Preserving redundancy in data deduplication systems by indicator
First Claim
Patent Images
1. A method for preserving data redundancy in a data deduplication system in a computing environment by a processor, comprising:
- receiving a write command for writing a selected data segment to a physical storage location, wherein the selected data segment is at least one of a Superblock and file system metadata required to be stored repetitively on physical storage;
determining whether the write command includes an indicator including at least one of a bit and a flag, the indicator designating that the selected data segment must not be subject to a deduplication operation;
if the write command does not include the indicator, generating a fingerprint for the selected data segment and performing a deduplication operation on the selected data segment; and
if the write command does include the indicator, bypassing the generating the fingerprint and the performing the deduplication operation;
wherein configuring an indicator further includes, for an application operational in the computing environment, providing a system call with an extended attribute indicating that the selected data segment must be written to physical memory notwithstanding the selected data segment matching data written to the physical memory earlier in time.
1 Assignment
0 Petitions
Accused Products
Abstract
Various embodiments for preserving data redundancy in a data deduplication system in a computing environment are provided. In one embodiment, a method for such preservation is disclosed. An indicator is configured. The indicator is provided with a selected data segment to be written through the data deduplication system to designate that the selected data segment must not be subject to a deduplication operation, such that repetitive data can be written and stored on physical locations despite being identical.
-
Citations
4 Claims
-
1. A method for preserving data redundancy in a data deduplication system in a computing environment by a processor, comprising:
-
receiving a write command for writing a selected data segment to a physical storage location, wherein the selected data segment is at least one of a Superblock and file system metadata required to be stored repetitively on physical storage; determining whether the write command includes an indicator including at least one of a bit and a flag, the indicator designating that the selected data segment must not be subject to a deduplication operation; if the write command does not include the indicator, generating a fingerprint for the selected data segment and performing a deduplication operation on the selected data segment; and if the write command does include the indicator, bypassing the generating the fingerprint and the performing the deduplication operation; wherein configuring an indicator further includes, for an application operational in the computing environment, providing a system call with an extended attribute indicating that the selected data segment must be written to physical memory notwithstanding the selected data segment matching data written to the physical memory earlier in time. - View Dependent Claims (2, 3, 4)
-
Specification