mgr/dashboard: fix FS status on old MDS daemons

These may not have the version string.  We already handled
this in the equivalent code in the status module, so just
do the same thing in dashboard.

Fixes: http://tracker.ceph.com/issues/20692
Signed-off-by: John Spray <john.spray@redhat.com>
(cherry picked from commit 800662c2fa3f040992987dc5c635dfbc14f0a0ea)

diff --git a/src/pybind/mgr/dashboard/module.py b/src/pybind/mgr/dashboard/module.py
index ea1e8a7e88bd0c6103468989d4c40f28b60a3da8..10b5c37edb30794d3ef363b31e80485b90dfd50e 100644 (file)
--- a/src/pybind/mgr/dashboard/module.py
+++ b/src/pybind/mgr/dashboard/module.py
@@ -294,7 +294,7 @@ class Module(MgrModule):
                     ) + "/s"
 
                 metadata = self.get_metadata('mds', info['name'])
-                mds_versions[metadata['ceph_version']].append(info['name'])
+                mds_versions[metadata.get('ceph_version', 'unknown')].append(info['name'])
                 rank_table.append(
                     {
                         "rank": rank,
@@ -363,7 +363,7 @@ class Module(MgrModule):
         standby_table = []
         for standby in fsmap['standbys']:
             metadata = self.get_metadata('mds', standby['name'])
-            mds_versions[metadata['ceph_version']].append(standby['name'])
+            mds_versions[metadata.get('ceph_version', 'unknown')].append(standby['name'])
 
             standby_table.append({
                 'name': standby['name']