mds: fix IO error handling in SessionMap

Signed-off-by: John Spray <john.spray@redhat.com>

diff --git a/src/mds/SessionMap.cc b/src/mds/SessionMap.cc
index a32437de2c1f6ea4aa52ba9da0275f350bb9e709..3d2a5f4ba0bb4aefeb3a86bcdd6e974f4d186210 100644 (file)
--- a/src/mds/SessionMap.cc
+++ b/src/mds/SessionMap.cc
@@ -339,8 +339,11 @@ class C_IO_SM_Save : public SessionMapIOContext {
 public:
   C_IO_SM_Save(SessionMap *cm, version_t v) : SessionMapIOContext(cm), version(v) {}
   void finish(int r) override {
-    assert(r == 0);
-    sessionmap->_save_finish(version);
+    if (r != 0) {
+      get_mds()->handle_write_error(r);
+    } else {
+      sessionmap->_save_finish(version);
+    }
   }
 };
 }