Citrix Xen server 5.5 and snapshots

recently I’ve upgraded my newly installed Xen server from 5.0 to 5.5. And I found that upgraded system won’t took snapshots.

15.01.2010 21:51:46 Error: Snapshotting VM 'apache_db'... - The operation cannot be performed until the SR has been upgraded

such error appeared when I tried to create snapshot.

this issue can be fixed after upgrading local storage to Storage Repository by doing a right-click to Local Storage