Patent ID: 8712975
Filing Date: 2014-04-29
Classification: G06F,H04L

Abstract:
1. A method for managing data items in a distributed storage pool, comprising: providing a plurality of physical storage pools, each storage pool including a plurality of storage nodes coupled to a network, each storage node further providing a non-transitory computer readable medium for data storage; storing a first replica of a data item in a first physical storage pool, and storing a second replica of the data item in a second physical storage pool; in response to receiving a modification instruction for the data item, selectively modifying the first replica of the data item, creating a first modification sentinel file and storing the first modification sentinel file in the first physical storage pool; in response to encountering the first modification sentinel file during a data item replication process, modifying the second replica of the data item and creating a second modification sentinel file in the second physical storage pool; and applying a hash function to a name of the first replica of the data item, wherein the first modification sentinel file includes a first output of the hash function.