Concurrent file and object protocol access using space-efficient cloning

• US 9,413,826 B1
• Filed: 01/11/2016
• Issued: 08/09/2016
• Est. Priority Date: 01/11/2016
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Wolafka, Rainer, Dietz, Mathias, Hildebrand, Dean, Lorenz, Simon, Nelson, Brian, Owen, William W.
• Primary Examiner(s): Nguyen, Cam-Linh
• Application Number:
  US14/992,983
• Time in Patent Office: 211 Days
• Field of Search: 707/626, 707/639, 707/827
• US Class Current: 1/1
• CPC Class Codes: G06F 16/162 Delete operations erasing in storage systems G06F3/0652
• CPC Class Codes: G06F 16/178 Techniques for file synchronisation in file systems
• CPC Class Codes: G06F 16/1824 implemented using Network-attached Storage [NAS] architecture distributed or networked storage systems G06F3/067; protocols for distributed storage of data in a network H04L67/1097
• CPC Class Codes: G06F 16/1844 Management specifically adapted to replicated file systems
• CPC Class Codes: G06F 16/196 Specific adaptations of the file system to access devices and non-file objects via standard file system access operations, e.g. pseudo file systems dedicated interfaces to storage systems G06F3/0601
• CPC Class Codes: G06F 16/23 Updating
• CPC Class Codes: G06F 16/289 Object oriented databases

Abstract

A computer-implemented method is provided for concurrent file and object protocol access. The method includes receiving a notification that indicates storage of an object by an object-based client, and creating a clone of the object. Also, the method includes providing a file-based client access to the clone of the object. Further, the method includes returning, in response to one or more read requests for the object received from one or more object-based clients while the file-based client modifies the clone of the object, the object to the one or more object-based clients. Moreover, the method includes, after the file-based client has finished modifying the clone of the object, replacing the object with an updated object based on the modified clone of the object.

Claims

1. A computer program product for providing concurrent file and object protocol access, the computer program product comprising a computer readable storage medium having computer readable program code embodied therewith, the computer readable program code comprising:

computer readable program code configured to receive a notification that indicates storage of an object by an object-based client;

computer readable program code configured to create a clone of the object;

computer readable program code configured to provide a file-based client access to the clone of the object;

computer readable program code configured to return, in response to one or more read requests for the object received from one or more object-based clients while the file-based client modifies the clone of the object, the object to the one or more object-based clients;

computer readable program code configured to, after the file-based client has finished modifying the clone of the object, replace the object with an updated object based on the modified clone of the object;

computer readable program code configured to provide the file-based client access to the modified clone of the object; and

computer readable program code configured to, after the file-based client has finished modifying the modified clone of the object;

based on the modification of the modified clone by the file-based client, generate an additional clone of the object, and

replace the updated object with an additional object based on the additional clone of the object;

wherein each of the clone, the modified clone, and the additional clone are separately and simultaneously stored.

2. The computer program product of claim 1, comprising computer readable program code configured to return, in response to one or more read requests for the object received from the one or more object-based clients after the file-based client has finished modifying the clone of the object, the updated object to the one or more object-based clients.

3. The computer program product of claim 1, comprising computer readable program code configured to create a second clone of the updated object.

4. The computer program product of claim 3, comprising computer readable program code configured to, in response to creating the second clone of the updated object, remove the clone of the object.

5. The computer program product of claim 4, comprising computer readable program code configured to, after creating the second clone of the updated object, delete the object.

6. The computer program product of claim 1, comprising computer readable program code configured to return, in response to one or more read requests for the object received from one or more object-based clients while the file-based client modifies the modified clone of the object to generate the additional clone, the updated object to the one or more object-based clients.

7. The computer program product of claim 1, comprising computer readable program code configured to de-clone the clone, the modified clone, and the additional clone when a predetermined number of clones are associated with the object.

8. The computer program product of claim 1, wherein the clone of the object is created in response to the notification indicating the storage of the object by the object-based client.

9. The computer program product of claim 1, wherein the clone of the object is created in response to a request to access the object by the file-based client.

10. A computer-implemented method for providing concurrent file and object protocol access, the method comprising:

receiving a notification that indicates storage of an object by an object-based client;

creating a clone of the object;

providing a file-based client access to the clone of the object;

returning, in response to one or more read requests for the object received from one or more object-based clients while the file-based client modifies the clone of the object, the object to the one or more object-based clients;

after the file-based client has finished modifying the clone of the object, replacing the object with an updated object based on the modified clone of the object;

providing the file-based client access to the modified clone of the object; and

after the file-based client has finished modifying the modified clone of the object;

based on the modification of the modified clone by the file-based client, generating an additional clone of the object, and

replacing the updated object with an additional object based on the additional clone of the object,

wherein each of the clone, the modified clone, and the additional clone are separately and simultaneously stored.

11. The computer-implemented method of claim 10, comprising returning, in response to one or more read requests for the object received from the one or more object-based clients after the file-based client has finished modifying the clone of the object, the updated object to the one or more object-based clients.

12. The computer-implemented method of claim 10, comprising creating a second clone of the updated object.

13. The computer-implemented method of claim 12, comprising, in response to creating the second clone of the updated object, removing the clone of the object.

14. The computer-implemented method of claim 13, comprising, after creating the second clone of the updated object, deleting the object.

15. The computer-implemented method of claim 10, comprising returning, in response to one or more read requests for the object received from one or more object-based clients while the file-based client modifies the modified clone of the object to generate the additional clone, the updated object to the one or more object-based clients.

16. The computer-implemented method of claim 10, comprising de-cloning the clone, the modified clone, and the additional clone when a predetermined number of clones are associated with the object.

17. The computer-implemented method of claim 10, wherein the clone of the object is created in response to the notification indicating the storage of the object by the object-based client.

18. A system, comprising:

a processor and logic integrated with and/or executable by the processor, the logic being configured to;

receive a notification that indicates storage of an object by an object-based client;

create a clone of the object;

provide a file-based client access to the clone of the object;

return, in response to one or more read requests for the object received from one or more object-based clients while the file-based client modifies the clone of the object, the object to the one or more object-based clients;

after the file-based client has finished modifying the clone of the object, replace the object with an updated object based on the modified clone of the object;

providing the file-based client access to the modified clone of the object; and

after the file-based client has finished modifying the modified clone of the object;

based on the modification of the modified clone by the file-based client, generating an additional clone of the object, and

replacing the updated object with an additional object based on the additional clone of the object,

wherein each of the clone, the modified clone, and the additional clone are separately and simultaneously stored.