mgr/balancer: python3 compatibility issue

Fixes: https://tracker.ceph.com/issues/42370
Signed-off-by: Mykola Golub <mgolub@suse.com>
(cherry picked from commit 97720eddd92f2fd31599ea0cecf2502f600d3bb9)

diff --git a/src/pybind/mgr/balancer/module.py b/src/pybind/mgr/balancer/module.py
index 18d8b55f07b6d0d442f1035fc5b827b02137ea4c..f14a4902702f3faae7c03f78ef42ba52f2496009 100644 (file)
--- a/src/pybind/mgr/balancer/module.py
+++ b/src/pybind/mgr/balancer/module.py
@@ -780,7 +780,7 @@ class Module(MgrModule):
 
         # Make sure roots don't overlap their devices.  If so, we
         # can't proceed.
-        roots = pe.target_by_root.keys()
+        roots = list(pe.target_by_root.keys())
         self.log.debug('roots %s', roots)
         visited = {}
         overlap = {}