STORAGE VIRTUALIZATION

• US 20120005307A1
• Filed: 06/30/2010
• Published: 01/05/2012
• Est. Priority Date: 06/30/2010
• Status: Abandoned Application

• Current Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Original Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Inventors: Das, Abhik, Mopur, Satish Kumar, Badrinath, Ramamurthy
• Application Number:
  US12/827,028
• Publication Number:
  US 20120005307A1
• Time in Patent Office: Days
• US Class Current: 709/219
• CPC Class Codes: G06F 16/1727 Details of free space management performed by the file system saving storage space on storage systems G06F3/0608; management of blocks in storage devices G06F3/064

Abstract

A method of providing access to a plurality of different file systems implemented across a plurality of storage spaces comprises receiving a request for at least one storage space. The method further comprises receiving a request for at least one storage space and processing the request based at least in part on one of a location metadata and a file metadata, the location metadata including attributes associated with the plurality of storage spaces and the file metadata including attributes associated with one or more files stored at the plurality of storage spaces.

Claims

1. A method of providing access to a plurality of different file systems implemented across a plurality of storage spaces, the method comprising:

receiving a request for at least one storage space; and

processing the request based at least in part on one of a location metadata and a file metadata, the location metadata including attributes associated with the plurality of storage spaces and the file metadata including attributes associated with one or more files stored at the plurality of storage spaces.

2. The method as claimed in claim 1, the method further comprising updating the location metadata and the file metadata based on the processing.

3. The method as claimed in claim 1, the method further comprising:

determining attributes associated with a file selected from amongst the files, in response to receiving a request for rearranging the files stored at the plurality of storage spaces; and

moving the selected file to a new location within the plurality of storage spaces, the new location determined based at least in part on the attributes of selected file.

4. The method as claimed in claim 3, wherein the determining further comprises:

comparing the size of the selected file and an available space at the new location; and

selecting another new location on determining the size of the selected file to be greater than the available space at the new location.

5. The method as claimed in claim 3, the moving further comprises deleting the selected file from an existing location corresponding to the selected file.

6. A device for storage virtualization, the device comprising:

a processor; and

a memory coupled to the processor, the memory comprising,

a virtual storage space configured to provide a common interface for two or more different file systems, the two or more different file systems being implemented at one or more storage spaces; and

a local filter configured to manage input/output (I/O) requests received via the common interface.

7. The device as claimed in claim 6, wherein the local filter is configured to:

obtain at least one attribute associated with a file stored in the one or more storage spaces;

determine a download location based at least in part on the at least one attribute; and

download the file from the download location.

8. The device as claimed in claim 7, wherein the local filter is further configured to make modifications to the file downloaded from the download location.

9. The device as claimed in claim 8, wherein the local filter is further configured to:

determine an upload location for the file downloaded from the download location based at least in part on the at least one attribute; and

upload the file downloaded from the download location, after making modifications, to the upload location.

10. The device as claimed in claim 9, wherein the local filter is further configured to:

compare a size of the file downloaded from the download location with a space available at the upload location;

delete the file downloaded from the download location, if the size of the file downloaded from the download location is greater than the space available at the upload location.

11. A computer-readable medium having computer-executable instructions which when executed perform acts comprising:

processing at least one input/output (I/O) request received via a common interface associated with a plurality of different file systems implemented at a plurality of storage spaces;

selecting a storage space corresponding to the I/O request from the plurality of storage spaces; and

directing the at least one I/O request to the selected storage space based at least on a file metadata and a location metadata.

12. The computer-readable medium as claimed in claim 11, further comprising instructions for:

determining an upload location where a file is to be uploaded based on a maximum space available at least at one of the plurality of storage spaces; and

uploading the file to the upload location.

13. The computer-readable medium of claim 12, wherein the determining further comprises comparing a size of the file and the maximum space available at the at least one of the plurality of storage spaces.

14. The computer-readable medium of claim 13, further comprising instructions for generating an error indication if the size of the file exceeds the maximum space available at the at least one of the plurality of storage spaces.

15. The computer-readable medium of claim 12, further comprising instructions for updating the file metadata and the location metadata based on the uploading.