tasks/cephfs: tidy Mount.ls to return [] on empty dir

Previously returned ['']

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

diff --git a/tasks/cephfs/mount.py b/tasks/cephfs/mount.py
index 59008c15a5c402c31947d6d3fd1eb094eea74c39..e8d66b02a958e8700c37b1515cd52727ea7a3450 100644 (file)
--- a/tasks/cephfs/mount.py
+++ b/tasks/cephfs/mount.py
@@ -546,7 +546,15 @@ class CephFSMount(object):
         cmd = ["ls"]
         if path:
             cmd.append(path)
-        return self.run_shell(cmd).stdout.getvalue().strip().split("\n")
+
+        ls_text = self.run_shell(cmd).stdout.getvalue().strip()
+
+        if ls_text:
+            return ls_text.split("\n")
+        else:
+            # Special case because otherwise split on empty string
+            # gives you [''] instead of []
+            return []
 
     def getfattr(self, path, attr):
         """