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METHOD AND SYSTEM FOR GENERATING CONSISTENT SNAPSHOTS FOR A GROUP OF DATA OBJECTS
METHOD AND SYSTEM FOR GENERATING CONSISTENT SNAPSHOTS FOR A GROUP OF DATA OBJECTS
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机译:用于为一组数据对象生成一致快照的方法和系统
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摘要
Snapshots that are consistent across a group of data objects are generated. The snapshots are initiated by a coordinator, which transmits a sequence of commands to each storage node hosting a data object within a group of data objects. The first command prepares a data object for a snapshot. After a data object has been successfully prepared, an acknowledgment is sent to the coordinator. Once all appropriate acknowledgments are received, the coordinator sends a command to confirm that a snapshot has been created for each data object in the respective group. After receiving this confirmation, the coordinator takes action to confirm or record the successful completion of the group-consistent snapshot.
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