mds: output lock state in format dump

dump cache in plain text will print lock state. But in json format dump,
it won't. It is not convenient to debug some MDS lock issues without
such information.

Fixes: http://tracker.ceph.com/issues/39645
Signed-off-by: Zhi Zhang <zhangz.david@outlook.com>
(cherry picked from commit 751289118eaffb4906826ead68f19c5e55c1e4fe)

diff --git a/src/mds/SimpleLock.cc b/src/mds/SimpleLock.cc
index c314c3068f57b8df53e682ae79740d6f152bd4da..c4c0ae0db24737b62b7c7f8b8ae3057f7a0b2a98 100644 (file)
--- a/src/mds/SimpleLock.cc
+++ b/src/mds/SimpleLock.cc
@@ -30,6 +30,7 @@ void SimpleLock::dump(Formatter *f) const {
   }
   f->close_section();
 
+  f->dump_string("state", get_state_name(get_state()));
   f->dump_bool("is_leased", is_leased());
   f->dump_int("num_rdlocks", get_num_rdlocks());
   f->dump_int("num_wrlocks", get_num_wrlocks());