[sheepdog] [PATCH 1/2] sheep:fix automatic stale object purging

[wangfan]

If sheep process have differert disk size,after recovery. ./stale directory
still have objects.because in the cluster_recovery_completion function,
the memcmp function parameter vnode_info->nodes and recovereds will have
different nr_vnodes number after recovery completion.so i just compare
node_id to fix this problem.

Signed-off-by: wangfan <wangfan1985 at gmail.com>
---
 sheep/ops.c |   16 ++++++++++------
 1 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/sheep/ops.c b/sheep/ops.c
index b9634ae..670800e 100644
--- a/sheep/ops.c
+++ b/sheep/ops.c
@@ -626,12 +626,16 @@ static int cluster_recovery_completion(const struct sd_req *req,
 
 	vnode_info = get_vnode_info();
 
-	if (vnode_info->nr_nodes == nr_recovereds &&
-	    memcmp(vnode_info->nodes, recovereds,
-		   sizeof(*recovereds) * nr_recovereds) == 0) {
-		sd_dprintf("all nodes are recovered at epoch %d", epoch);
-		if (sd_store->cleanup)
-			sd_store->cleanup();
+	if (vnode_info->nr_nodes == nr_recovereds){
+		for (i = 0; i < nr_recovereds; ++i){
+			if (node_id_cmp(&vnode_info->nodes[i].nid , &recovereds[i].nid))
+				break;
+		}
+		if(i == nr_recovereds){
+			sd_dprintf("all nodes are recovered at epoch %d", epoch);
+			if (sd_store->cleanup)
+				sd_store->cleanup();
+		}
 	}
 
 	put_vnode_info(vnode_info);
-- 
1.7.1