[sheepdog] [PATCH update] sheep: don't exit at EIO

[Liu Yuan]

From: Liu Yuan <tailai.ly at taobao.com>

We don't work with local driver yet because it doesn't handle LEAVE correctly,
but I have tested with corosync, it works:

the failed node can act as a gateway node seamlessly.

Signed-off-by: Liu Yuan <tailai.ly at taobao.com>
---
 sheep/request.c |   17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/sheep/request.c b/sheep/request.c
index 91a84b5..0923b8c 100644
--- a/sheep/request.c
+++ b/sheep/request.c
@@ -46,13 +46,19 @@ static void io_op_done(struct work *work)
 {
 	struct request *req = container_of(work, struct request, work);
 
-	if (req->rp.result == SD_RES_EIO) {
+	switch (req->rp.result) {
+	case SD_RES_EIO:
 		req->rp.result = SD_RES_NETWORK_ERROR;
 
 		eprintf("leaving sheepdog cluster\n");
 		leave_cluster();
-		/* TODO: make this node work as a gateway */
-		exit(1);
+		break;
+	case SD_RES_SUCCESS:
+		break;
+	default:
+		dprintf("unhandled error %d\n", req->rp.result);
+		break;
+
 	}
 
 	put_request(req);
@@ -92,13 +98,14 @@ static void gateway_op_done(struct work *work)
 		if (is_access_local(req, hdr->obj.oid)) {
 			eprintf("leaving sheepdog cluster\n");
 			leave_cluster();
-			/* TODO: make this node work as a gateway */
-			exit(1);
 			goto retry;
 		}
 		break;
 	case SD_RES_SUCCESS:
 		break;
+	default:
+		dprintf("unhandled error %d\n", req->rp.result);
+		break;
 	}
 
 	put_request(req);
-- 
1.7.10.2