<html>Hello:<br /><br />I'm trying to upgrade ovirt 3.6.3 to 4.0, but engine-setup complaints about upgrading from incompatible version 3.3<br /><br />I see in the engine-setup log that vds_groups table is checked to determine the compatibility version. The logs shows that engine-setup detects 2 clusters versions: 3.3 and 3.6. Indeed, there is 2 clusters registered in the table: "cluster-3.6" and "Default"<br /><br />"Cluster-3.6" (version 3.6) is the only cluster in DC in my ovirt setup.<br />"Default" (version 3.3) should be a cluster that surely I deleted in a past upgrade.<br /><br />Why a cluster named "Default" (with compatibility version 3.3) is still present in vds_group table? Cluster "Default" isn't displayed anywhere in the web interface.<br /><br />Any clue to solve this issue?<br /><br />Thanks</html>