mon/MDSMonitor: use stringstream instead of dout for mds repaired

Fixes: http://tracker.ceph.com/issues/40472
Signed-off-by: Zhi Zhang <zhangz.david@outlook.com>
(cherry picked from commit 7ad76ea2280f772cb3ebed54530e4848b841da78)

diff --git a/src/mon/MDSMonitor.cc b/src/mon/MDSMonitor.cc
index 6258c20f861e8c8cbb8368ffe80c6a83a234a073..73dbb15c6df794be0f8bb77282490a386e362ae0 100644 (file)
--- a/src/mon/MDSMonitor.cc
+++ b/src/mon/MDSMonitor.cc
@@ -1459,9 +1459,9 @@ int MDSMonitor::filesystem_command(
 
     bool modified = fsmap.undamaged(role.fscid, role.rank);
     if (modified) {
-      dout(1) << "repaired: restoring rank " << role << dendl;
+      ss << "repaired: restoring rank " << role;
     } else {
-      dout(1) << "repaired: no-op on rank " << role << dendl;
+      ss << "nothing to do: rank is not damaged";
     }
 
     r = 0;