Providing dispersed storage network location information of a hypertext markup language file

• US 8,707,393 B2
• Filed: 04/18/2012
• Issued: 04/22/2014
• Est. Priority Date: 05/09/2011
• Status: Expired due to Fees

• Current Assignee: Pure Storage, Inc.
• Original Assignee: Cleversafe Incorporated (International Business Machines Corporation)
• Inventors: Grube, Gary W., Markison, Timothy W.
• Primary Examiner(s): Reza, Mohammad W
• Application Number:
  US13/450,055
• Publication Number:
  US 20120291099A1
• Time in Patent Office: 734 Days
• Field of Search: 726/3
• 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 for a hypertext markup language (HTML) file;

determining a source name for a DNS table that includes accessing information of the HTML file;

utilizing the source name to retrieve a set of encoded data slices from dispersed storage network (DSN) memory;

decoding the set of encoded data slices to recover the DNS table;

searching the DNS table for an entry regarding the HTML file;

determining whether the request requires authentication;

when the request does not require authentication;

retrieving, from the entry, a set of DSN addresses for a set of storage nodes of the DSN that are storing the HTML file as a plurality of sets of encoded data slices; and

sending the set of DSN addresses to the client such that the client can retrieve the HTML file directly from the set of storage nodes; and

when the request requires authentication;

retrieving, from the entry, a DSN address of a DSN manager of a DSN that includes the set of storage nodes; and

sending the DSN address of the DSN manager to the client, such that the client coordinates with the DSN manager to retrieve the HTML file directly from the set of storage nodes.

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 request includes the source name; and

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

4. The method of claim 1 further comprises:

when the request requires authentication;

retrieving, from the entry, the DSN address of the DSN manager of the DSN that includes the set of storage nodes;

requesting a signed certificate from the DSN manager regarding the client; and

sending the signed certificate and the set of DSN addresses to the client such that the client can retrieve the HTML file directly from the set of storage nodes.

5. The method of claim 4 further comprises:

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

6. 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.

7. 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.

8. 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 for a hypertext markup language (HTML) file;

determine a source name for a domain name system (DNS) table that includes accessing information of the HTML file;

utilize the source name to retrieve a set of encoded data slices from dispersed storage network (DSN) memory; and

decode the set of encoded data slices to recover the DNS table;

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

search the DNS table for an entry regarding the HTML file;

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

determine whether the request requires authentication;

when the request does not require authentication;

retrieve, from the entry, a set of DSN addresses for a set of storage nodes of the DSN that are storing the HTML file as a plurality of sets of encoded data slices; and

send the set of DSN addresses to the client such that the client can retrieve the HTML file directly from the set of storage nodes; and

when the request requires authentication;

retrieve, from the entry, a DSN address of a DSN manager of a DSN that includes the set of storage nodes; and

send the DSN address of the DSN manager to the client, such that the client coordinates with the DSN manager to retrieve the HTML file directly from the set of storage nodes.

9. The DS module of claim 8 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.

10. The DS module of claim 9 further comprises:

the request includes the source name; and

the second module further functions to;

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

11. The DS module of claim 8, wherein the third module further functions to cause the computing device to:

when the request requires authentication;

retrieve, from the entry, the DSN address of the DSN manager of the DSN that includes the set of storage nodes;

request a signed certificate from the DSN manager regarding the client; and

send the signed certificate and the set of DSN addresses to the client such that the client can retrieve the HTML file directly from the set of storage nodes.

12. The DS module of claim 8 further comprises:

a fourth 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.

13. The DS module of claim 8 further comprises:

a fourth 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.