Reducing transaction operations using deferred operations

• US 9,535,926 B2
• Filed: 11/15/2013
• Issued: 01/03/2017
• Est. Priority Date: 06/26/2013
• Status: Active Grant

• Current Assignee: Red Hat, Inc. (International Business Machines Corporation)
• Original Assignee: Red Hat, Inc. (International Business Machines Corporation)
• Inventors: Avati, Anand Vishweswaran, Karampuri, Pranith Kumar
• Primary Examiner(s): Bowen, Richard
• Application Number:
  US14/081,907
• Publication Number:
  US 20150006592A1
• Time in Patent Office: 1,145 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G06F 16/1865 Transactional file systems

Abstract

A server computer system performs a first set of operations for a first transaction. The first transaction pertaining to data stored in a file system. The server computer system delays a second set of operations for the first transaction and identifies a second transaction pertaining to the data. In response to identifying the second transaction, the server computer system cancels the second set of operations for the first transaction, and cancels a first set of operations for the second transaction.

Claims

1. A method comprising:

performing a first set of operations for a first transaction, the first transaction pertaining to file system operations performed on data stored in a file system, the first set of operations for the first transaction comprising a write operation and one or more pre-write operations for the first transaction with respect to the data;

delaying, by a processing device of a server computer system, a second set of operations for the first transaction, the second set of operations for the first transaction comprising one or more post-write operations for the first transaction with respect to the data;

identifying a second transaction pertaining to the data; and

in response to identifying the second transaction, canceling the second set of operations for the first transaction, and canceling a first set of operations for the second transaction, the first set of operations for the second transaction comprising one or more pre-write operations for the second transaction with respect to the data.

2. The method of claim 1, wherein the first transaction and the second transaction correspond to a same file descriptor.

3. The method of claim 1, wherein the one or more post-write operations for the first transaction comprise:

at least one of a post-operation change log operation or an unlock operation.

4. The method of claim 1, wherein the one or more pre-write operations for the second transaction comprise:

at least one of a lock operation or a pre-operation change log operation.

5. The method of claim 1, wherein the first transaction and the second transaction overlap in time.

6. The method of claim 1, wherein canceling the second set of operations for the first transaction is performed prior to performing the second set of operations for the first transaction.

7. The method of claim 1, further comprising:

delaying a third set of operation for the first transaction;

canceling the third set of operations for the first transaction; and

canceling a second set of operations for the second transaction.

8. A non-transitory computer-readable storage medium including instructions that, when executed by a processing device, cause the processing device to perform operations comprising:

performing a first set of operations for a first transaction, the first transaction pertaining to file system operations performed on data stored in a file system, the first set of operations for the first transaction comprising a write operation and one or more pre-write operations for the first transaction with respect to the data;

delaying, by the processing device, a second set of operations for the first transaction, the second set of operations for the first transaction comprising one or more post-write operations for the first transaction with respect to the data;

identifying a second transaction pertaining to the data; and

in response to identifying the second transaction, canceling the second set of operations for the first transaction, and canceling a first set of operations for the second transaction, the first set of operations for the second transaction comprising one or more pre-write operations for the second transaction with respect to the data.

9. The non-transitory computer-readable storage medium of claim 8, wherein the first transaction and the second transaction correspond to a same file descriptor.

10. The non-transitory computer-readable storage medium of claim 8, wherein the one or more post-write operations for the first transaction comprise:

at least one of a post-operation change log operation or an unlock operation.

11. The non-transitory computer-readable storage medium of claim 8, wherein the one or more pre-write operations for the second transaction comprise:

at least one of a lock operation or a pre-operation change log operation.

12. The non-transitory computer-readable storage medium of claim 8, wherein the first transaction and the second transaction overlap in time.

13. The non-transitory computer-readable storage medium of claim 8, wherein canceling the second set of operations for the first transaction is performed prior to performing the second set of operations for the first transaction.

14. A system comprising:

a memory;

a processing device coupled to the memory to;

perform a first set of operations for a first transaction, the first transaction pertaining to file system operations performed on data stored in a file system, the first set of operations for the first transaction comprising a write operation and one or more pre-write operations for the first transaction with respect to the data;

delay a second set of operations for the first transaction, the second set of operations for the first transaction comprising one or more post-write operations for the first transaction with respect to the data;

identify a second transaction pertaining to the data; and

in response to identifying the second transaction, cancel the second set of operations for the first transaction, and cancel a first set of operations for the second transaction, the first set of operations for the second transaction comprising one or more pre-write operations for the second transaction with respect to the data.

15. The system of claim 14, wherein the first transaction and the second transaction correspond to a same file descriptor.

16. The system of claim 14, wherein the one or more post-write operations for the first transaction comprise:

at least one of a post-operation change log operation or an unlock operation.

17. The system of claim 14, wherein the one or more pre-write operations for the second transaction comprise:

at least one of a lock operation or a pre-operation change log operation.

18. The system of claim 14, wherein the first transaction and the second transaction overlap in time.

19. The system of claim 14, wherein the second set of operations for the first transaction is canceled prior to performing the second set of operations for the first transaction.

20. The system of claim 14, wherein the processing device is further to:

delay a third set of operation for the first transaction;

cancel the third set of operations for the first transaction; and

cancel a second set of operations for the second transaction.