drain_all(); + blk_drain(s->blk); + + if (s->dataplane) { + virtio_blk_data_plane_stop(s->dataplane); + } + blk_set_enable_write_cache(s->blk, s->original_wce); } -- 1.9.1