ceph: fix availability check of mds cluster

we should apply the check after getting the initial mdsmap Fixes: http://tracker.ceph.com/issues/18161 Signed-off-by: Yan, Zheng <zyan@redhat.com>
ceph · Jan 4, 2017 · 9c0e972 · 9c0e972
1 parent 297eca1
commit 9c0e972
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
@@ -2136,6 +2136,11 @@ static int __do_request(struct ceph_mds_client *mdsc,
 			dout("do_request mdsmap err %d\n", err);
 			goto finish;
 		}
+		if (mdsc->mdsmap->m_epoch == 0) {
+			dout("do_request no mdsmap, waiting for map\n");
+			list_add(&req->r_wait, &mdsc->waiting_for_map);
+			goto finish;
+		}
 		if (!(mdsc->fsc->mount_options->flags &
 		      CEPH_MOUNT_OPT_MOUNTWAIT) &&
 		    !ceph_mdsmap_is_cluster_available(mdsc->mdsmap)) {