diff options
| author |   Kevin Wolf <kwolf@redhat.com> | 2010-01-27 13:12:35 +0100 |
|---|---|---|
| committer |   Anthony Liguori <aliguori@us.ibm.com> | 2010-01-29 10:21:20 -0600 |
| commit | 096109c8049f2821f57561f4b24d7f51c6d53ddd (patch) | |
| tree | cc4e7c6731c25018014b54c283ff715d0047ec60 /hw | |
| parent | virtio_blk: Factor virtio_blk_handle_request out (diff) | |
| download | qemu-kvm-096109c8049f2821f57561f4b24d7f51c6d53ddd.tar.gz qemu-kvm-096109c8049f2821f57561f4b24d7f51c6d53ddd.tar.bz2 qemu-kvm-096109c8049f2821f57561f4b24d7f51c6d53ddd.zip | |
virtio-blk: Fix restart after read error
Current code assumes that only write requests are ever going to be restarted.
This is wrong since rerror=stop exists. Instead of directly starting writes,
use the same request processing as used for new requests.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
(cherry picked from commit f1b5286803ee66f73034f1f5e0e1cf14f4415f94)
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/virtio-blk.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c index 83248de49..136e46062 100644 --- a/hw/virtio-blk.c +++ b/hw/virtio-blk.c @@ -387,6 +387,10 @@ static void virtio_blk_dma_restart_bh(void *opaque) { VirtIOBlock *s = opaque; VirtIOBlockReq *req = s->rq; + MultiReqBuffer mrb = { + .num_writes = 0, + .old_bs = NULL, + }; qemu_bh_delete(s->bh); s->bh = NULL; @@ -394,10 +398,13 @@ static void virtio_blk_dma_restart_bh(void *opaque) s->rq = NULL; while (req) { - bdrv_aio_writev(req->dev->bs, req->out->sector, &req->qiov, - req->qiov.size / 512, virtio_blk_rw_complete, req); + virtio_blk_handle_request(req, &mrb); req = req->next; } + + if (mrb.num_writes > 0) { + do_multiwrite(mrb.old_bs, mrb.blkreq, mrb.num_writes); + } } static void virtio_blk_dma_restart_cb(void *opaque, int running, int reason) |