Patent ID: 9116726
Filing Date: 2015-08-25
Classification: G06F

Abstract:
1. A method for consolidating a plurality of delta disks included in a delta disk chain associated with a virtual disk, the method comprising: determining that a first delta disk included in the delta disk chain is to be consolidated with a second delta disk included in the delta disk chain, wherein, once consolidated, the second delta disk is to be removed from the delta disk chain; determining that a first data block in the first delta disk corresponds to a second data block in the second delta disk, wherein the second data block stores data reflecting an update to data stored in the first data block; and modifying a reference included in metadata for the first delta disk that points to the first data block to point to a second data block included in the second delta disk, while maintaining a reference included in metadata for the second delta disk that points to the second data block.