Patent ID: 8370715
Filing Date: 2013-02-05
Classification: G06F

Abstract:
1. An article of manufacture comprising a non-transitory computer readable storage medium having code executed to cause operations with respect to a storage device and a memory and to cause operations comprising: storing addressable blocks of data in the storage device in stripes, wherein each stripe includes a plurality of data blocks for one of the addressable blocks and at least one checksum block including checksum data derived from the data blocks for the addressable block stored in the stripe having the addressable block; receiving a write request to modify data in one of the addressable blocks in the storage device; performing the write and updating the at least one checksum block in the stripe having the modified addressable block, wherein the modified data and the updated at least one checksum block resulting from the write are destaged to the storage device; indicating in a recently modified list in the memory, the addressable block modified in response to the write request; performing an error checking operation on the stripes of the addressable blocks by performing: