System and method for distributed discovery and management of frozen images in a storage environment

• US 7,366,742 B1
• Filed: 09/10/2004
• Issued: 04/29/2008
• Est. Priority Date: 09/10/2004
• Status: Active Grant

• Current Assignee: Veritas Technologies, LLC (Whitehouse Group Ltd.)
• Original Assignee: Symantec Operating Corporation (NortonLifeLock Inc.)
• Inventors: Noonan, Terence W., Philips, Gary, Asgaonkar, Shishir, Murphy, Elliot J., Chaudhari, Shailesh, Naftel, Tim, Lanzatella, Thomas W., Umbehocker, Steven, Clowser, Kirk W.
• Primary Examiner(s): Rimell; Sam
• Assistant Examiner(s): Lewis; Alicia M
• Application Number:
  US10/938,037
• Time in Patent Office: 1,327 Days
• Field of Search: 707/101, 707/200, 707/202, 707/203, 707/204
• US Class Current: 1/1
• CPC Class Codes: G06F 11/1435 using file system or storage system metadata
• CPC Class Codes: G06F 11/1662 the resynchronized component or unit being a persistent storage device re-synchronization of failed mirror storage G06F11/2082; rebuild or reconstruction of parity RAID storage G06F11/1008
• CPC Class Codes: G06F 11/2046 where the redundant components share persistent storage G06F11/2043 takes precedence
• CPC Class Codes: G06F 2201/84 Using snapshots, i.e. a logical point-in-time copy of the data

Abstract

A system for distributed discovery and management of frozen images includes a first and a second computer host, a first and a second frozen image agent and a frozen image server. Each of the first and second frozen image agents may be configured to identify one or more storage hierarchies hosted at a respective computer host, and to provide an encoding representing the identified storage hierarchies to the frozen image server. The frozen image server may be configured to aggregate the encodings provided by the frozen image agents into a system-level storage hierarchy catalog.

Claims

1. A system comprising:

a server system comprising a processor and memory, wherein the server system is configured to receive a plurality of encodings from a plurality of different host computers, wherein each of said plurality of encodings was received from a corresponding host computer, and wherein each of said plurality of encodings describes;

the structure of at least two storage hierarchies on said corresponding host computer, wherein each storage hierarchy comprises a file system and/or storage volume; and

one or more relationships between said at least two storage hierarchies;

wherein said server system is configured to store said received plurality of encodings in a storage hierarchy catalog, and wherein said storage hierarchy catalog includes a first encoding corresponding to a first plurality of storage hierarchies on a first host computer; and

wherein said server system is configured to use said stored first encoding to respond to a first request to create and store a first frozen image of at least one of said first plurality of storage hierarchies, wherein said first frozen image is a logical copy of data within said at least one of said first plurality of storage hierarchies, and wherein said first frozen image includes information indicative of the one or more relationships described by said first encoding.

2. The system of claim 1, wherein said server system is configured to respond to said first request to create the first frozen image by sending a second request to the first host computer to create the first frozen image, wherein said second request specifies a target location for the first frozen image.

3. The system of claim 1, wherein said server system is configured to display at least a portion of the storage hierarchy catalog, including at least a portion of a representation of the first frozen image on a display device.

4. The system of claim 1, wherein each of said first plurality of storage hierarchies includes information describing the logical and physical structure of at least a portion of a corresponding storage volume.

5. The system of claim 1, further including the first host computer, wherein said first host computer is configured to:

identify the first plurality of storage hierarchies configured on the first host computer, wherein the first plurality of storage hierarchies includes a first storage hierarchy and a second storage hierarchy;

create the first encoding, wherein the first encoding includes information indicative of a first relationship between the first storage hierarchy and the second storage hierarchy; and

send the first encoding to the server system.

6. The system of claim 2, wherein the first host computer is configured to:

receive the second request to create the first frozen image; and

create the first frozen image.

7. The system of claim 6, wherein the server system is configured to monitor sub-tasks associated with creating the first frozen image.

8. The system of claim 6, wherein said first host computer is configured to create the first frozen image using a hardware snapshot.

9. The system of claim 6, wherein said first host computer is configured to create the first frozen image using a copy-on-write snapshot.

10. The system of claim 6, wherein said first host computer is configured to create the first frozen image using a file system cloning operation.

11. The system of claim 6, wherein said first host computer is configured to create the first frozen image using a logical volume snapshot.

12. The system of claim 1, wherein the first plurality of storage hierarchies includes a first storage hierarchy and a second storage hierarchy, wherein the first encoding includes information indicative of a first relationship between the first storage hierarchy and the second storage hierarchy.

13. The system of claim 12, wherein said first relationship is a logical parent-child relationship between said first storage hierarchy and said second storage hierarchy.

14. The system of claim 12, wherein the first encoding includes information indicative of a second relationship established by cloning file system storage nodes.

15. The system of claim 12, wherein the first encoding includes information indicative of a second relationship established by providing shared access to one or more applications.

16. A computer-accessible storage medium, including program instructions executable to:

receive a plurality of encodings from a plurality of different host computers, wherein each of said plurality of encodings was received from a corresponding host computer, and wherein each of said plurality of encodings describes;

the structure of at least two storage hierarchies on said corresponding host computer, wherein each storage hierarchy comprises a file system and/or storage volume; and

one or more relationships between said at least two storage hierarchies;

store said received plurality of encodings in a storage hierarchy catalog, wherein said storage hierarchy catalog includes a first encoding corresponding to a first plurality of storage hierarchies on a first host computer; and

use said stored first encoding to respond to a first request to create and store a first frozen image of at least one of said first plurality of storage hierarchies, wherein said first frozen image is a logical copy of data within said at least one of said first plurality of storage hierarchies, and wherein said first frozen image includes information indicative of one or more relationships described by said first encoding.

17. The storage medium of claim 16, wherein the program instructions are further executable to respond to said first request to create the first frozen image by sending a second request to the first host computer to create the first frozen image, wherein said second request specifies a target location for the first frozen image.

18. The storage medium of claim 16, wherein the program instructions are further executable to display at least a portion of the storage hierarchy catalog, including at least a portion of a representation of the first frozen image on a display device.

19. The storage medium of claim 16, wherein each of said first plurality of storage hierarchies includes information describing the logical and physical structure of at least a portion of a corresponding storage volume.

20. The storage medium of claim 16, wherein the first plurality of storage hierarchies includes a first storage hierarchy and a second storage hierarchy, wherein the first encoding includes information indicative of a first relationship between the first storage hierarchy and the second storage hierarchy.

21. The storage medium of claim 20, wherein said first relationship is a logical parent-child relationship between said first storage hierarchy and said second storage hierarchy.

22. The storage medium of claim 20, wherein the first encoding includes information indicative of a second relationship established by cloning file system storage nodes.

23. The storage medium of claim 20, wherein the first encoding includes information indicative of a second relationship established by providing shared access to one or more applications.