Merge PR #32505 into master

* refs/pull/32505/head:
	mds: note client features when rejecting client
	mds: add hex indicator to printed feature flags

Reviewed-by: Zheng Yan <zyan@redhat.com>

src/mds/Server.cc

@@ -597,8 +597,9 @@ void Server::handle_client_session(const cref_t<MClientSession> &m)
 	stringstream ss;
 	ss << "missing required features '" << missing_features << "'";
 	send_reject_message(ss.str());
-	mds->clog->warn() << "client session lacks required features '"
-			  << missing_features << "' denied (" << session->info.inst << ")";
+	mds->clog->warn() << "client session (" << session->info.inst
+                          << ") lacks required features " << missing_features
+                          << "; client supports " << client_metadata.features;
 	session->clear();
 	break;
       }

src/mds/mdstypes.cc

@@ -441,6 +441,7 @@ void feature_bitset_t::dump(Formatter *f) const {
 void feature_bitset_t::print(ostream& out) const
 {
   std::ios_base::fmtflags f(out.flags());
+  out << "0x";
   for (int i = _vec.size() - 1; i >= 0; --i)
     out << std::setfill('0') << std::setw(sizeof(block_type) * 2)
         << std::hex << _vec[i];