Patent ID: 8683152
Filing Date: 2014-03-25
Classification: G06F

Abstract:
1. A method of converting a read-only replica of a source virtual volume in a source virtual storage partition associated with a source aggregate of a source storage system at a destination storage system to a writable destination virtual volume therein, comprising: reading, through a file system at the destination storage system, a superblock of the read-only replica of the source virtual volume at the destination storage system, modifying the superblock of the read-only replica in a memory of the destination storage system to clear a replica flag associated therewith through the replication engine; associating, through the file system at the destination storage system, the modified superblock with at least one virtual volume block number (virtual VBN) configured to be previously associated with the superblock of the read-only replica of the source virtual volume of the source storage system without initiating a destination consistency point (DCP) at the destination storage system to render the destination virtual volume writable, modifying a disk group label indicating an association of the destination storage disk with the read-only replica of the source virtual volume of the source storage system to reflect an association of the destination storage disk with the writable destination virtual volume; and initiating the DCP to ensure that the modified superblock and the modified disk group label associated with the writable destination virtual volume are flushed to the destination storage disk.