Patent ID: 9448948
Filing Date: 2016-09-20
CPC Classification: G06F

Claim Text:
1. A method for resynchronization comprising: transmitting from a first storage node to a second storage node a plurality of data segment deletion messages, the first storage node storing a plurality of data segments, each of the plurality of data segments having associated therewith a respective identifier, the second storage node configured to mirror the plurality of data segments stored on the first storage node, the data deletion messages each indicating a respective one or more data segments that have been deleted on the first storage node, wherein a designated identifier associated with a first deleted data segment is not reused to identify a second data segment; detecting reestablishment of communication between the first storage node and the second node after communication between the first storage node and the second storage node has been interrupted; identifying a plurality of deleted data segment ranges on a first storage node, each of the data segment ranges including a respective initial data segment identifier and a respective terminal data segment identifier to indicate a respective sequence of one or more data segments, the plurality of respective sequences of data segments together including the respective one or more data segments indicated in the data deletion messages; and transmitting the plurality of deleted data segment ranges to the second storage node via a network to identify one or more data segments to delete from the second storage node,