Mapping data blocks to storage blocks to wrap around storage devices

An article of manufacture for mapping data blocks to storage blocks, wherein the article of manufacture comprises a computer readable storage medium storing instructions executed by a processor, and wherein the article of manufacture is operable to:

• receive a portion of data;
• segment the portion of data into one or more data blocks;
• map the one or more data blocks to one or more storage blocks of one or more storage devices, wherein the one or more data blocks are mapped to wrap around the storage devices after each of the storage devices has been utilized, by, for each of the one or more storage blocks,
• comparing (i+j) to (N−1) for a storage block B[i,j], wherein i is a number representing a particular storage device and j is a number representing a stripe, wherein a stripe includes one or more storage blocks from each of the one or more storage devices, and wherein N represents a total number of storage devices;
• in response to determining that (i+j)<(N−1) for the storage block B[i,j], storing a data block D[N*i+j] to the storage block B[i,j];
• and
• in response to determining that (i+j)>(N−1) for the storage block B[i,j], storing a data block D[N*(i+1)+j] to the storage block B[i,j];
• and
• in response to receiving a sequential access request spanning N consecutive data blocks, use N storage devices to service the request.

A system for mapping data blocks to storage blocks, comprising:

• circuitry at an Input/Output processor operable to:
• receive a portion of data;
• segment the portion of data into one or more data blocks;
• map the one or more data blocks to one or more storage blocks of one or more storage devices, wherein the one or more data blocks are mapped to wrap around the storage devices after each of the storage devices has been utilized, by, for each of the one or more storage blocks,
• comparing (i+j) to (N−1) for a storage block B[i,j], wherein i is a number representing a particular storage device and j is a number representing a stripe, wherein a stripe includes one or more storage blocks from each of the one or more storage devices, and wherein N represents a total number of storage devices;
• in response to determining that (i+j)<(N−1) for the storage block B[i,j], storing a data block D[N*(i+j] to the storage block B[i,j];
• and
• in response to determining that (i+j)>(N−1) for the storage block B[i,j], storing a data block D[N*(i−1)+j] to the storage block B[i,j];
• and
• in response to receiving a sequential access request spanning N consecutive data blocks, use N storage devices to service the request.