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vhost-user-blk: Add support to reconnect backend

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Since we now support the message VHOST_USER_GET_INFLIGHT_FD
and VHOST_USER_SET_INFLIGHT_FD. The backend is able to restart
safely because it can track inflight I/O in shared memory.
This patch allows qemu to reconnect the backend after
connection closed.

Signed-off-by: Xie Yongji <xieyongji@baidu.com>
Signed-off-by: Ni Xun <nixun@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Message-Id: <20190320112646.3712-7-xieyongji@baidu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Xie Yongji 2019-03-20 19:26:45 +08:00 • committed by Michael S. Tsirkin
parent a57f009108
commit 77542d4314
2 changed files with 139 additions and 23 deletions
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3
include/hw/virtio/vhost-user-blk.h
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@ -38,6 +38,9 @@ typedef struct VHostUserBlk {
struct vhost_dev dev;
struct vhost_inflight *inflight;
VhostUserState vhost_user;
struct vhost_virtqueue *vqs;
guint watch;
bool connected;
} VHostUserBlk;
#endif