Consumer Share Quota Feature

• US 20100174745A1
• Filed: 01/06/2009
• Published: 07/08/2010
• Est. Priority Date: 01/06/2009
• Status: Active Grant

• Current Assignee: LenovoEMC Limited (Lenovo Group Ltd.)
• Original Assignee: LenovoEMC Limited (Lenovo Group Ltd.)
• Inventors: Ryan, Michael, Gruttadauria, Brian, Frank, Joseph, Foster, Brian
• Granted Patent: US 8,402,051 B2
• Time in Patent Office: Days
• US Class Current: 707/770
• CPC Class Codes: G06F 3/0608 Saving storage space on storage systems
• CPC Class Codes: G06F 3/0631 by allocating resources to storage systems
• CPC Class Codes: G06F 3/0637 Permissions
• CPC Class Codes: G06F 3/0643 Management of files
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]

Abstract

Disclosed herein is a system and method that that allows device administrators to set disk quotas for each share of a server. Quotas are set and enforced per share. The quota specifies the total disk space the share may consume on the device. When a share reaches or exceeds the set quota the share can no longer be written to.

Claims

1. A system for implementing share-based quotas on a Unix-like file server comprising:

a first file system comprising a share; and

a quota module comprising;

a FUSE device configured to write a FUSE virtual file system,

wherein the share has a size quota and the quota module monitors the share.

2. The system according to claim 1, wherein the quota module monitors the share by calculating the share size at intervals.

3. The system according to claim 2, wherein the share size is further based on share usage.

4. The system according to claim 1, wherein the quota module determines that the share has reached its quota.

5. The system according to claim 4, wherein the FUSE device writes a FUSE virtual file system and the quota module moves the share from the first file system to the FUSE virtual file system.

6. The system according to claim 5, wherein the FUSE virtual file system allows requests for reads and deletions to the share.

7. The system according to claim 5, wherein the FUSE virtual file system denies requests for writes to the share.

8. The system according to claim 1, wherein the quota module determines that the share has exceeded its quota.

9. The system according to claim 8, wherein the FUSE device writes a FUSE virtual file system and the quota module moves the share from the first file system to the FUSE virtual file system.

10. The system according to claim 9, wherein the FUSE virtual file system allows requests for reads and deletions to the share.

11. The system according to claim 9, wherein the FUSE virtual file system denies requests for writes to the share.

12. The system according to claim 1, wherein the Unix-like file server is a Linux file server.

13. A method for implementing share-based quotas on a Unix-like file server comprising:

determining a share at a first location has reached a size quota; and

moving the share to a second location,

wherein the second location is on a FUSE virtual file system and accesses to the share are received by the FUSE virtual file system.

14. The method according to claim 13, wherein the FUSE virtual file system is implemented by a FUSE device.

15. The method according to claim 13, wherein the first location is on a real file system.

16. The method according to claim 13, further comprising:

notifying users of the share that the share is unavailable when the share is being moved to the second location.

17. The method according to claim 13, further comprising:

notifying users of the share that the share is available after the share is moved to the second location.

18. The method according to claim 13, wherein the FUSE virtual file system allows requests for reads and deletions to the share.

19. The method according to claim 13, wherein the FUSE virtual file system denies requests for writes to the share.

20. The method according to claim 13, wherein the share exceeds its quota.