Security checks for proxied requests

• US 10,203,877 B2
• Filed: 09/29/2017
• Issued: 02/12/2019
• Est. Priority Date: 12/29/2009
• Status: Active Grant

• Current Assignee: Pure Storage, Inc.
• Original Assignee: International Business Machines Corporation
• Inventors: Motwani, Manish, Resch, Jason K.
• Primary Examiner(s): Parry, Chris
• Assistant Examiner(s): Stiltner, Weiwei Y
• Application Number:
  US15/721,402
• Publication Number:
  US 20180039420A1
• Time in Patent Office: 501 Days
• Field of Search: 709213-215, 707602, 707756, 707635
• CPC Class Codes: G06F 11/1076 Parity data used in redundant arrays of independent storages, e.g. in RAID systems
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: G06F 21/80 in storage media based on magnetic or optical technology, e.g. disks with sectors preventing unauthorised reproduction or copying of disc-type recordable media G11B20/00
• CPC Class Codes: G06F 2221/2129 Authenticate client device independently of the user
• CPC Class Codes: G06F 2221/2151 Time stamp
• CPC Class Codes: G06F 3/0607 by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
• CPC Class Codes: G06F 3/0619 in relation to data integrity, e.g. data losses, bit errors
• CPC Class Codes: G06F 3/0634 by changing the state or mode of one or more devices
• CPC Class Codes: G06F 3/0637 Permissions
• CPC Class Codes: G06F 3/064 Management of blocks
• CPC Class Codes: G06F 3/0647 Migration mechanisms
• CPC Class Codes: G06F 3/0659 Command handling arrangements, e.g. command buffers, queues, command scheduling
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
• CPC Class Codes: H04L 2209/34 Encoding or coding, e.g. Huffman coding or error correction
• CPC Class Codes: H04L 63/101 Access control lists [ACL]
• CPC Class Codes: H04L 63/102 Entity profiles
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]
• 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]
• CPC Class Codes: H04L 9/085 Secret sharing or secret splitting, e.g. threshold schemes
• CPC Class Codes: H04L 9/0894 Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
• CPC Class Codes: H04N 21/2181 : comprising remotely distributed storage units, e.g. when movies are replicated over a plurality of video servers distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS], H04L67/1097
• CPC Class Codes: H04N 21/23116 : involving data replication, e.g. over plural servers synchronization of replicated data G06F11/1658; error detection or correction by means of data replication G06F11/2053; replication in distributed file systems G06F16/10; replication in distributed file systems G06F16/27; replication or mirroring of data in data networks H04L67/1095
• CPC Class Codes: H04N 21/232 : Content retrieval operation locally within server, e.g. reading video streams from disk arrays storage management G06F3/0604; details of querying and searching of video data from a database G06F16/739
• CPC Class Codes: H04N 21/274 : Storing end-user multimedia data in response to end-user request , e.g. network recorder

Abstract

A computer readable storage device of a storage unit of a dispersed storage network (DSN) comprises a first memory section and a second memory section. The first memory section stores operational instructions that cause a processing module of the storage unit to transition storage of encoded data slices from storage based on a previous version of a distributed agreement protocol (DAP) to storage based on a new version of the DAP. The second memory section stores operational instructions that cause the processing module to, during the transitioning of storage of the encoded data slices, receive a proxied data access request from another storage unit, determine whether the other storage unit is an authentic storage unit, and when the other storage unit is the authentic storage unit, process the proxied data access request to produce a data access response.

Claims

1. A computer readable storage device comprises:

a first memory section for storing operational instructions that, when executed by a processing module of a storage unit of a dispersed storage network (DSN), causes the processing module to;

transition storage of one or more groups of encoded data slices from storage based on a previous version of a distributed agreement protocol to storage based on a new version of the distributed agreement protocol; and

a second memory section for storing operational instructions that, when executed by the processing module of the storage unit, causes the processing module to;

while transitioning storage of the one or more groups of encoded data slices;

receive a proxied data access request regarding an encoded data slice from another storage unit of the DSN;

determine whether the other storage unit is an authentic storage unit of the DSN based on at least one of;

the encoded data slice, the previous version of the distributed agreement protocol, and the new version of the distributed agreement protocol;

when the other storage unit is the authentic storage unit, process the proxied data access request to produce a data access response; and

send the data access response to the other storage unit.

2. The computer readable storage device of claim 1, wherein the second memory section stores operational instructions that, when executed by the processing module of the storage unit, causes the processing module to determine whether the other storage unit is the authentic storage unit by:

determining the other storage unit is part of the same vault as the storage unit.

3. The computer readable storage device of claim 1, wherein the second memory section stores operational instructions that, when executed by the processing module of the storage unit, causes the processing module to determine whether the other storage unit is the authentic storage unit by:

determining the encoded data slice is mapped to the other storage unit based on the previous version of the distributed agreement protocol.

4. The computer readable storage device of claim 1, wherein the second memory section stores operational instructions that, when executed by the processing module of the storage unit, causes the processing module to determine whether the other storage unit is the authentic storage unit by:

determining that an ongoing migration task from the other storage unit to the storage unit is active.

5. The computer readable storage device of claim 4, wherein the second memory section stores further operational instructions that, when executed by the processing module of the storage unit, causes the processing module to determine the ongoing migration task by one or more of:

querying a DSN managing unit;

determining the storage unit is concurrently using both the old and new distributed agreement protocol; and

receiving a message indicating to use the new distributed agreement protocol for data access requests.

6. The computer readable storage device of claim 1, wherein the second memory section stores operational instructions that, when executed by the processing module of the storage unit, causes the processing module to determine whether the other storage unit is the authentic storage unit by:

determining the encoded data slice is mapped to the storage unit based on the new version of the distributed agreement protocol.

7. The computer readable storage device of claim 1 further comprises:

a third memory section for storing operational instructions that, when executed by the processing module of the storage unit, causes the processing module to;

when the other storage unit is not the authentic storage unit;

deny the proxied data access request;

when the other storage unit is the authentic storage unit;

identify a second storage unit based on the encoded data slice and the previous distributed agreement protocol; and

send a request to the second storage unit to verify the proxied data access request;

when verified, process the request and send a response to the second storage unit.

8. The computer readable storage device of claim 1 further comprises:

a fourth memory section for storing operational instructions that, when executed by the processing module of the storage unit, causes the processing module to;

receive the new version of the distributed agreement protocol and maintain the previous version of a distributed agreement protocol for processing data access requests regarding the one or more groups of encoded data slices during the transition of storage; and

when the transition of storage is complete, utilize the new version of a distributed agreement protocol for processing data access requests regarding the one or more groups of encoded data slices.