volumes/fs/nfs: Don't parse rados export objects during FSExport init

Instead we can do it if any export commands are used. This fixes ImportError
raised when FSExport is initialized with cephadm module disabled.

Signed-off-by: Varsha Rao <varao@redhat.com>

diff --git a/src/pybind/mgr/volumes/fs/nfs.py b/src/pybind/mgr/volumes/fs/nfs.py
index 69fb0200cd91a7c5fad64e05c3c7a8f324a9fa77..7a3a4a4afe36886f973a00d8078eca46ec543c57 100644 (file)
--- a/src/pybind/mgr/volumes/fs/nfs.py
+++ b/src/pybind/mgr/volumes/fs/nfs.py
@@ -374,19 +374,7 @@ class FSExport(object):
         self.mgr = mgr
         self.rados_pool = 'nfs-ganesha'
         self.rados_namespace = namespace
-        self.exports = {}
-
-        try:
-            log.info("Begin export parsing")
-            for cluster_id in available_clusters(self.mgr):
-                self.export_conf_objs = []  # type: List[Export]
-                self._read_raw_config(cluster_id)
-                self.exports[cluster_id] = self.export_conf_objs
-            log.info(f"Exports parsed successfully {self.exports.items()}")
-        except orchestrator.NoOrchestrator:
-            # Pass it for vstart
-            log.info("Orchestrator not found")
-            pass
+        self._exports = None
 
     @staticmethod
     def _check_rados_notify(ioctx, obj):
@@ -395,6 +383,18 @@ class FSExport(object):
         except TimedOut:
             log.exception(f"Ganesha timed out")
 
+    @property
+    def exports(self):
+        if self._exports is None:
+            self._exports = {}
+            log.info("Begin export parsing")
+            for cluster_id in available_clusters(self.mgr):
+                self.export_conf_objs = []  # type: List[Export]
+                self._read_raw_config(cluster_id)
+                self.exports[cluster_id] = self.export_conf_objs
+                log.info(f"Exports parsed successfully {self.exports.items()}")
+        return self._exports
+
     def _fetch_export(self, pseudo_path):
         try:
             for ex in self.exports[self.rados_namespace]: