PROVIDING DISPERSED STORAGE NETWORK LOCATION INFORMATION OF A HYPERTEXT MARKUP LANGUAGE FILE

• US 20120291099A1
• Filed: 04/18/2012
• Published: 11/15/2012
• Est. Priority Date: 05/09/2011
• Status: Active Grant

• Current Assignee: Pure Storage, Inc.
• Original Assignee: Cleversafe Incorporated (International Business Machines Corporation)
• Inventors: Grube, Gary W., Markison, Timothy W.
• Granted Patent: US 8,707,393 B2
• Time in Patent Office: Days
• US Class Current: 726/3
• CPC Class Codes: G06F 11/1076 Parity data used in redundant arrays of independent storages, e.g. in RAID systems
• CPC Class Codes: G06F 16/182 Distributed file systems
• CPC Class Codes: G06F 16/951 Indexing; Web crawling techniques
• CPC Class Codes: G06F 21/445 by mutual authentication, e.g. between devices or programs
• CPC Class Codes: G06F 21/50 Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
• CPC Class Codes: G06F 21/51 at application loading time, e.g. accepting, rejecting, starting or inhibiting executable software based on integrity or source reliability
• CPC Class Codes: G06F 21/60 Protecting data
• CPC Class Codes: G06F 21/604 Tools and structures for managing or administering access control systems
• CPC Class Codes: G06F 21/805 using a security table for the storage sub-system
• CPC Class Codes: G06F 21/82 Protecting input, output or interconnection devices
• CPC Class Codes: G06F 2211/1028 Distributed, i.e. distributed RAID systems with parity
• 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 61/4511 using domain name system [DNS]
• 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 begins by a dispersed storage (DS) processing module of a domain name system (DNS) server receiving, from a client, a request regarding dispersed storage network (DSN) location information of a hypertext markup language (HTML) file. The method continues with the DS processing module searching a DNS table for an entry regarding the HTML file based on information of the request. When the entry is found, the method continues with the DS processing module ascertaining the DSN location information regarding a plurality of sets of encoded data slices, wherein the HTML file is encoded using a DS error coding function to produce the plurality of sets of encoded data slices and wherein the plurality of sets of encoded data slices is stored in a DSN. The method continues with the DS processing module outputting the DSN location information to the client.

Claims

1. A method for a domain name system (DNS) server, the method comprises:

receiving, from a client, a request regarding dispersed storage network (DSN) location information of a hypertext markup language (HTML) file;

searching a DNS table for an entry regarding the HTML file based on information of the request; and

when the entry is found;

ascertaining the DSN location information regarding a plurality of sets of encoded data slices, wherein the HTML file is encoded using a dispersed storage (DS) error coding function to produce the plurality of sets of encoded data slices and wherein the plurality of sets of encoded data slices is stored in a DSN; and

outputting the DSN location information to the client.

2. The method of claim 1 further comprises:

the request is a retrieval request that includes at least one of;

an identifier of the DSN;

a universal record locator (URL) associated with the HTML file; and

a source name associated with the plurality of sets of encoded data slices; and

searching the DNS table for the entry based on the at least one of;

the identifier of the DSN, the URL, and the source name.

3. The method of claim 2 further comprises:

the retrieval request includes the source name; and

searching the DNS table for the entry based on the source name.

4. The method of claim 1, wherein the outputting the DSN location information further comprises:

determining whether accessing the HTML file requires authentication; and

when accessing the HTML file requires authentication;

outputting, to the client, a DSN internet protocol (IP) address for a DSN management server; and

when an authentication notice is received, outputting the DSN location information to the client.

5. The method of claim 1, wherein the outputting the DSN location information further comprises:

determining whether accessing the HTML file requires authentication; and

when accessing the HTML file requires authentication;

outputting a DSN authentication request to a DSN management server based on a DSN internet protocol address;

receiving, from the DSN management server, a DSN authentication response that includes a signed certificate; and

outputting the DSN location information and the signed certificate to the client.

6. The method of claim 5 further comprises:

storing the signed certificate for subsequent retrieval requests for the HTML file by the client.

7. The method of claim 1 further comprises:

when the request is a creation request to create the entry in the DNS table;

creating the entry to include one or more of;

an identifier of the DSN;

a universal record locator (URL) associated with the HTML file;

a source name associated with the plurality of sets of encoded data slices; and

a DSN internet protocol (IP) address for a DSN management server.

8. The method of claim 1 further comprises:

updating the DNS table by one or more of;

accessing a DSN index of the DSN based on a domain name of the DSN to retrieve a plurality of source names that includes the source name; and

accessing a slice location table utilizing the source name to retrieve a set of DS unit internet protocol addresses.

9. The method of claim 1, wherein the DSN location information comprises at least one of:

a set of DS unit internet protocol addresses;

a plurality of sets of slice names associated with the plurality of sets of encoded data slices;

an identifier of the DSN; and

a DSN internet protocol (IP) address for a DSN management server.

10. A dispersed storage (DS) module comprises:

a first module, when operable within a computing device, causes the computing device to;

receive, from a client, a request regarding dispersed storage network (DSN) location information of a hypertext markup language (HTML) file;

a second module, when operable within the computing device, causes the computing device to;

search a domain name system (DNS) table for an entry regarding the HTML file based on information of the request;

a third module, when operable within the computing device, causes the computing device to;

when the entry is found, ascertaining the DSN location information regarding a plurality of sets of encoded data slices, wherein the HTML file is encoded using a DS error coding function to produce the plurality of sets of encoded data slices and wherein the plurality of sets of encoded data slices is stored in a DSN; and

a fourth module, when operable within the computing device, causes the computing device to;

output the DSN location information to the client.

11. The DS module of claim 10 further comprises:

the request is a retrieval request that includes at least one of;

an identifier of the DSN;

a universal record locator (URL) associated with the HTML file; and

a source name associated with the plurality of sets of encoded data slices; and

the second module further functions to;

search the DNS table for the entry based on the at least one of;

the identifier of the DSN, the URL, and the source name.

12. The DS module of claim 11 further comprises:

the retrieval request includes the source name; and

the second module further functions to;

search the DNS table for the entry based on the source name.

13. The DS module of claim 10, wherein the fourth module further functions to output the DSN location information by:

determining whether accessing the HTML file requires authentication; and

when accessing the HTML file requires authentication;

outputting, to the client, a DSN internet protocol (IP) address for a DSN management server; and

when an authentication notice is received, outputting the DSN location information to the client.

14. The DS module of claim 10, wherein the fourth module further functions to output the DSN location information by:

determining whether accessing the HTML file requires authentication; and

when accessing the HTML file requires authentication;

outputting a DSN authentication request to a DSN management server based on a DSN internet protocol address;

receiving, from the DSN management server, a DSN authentication response that includes a signed certificate; and

outputting the DSN location information and the signed certificate to the client.

15. The DS module of claim 10 further comprises:

a fifth module, when operable within the computing device, causes the computing device to;

when the request is a creation request to create the entry in the DNS table, create the entry to include one or more of;

an identifier of the DSN;

a universal record locator (URL) associated with the HTML file;

a source name associated with the plurality of sets of encoded data slices; and

a DSN internet protocol (IP) address for a DSN management server.

16. The DS module of claim 10 further comprises:

a sixth module, when operable within the computing device, causes the computing device to;

update the DNS table by one or more of;

accessing a DSN index of the DSN based on a domain name of the DSN to retrieve a plurality of source names that includes the source name; and

accessing a slice location table utilizing the source name to retrieve a set of DS unit internet protocol addresses.

17. The DS module of claim 10, wherein the DSN location information comprises at least one of:

a set of DS unit internet protocol addresses;

a plurality of sets of slice names associated with the plurality of sets of encoded data slices;

an identifier of the DSN; and

a DSN internet protocol (IP) address for a DSN management server.