mds: fix check for base inode discovery

If a MDiscover message is for discovering base inode, want_base_dir
should be false, path should be empty.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>

diff --git a/src/mds/MDCache.cc b/src/mds/MDCache.cc
index 5e8f2a5fdeaaddf40f956244b3476fc924db58af..5c2732bf0f352de74e34fd437c53083294c33c31 100644 (file)
--- a/src/mds/MDCache.cc
+++ b/src/mds/MDCache.cc
@@ -9175,7 +9175,8 @@ void MDCache::handle_discover(MDiscover *dis)
   snapid_t snapid = dis->get_snapid();
 
   // get started.
-  if (MDS_INO_IS_BASE(dis->get_base_ino())) {
+  if (MDS_INO_IS_BASE(dis->get_base_ino()) &&
+      !dis->wants_base_dir() && dis->get_want().depth() == 0) {
     // wants root
     dout(7) << "handle_discover from mds." << from
            << " wants base + " << dis->get_want().get_path()