INTEGRATED CLIENT FOR USE WITH A DISPERSED DATA STORAGE NETWORK

• US 20150172386A1
• Filed: 02/23/2015
• Published: 06/18/2015
• Est. Priority Date: 10/09/2007
• Status: Active Grant

• Current Assignee: Pure Storage, Inc.
• Original Assignee: Cleversafe Incorporated (International Business Machines Corporation)
• Inventors: Palthepu, Srinivas, Thornton, Vance T., Baptist, Andrew, Dhuse, Greg, Young, Jesse L., Quigley, John
• Granted Patent: US 10,270,855 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/182 Distributed file systems
• CPC Class Codes: H04L 67/1097 for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]

Abstract

A method with a computer generating a first set of access requests regarding a first set of encoded data slices and storage units of a dispersed storage network. A first data segment is encoded into the first set of encoded data slices. The method continues with the computer generating a second set of access requests regarding a second set of encoded data slices and the storage units. A second data segment is encoded into the second set of encoded data slices. The method continues with the computer grouping the first set of access requests and the second set of access requests to produce a set of combined requests. The method continues with the computer sending the set of combined requests to the storage units.

Claims

1. A method for execution by a computer, the method comprises:

generating a first set of access requests regarding a first set of encoded data slices and storage units of a dispersed storage network, wherein a first data segment is encoded into the first set of encoded data slices, wherein the first set of encoded data slices includes “

n”

number of encoded data slices, and wherein a decode threshold number of encoded data slices of the first set of encoded data slices is needed to recover the first data segment;

generating a second set of access requests regarding a second set of encoded data slices and the storage units, wherein a second data segment is encoded into the second set of encoded data slices, wherein the second set of encoded data slices includes the “

n”

number of encoded data slices, and wherein the decode threshold number of encoded data slices of the second set of encoded data slices is needed to recover the second data segment;

grouping the first set of access requests and the second set of access requests to produce a set of combined requests; and

sending the set of combined requests to the storage units.

2. The method of claim 1 further comprises:

generating the first set of access requests as a set of read requests for reading the first set of encoded data slices from the storage units; and

generating the second set of access requests as a set of write requests for writing the second set of encoded data slices to the storage units.

3. The method of claim 2 further comprises:

generating a first read request of the set of read requests;

generating a first write request of the set of write requests; and

combining the first read request and the first write request into a first combined request of the set of combined requests.

4. The method of claim 1 further comprises:

generating the first set of access requests as a set of read requests for reading the first set of encoded data slices from the storage units; and

generating the second set of access requests as a second set of read requests for reading the second set of encoded data slices from the storage units.

5. The method of claim 1 further comprises:

generating the first set of access requests such that each access request of the first set of access requests includes a first data source identifier that is based a vault identifier; and

generating the second set of access requests such that each access request of the second set of access requests includes a second data source identifier that is based the vault identifier.

6. The method of claim 5 further comprises:

generating the first set of access requests such that the first data source identifier further includes a first random number; and

generating the second set of access requests such that the second data source identifier includes a second random number.

7. The method of claim 1 further comprises:

when the second set of access requests corresponds to a set of write requests, affiliating a write transaction with the second set of access requests such that, when the second set of access requests is not successfully executed, the write transaction is rolled back.

8. The method of claim 1 further comprises:

when the second set of access requests corresponds to a set of write requests;

determining a segmenting strategy regarding data to be stored in the storage units; and

segmenting the data to be stored in accordance with the segmenting strategy to produce one or more data segments that includes the second data segment.

9. A computer comprises:

a network port adaptively coupled to a network in communication with slice servers of a distributed storage network (DSN); and

a client program operating on the computer, the client program adapted to;

generate a first set of access requests regarding a first set of encoded data slices and storage units of a dispersed storage network, wherein a first data segment is encoded into the first set of encoded data slices, wherein the first set of encoded data slices includes “

n”

number of encoded data slices, and wherein a decode threshold number of encoded data slices of the first set of encoded data slices is needed to recover the first data segment;

generate a second set of access requests regarding a second set of encoded data slices and the storage units, wherein a second data segment is encoded into the second set of encoded data slices, wherein the second set of encoded data slices includes the “

n”

number of encoded data slices, and wherein the decode threshold number of encoded data slices of the second set of encoded data slices is needed to recover the second data segment;

group the first set of access requests and the second set of access requests to produce a set of combined requests; and

send, via the network port, the set of combined requests to the storage units.

10. The computer of claim 9, wherein the client program is further adapted to:

generate the first set of access requests as a set of read requests for reading the first set of encoded data slices from the storage units; and

generate the second set of access requests as a set of write requests for writing the second set of encoded data slices to the storage units.

11. The computer of claim 10, wherein the client program is further adapted to:

generate a first read request of the set of read requests;

generate a first write request of the set of write requests; and

combine the first read request and the first write request into a first combined request of the set of combined requests.

12. The computer of claim 9, wherein the client program is further adapted to:

generate the first set of access requests as a set of read requests for reading the first set of encoded data slices from the storage units; and

generate the second set of access requests as a second set of read requests for reading the second set of encoded data slices from the storage units.

13. The computer of claim 9, wherein the client program is further adapted to:

generate the first set of access requests such that each access request of the first set of access requests includes a first data source identifier that is based a vault identifier; and

generate the second set of access requests such that each access request of the second set of access requests includes a second data source identifier that is based the vault identifier.

14. The computer of claim 13, wherein the client program is further adapted to:

generate the first set of access requests such that the first data source identifier further includes a first random number; and

generate the second set of access requests such that the second data source identifier includes a second random number.

15. The computer of claim 9, wherein the client program is further adapted to:

when the second set of access requests corresponds to a set of write requests, affiliate a write transaction with the second set of access requests such that, when the second set of access requests is not successfully executed, the write transaction is rolled back.

16. The computer of claim 9, wherein the client program is further adapted to:

when the second set of access requests corresponds to a set of write requests;

determine a segmenting strategy regarding data to be stored in the storage units; and

segment the data to be stored in accordance with the segmenting strategy to produce one or more data segments that includes the second data segment.