Patent Application

App. No. 16/886,534

Abstract

Claims (85)

1 . A method for managing a persistent storage system, the method comprising:

obtaining, by a backup agent, a backup request for an incremental backup of a file system; and

in response to the backup request:

selecting a reference backup from a backup storage system;

obtaining a first hash value document associated with the reference backup;

generating a hash value for an asset associated with the file system;

making a first determination that the hash value matches a second hash value specified in the first hash value document;

in response to the first determination, populating an incremental backup with a copy of data associated with the asset;

initiating a transfer of the incremental backup to the backup storage system; and

storing a second hash value document, wherein the second hash value document comprises the hash value and a backup identifier of the incremental backup.

2 . The method of claim 1 , further comprising:

prior to initiating the transfer of the incremental backup to the backup storage system:

generating a third hash value for a second asset associated with the file system;

making a second determination that the third hash value does not match a fourth hash value; and

in response to the second determination, not populating the incremental backup with a second copy of second data associated with the second asset.

3 . The method of claim 2 , wherein the second hash value document further comprises the third hash value.

4 . The method of claim 1 , wherein the first hash value document comprises a timestamp associated with the reference backup, a second backup identifier associated with the reference backup, and a plurality of hash values.

5 . The method of claim 1 , wherein the reference backup is not a most recent backup of the file system.

6 . The method of claim 1 , wherein the asset is a file in the file system.

7 . The method of claim 1 , further comprising:

obtaining a second backup request for an incremental block-based backup; and

in response to the second backup request:

identifying a plurality of data blocks changed since a most recent block-based backup;

performing a data block file analysis on the plurality of data blocks to identify a plurality of modified files;

generating the incremental block-based backup using the plurality of data blocks;

generating a file change document based on the plurality of modified files;

updating the incremental block-based backup based on the file change document; and

initiating a transfer of the incremental block-based backup to the backup storage system.

8 . A system, comprising:

a processor; and

memory comprising instructions which, when executed by the processor, perform a method, the method comprising:

obtaining, by a backup agent, a backup request for an incremental backup of a file system; and

in response to the backup request:

selecting a reference backup from a backup storage system;

obtaining a first hash value document associated with the reference backup;

generating a hash value for an asset associated with the file system;

making a first determination that the hash value matches a second hash value specified in the first hash value document;

in response to the first determination, populating an incremental backup with a copy of data associated with the asset;

initiating a transfer of the incremental backup to the backup storage system; and

storing a second hash value document, wherein the second hash value document specifies the hash value and a backup identifier of the incremental backup.

9 . The system of claim 8 , the method further comprising:

prior to initiating the transfer of the incremental backup to the backup storage system:

generating a third hash value for a second asset associated with the file system;

making a second determination that the third hash value does not match a fourth hash value; and

in response to the second determination, not populating the incremental backup with a second copy of second data associated with the second asset.

10 . The system of claim 9 , wherein the second hash value document further comprises the third hash value.

11 . The system of claim 8 , wherein the first hash value document comprises a time stamp associated with the reference backup, a second backup identifier associated with the reference backup, and a plurality of hash values.

12 . The system of claim 8 , wherein the reference backup is not a most recent backup of the file system.

13 . The system of claim 8 , wherein the asset is a file in the file system.

14 . The system of claim 8 , the method further comprising:

obtaining a second backup request for an incremental block-based backup; and

in response to the second backup request:

identifying a plurality of data blocks changed since a most recent block-based backup;

performing a data block file analysis on the plurality of data blocks to identify a plurality of modified files;

generating the incremental block-based backup using the plurality of data blocks;

generating a file change document based on the plurality of modified files;

updating the incremental block-based backup based on the file change document; and

initiating a transfer of the incremental block-based backup to the backup storage system.

15 . A non-transitory computer readable medium comprising computer readable program code, which when executed by a computer processor enables the computer processor to perform a method for performing a backup operation, the method comprising:

obtaining, by a backup agent, a backup request for an incremental backup of a file system; and

in response to the backup request:

selecting a reference backup from a backup storage system;

obtaining a first hash value document associated with the reference backup;

generating a hash value for an asset associated with the file system;

making a first determination that the hash value matches a second hash value specified in the first hash value document;

in response to the first determination, populating an incremental backup with a copy of data associated with the asset;

initiating a transfer of the incremental backup to the backup storage system; and

storing a second hash value document, wherein the second hash value document comprises the hash value and a backup identifier of the incremental backup.

16 . The non-transitory computer readable medium of claim 15 , the method further comprising:

prior to initiating the transfer of the incremental backup to the backup storage system:

generating a third hash value for a second asset associated with the file system;

making a second determination that the third hash value does not match a fourth hash value; and

in response to the second determination, not populating the incremental backup with a second copy of second data associated with the second asset.

17 . The non-transitory computer readable medium of claim 16 , wherein the second hash value document further comprises the third hash value.

18 . The non-transitory computer readable medium of claim 15 , wherein the first hash value document comprises a timestamp associated with the reference backup, a second backup identifier associated with the reference backup, and a plurality of hash values.

19 . The non-transitory computer readable medium of claim 15 , wherein the reference backup is not a most recent backup of the file system.

20 . The non-transitory computer readable medium of claim 15 , the method further comprising:

obtaining a second backup request for an incremental block-based backup; and

in response to the second backup request:

identifying a plurality of data blocks changed since a most recent block-based backup;

performing a data block file analysis on the plurality of data blocks to identify a plurality of modified files;

generating the incremental block-based backup based on the plurality of data blocks;

generating a file change document based on the plurality of modified files;

updating the incremental block-based backup based on the file change document; and

initiating a transfer of the incremental block-based backup to the backup storage system.

Assignments (9)