| 主权项 |
1. A system for protecting a plurality of data segments in a virtual tape library in a computing environment, comprising:
at least one processor device, operable in the computing environment, wherein the at least one processor device is adapted for: establishing an initial ownership of the at least one of the plurality of cartridges, including performing:
gaining ownership of a source location at the time of creation of the plurality of data segments,setting an ownership attribute with an ownership identification (ID) of the at least one source location in a grid context for the plurality of data segments,listing the ownership ID of the plurality of data segments in the history table; configuring the ownership history table to accompany each of the plurality of data segments for consultation during a replication operation, wherein the ownership history table updates and lists correct ownership of the data segments,
if the ownership history table indicates an ownership conflict, the replication operation is inhibited,if an error occurs during the replication operation from a source location to a destination location causing at least one of a plurality of data segments to be deleted in the source location,
executing a failback operation by a reverse replication process of the at least one of a plurality of data segments from the destination location to the source location, andregaining ownership of the at least one of a plurality of data segments by the source location; andpursuant to the failback operation,
enabling the reverse replication process if an owner of the at least one of a plurality of data segments is a designated one of the destination location, andadding an invalid owner notification in the history table, wherein the failback operation is identified for the designated one of the at least one destination location. |
