Merge PR ceph#58950 into main

* refs/pull/58950/head:
	mds: add the event when creating the batch head
	mds: print the path depth to help debug mds issue

Reviewed-by: Patrick Donnelly <[email protected]>

Author: batrick

src/mds/MDCache.cc

@@ -8339,7 +8339,8 @@ int MDCache::path_traverse(const MDRequestRef& mdr, MDSContextFactory& cf,
 
   if (mds->logger) mds->logger->inc(l_mds_traverse);
 
-  dout(7) << "traverse: opening base ino " << path.get_ino() << " snap " << snapid << dendl;
+  dout(7) << "traverse: opening base ino " << path.get_ino() << " snap " << snapid
+          << " path depth " << path.depth() << dendl;
   CInode *cur = get_inode(path.get_ino());
   if (!cur) {
     if (MDS_INO_IS_MDSDIR(path.get_ino())) {

src/mds/Server.cc

@@ -4147,6 +4147,7 @@ void Server::handle_client_getattr(const MDRequestRef& mdr, bool is_lookup)
       auto em = dn->batch_ops.emplace(std::piecewise_construct, std::forward_as_tuple(mask), std::forward_as_tuple());
       if (em.second) {
 	em.first->second = std::make_unique<Batch_Getattr_Lookup>(this, mdr);
+        mdr->mark_event("creating lookup batch head");
       } else {
 	dout(20) << __func__ << ": LOOKUP op, wait for previous same getattr ops to respond. " << *mdr << dendl;
 	em.first->second->add_request(mdr);
@@ -4159,6 +4160,7 @@ void Server::handle_client_getattr(const MDRequestRef& mdr, bool is_lookup)
       auto em = in->batch_ops.emplace(std::piecewise_construct, std::forward_as_tuple(mask), std::forward_as_tuple());
       if (em.second) {
 	em.first->second = std::make_unique<Batch_Getattr_Lookup>(this, mdr);
+        mdr->mark_event("creating getattr batch head");
       } else {
 	dout(20) << __func__ << ": GETATTR op, wait for previous same getattr ops to respond. " << *mdr << dendl;
 	em.first->second->add_request(mdr);