rgw: Fix dynamic resharding not working for empty zonegroup in period

Sometimes when cluster has been upgraded from jewel, the period's zonegroup could be empty, so no dynamic resharding.
This fix should fix it and return true for less than 1 (0) zonegroup in period

Fixes: https://tracker.ceph.com/issues/43188
Signed-off-by: Or Friedmann <ofriedma@redhat.com>

diff --git a/src/rgw/rgw_zone.h b/src/rgw/rgw_zone.h
index 9ce902040b3bde645800d439561328f3930f6740..8673ecdbe7bd8f0b62d233a0a3a8eaf3dbc3a18c 100644 (file)
--- a/src/rgw/rgw_zone.h
+++ b/src/rgw/rgw_zone.h
@@ -1083,7 +1083,7 @@ public:
 
   bool is_single_zonegroup() const
   {
-      return (period_map.zonegroups.size() == 1);
+      return (period_map.zonegroups.size() <= 1);
   }
 
   /*