SYSTEMS AND METHODS FOR PROVIDING A MODIFICATION HISTORY FOR A LOCATION WITHIN A DATA STORE

• US 20090019459A1
• Filed: 09/28/2007
• Published: 01/15/2009
• Est. Priority Date: 08/24/2004
• Status: Active Grant

• Current Assignee: Veritas Technologies, LLC (Whitehouse Group Ltd.)
• Original Assignee: Symantec Operating Corporation (Gen Digital Inc.)
• Inventors: Rowan, Michael, Rodgers, Kevin
• Granted Patent: US 8,521,973 B2
• Time in Patent Office: Days
• US Class Current: 719/328
• CPC Class Codes: G06F 11/0727 in a storage system, e.g. in a DASD or network based storage system drivers for digital recording or reproducing units G06F3/06; circuits for error detection or correction within digital recording or reproducing units G11B20/18; 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], H04L67/1097
• CPC Class Codes: G06F 11/0751 Error or fault detection not based on redundancy power supply failures G06F1/30; network fault management H04L41/06
• CPC Class Codes: G06F 11/1469 Backup restoration techniques
• CPC Class Codes: G06F 11/1474 in transactions G06F16/20 takes precedence
• CPC Class Codes: G06F 2201/82 Solving problems relating to consistency
• CPC Class Codes: G06F 2201/84 Using snapshots, i.e. a logical point-in-time copy of the data

Abstract

A storage management device can receive a request for a modification history for a location within a data store, determine one or more times at which at least a portion of data stored at the location was modified, and transmit the one or more determined times.

Claims

1-27. -27. (canceled)

28. A method for obtaining a modification history for a location within a data store, the method comprising:

identifying, in a data store, a location associated with a data corruption event;

transmitting, by a computer, a request for a modification history for the identified location, the request referencing volume-level snapshot of the data store; and

receiving, by the computer in response to the transmitted request, at least one time at which at least a portion of data stored at the identified location was modified.

29. A method for requesting a modification history for a location within a data store, the method comprising:

identifying, in a data store, a location associated with a data corruption event;

determining an address range that corresponds to the identified location;

generating a data packet containing the address range and an operation code requesting a modification history for the address range; and

transmitting the data packet to a storage management device coupled to the data store.

30. The method of claim 29, wherein the operation code requests at least one time at which at least a portion of data stored at the address range was modified.

31-34. -34. (canceled)

35. A method for providing a modification history for a location within a data store, the method comprising:

receiving, by a storage management device, a request for a modification history for a location within a data store;

determining, by the storage management device, at least one time from which all data stored at the location was modified; and

transmitting, by the storage management device in response to the received request, the at least one determined time.

36. The method of claim 35, wherein at least one portion of the data stored at the location was modified at a different time from the at least one determined time.