Systems and methods for write-once-read-many storage

Patent metadata

Field	Value
Publication number	US-10860544-B2
Application number	US-201715719502-A
Country	US
Kind code	B2
Filing date	Sep 28, 2017
Priority date	Jul 31, 2017
Publication date	Dec 8, 2020
Grant date	Dec 8, 2020

Abstract

The disclosed computer-implemented method for write-once-read-many storage may include (1) receiving, at a file system on the computing device, a request to assign a write-once-read-many (WORM) attribute to a file, wherein the request is received from an application, (2) setting, in response to the request to assign the WORM attribute to the file, a WORM flag in an extended attribute associated with the file, and (3) associating with the file, in response to the setting of the WORM flag, a retention period attribute and read-only access until the end of the retention period. The provided systems and methods may provide per-file WORM support at a file system level using extended attributes of the file system. Various other methods, systems, and computer-readable media are also disclosed.

First claim

What is claimed is:

1. A computer-implemented method for write-once-read-many storage, at least a portion of the method being performed by a computing device comprising at least one processor, the method comprising:
receiving, at a file system on the computing device, a request to assign a write-once-read-many (WORM) attribute to a file, wherein the request is received from an application;
setting, in response to the request to assign the WORM attribute to the file, a WORM flag in an extended attribute associated with the file, wherein the extended attribute is file-system defined and enables per-file customized file management capabilities beyond those provided by a basic file system while not altering or interfering with basic file system attributes; and
associating with the file, in response to the setting of the WORM flag, a retention period attribute and read-only access until the end of the retention period.

2. The method of claim 1 , wherein the extended attribute associated with the file includes:
an additional WORM-related attribute; and
data indicating a length of the retention period.

3. The method of claim 1 , further comprising receiving, at the file system and from the application, an assignment of the retention period attribute associated with the file.

4. The method of claim 1 , further comprising setting the retention period attribute associated with the file in response to at least one of a retention policy and a retention attribute of a parent directory of the file.

5. The method of claim 1 , further comprising receiving, at the file system and from the application, an assignment of at least one of:
an append-only attribute associated with the file;
an automatic deletion attribute associated with the file;
an immutability attribute associated with the file; and
a secure deletion attribute associated with the file.

6. The method of claim 1 , further comprising enforcing the retention period and the read-only access to the file against all users.

7. The method of claim 1 , further comprising:
receiving a request to read the file, wherein the request conforms with a common internet file system protocol; and
enabling, in response to the request to read the file, reading the file.

8. The computer-implemented method of claim 1 , further comprising performing at least one security action in response to setting the WORM flag.

9. A system for write-once-read-many storage, the system comprising:
a memory device;
a receiving module, stored in the memory device, that receives, at a file system on the computing device, a request to assign a write-once-read-many (WORM) attribute to a file, wherein the request is received from an application;
a setting module, stored in the memory device, that sets, in response to the request to assign the WORM attribute to the file, a WORM flag in an extended attribute associated with the file, wherein the extended attribute is file-system defined and enables per-file customized file management capabilities beyond those provided by a basic file system while not altering or interfering with basic file system attributes;
an associating module, stored in the memory device, that associates with the file, in response to the setting of the WORM flag, a retention period attribute and read-only access until the end of the retention period; and
at least one physical processor that executes the receiving module, the determining module, the setting module, and the associating module.

10. The system of claim 9 , wherein the extended attribute associated with the file includes:
an additional WORM-related attribute; and
data indicating a length of the retention period.

11. The system of claim 9 , further comprising a second receiving module, stored in the memory device, that receives, at the file system and from the application, an assignment of the retention period attribute associated with the file.

12. The system of claim 9 , further comprising a second setting module, stored in the memory device, that sets the retention period attribute associated with the file in response to at least one of a retention policy and a retention attribute of a parent directory of the file.

13. The system of claim 9 , further comprising a second receiving module, stored in the memory device, that receives, at the file system and from the application, an assignment of at least one of:
an append-only attribute associated with the file;
an automatic deletion attribute associated with the file;
an immutability attribute associated with the file; and
a secure deletion attribute associated with the file.

14. The system of claim 9 , further comprising an enforcing module, stored in the memory device, that enforces the retention period and the read-only access to the file against all users.

15. The system of claim 9 , further comprising:
a second receiving module, stored in the memory device, that receives a request to read the file, wherein the request conforms with a common internet file system protocol; and
an enabling module, stored in the memory device, that enables, in response to the request to read the file, reading the file.

16. The system of claim 9 , further comprising a performing module, stored in the memory device, that performs at least one security action in response to setting the WORM flag.

17. A non-transitory computer-readable medium comprising one or more computer-executable instructions that, when executed by at least one processor of a computing device, cause the computing device to:
receive, at a file system on the computing device, a request to assign a write-once-read-many (WORM) attribute to a file, wherein the request is received from an application;
set, in response to the request to assign the WORM attribute to the file, a WORM flag in an extended attribute associated with the file, wherein the extended attribute is file-system defined and enables per-file customized file management capabilities beyond those provided by a basic file system while not altering or interfering with basic file system attributes; and
associate with the file, in response to the setting of the WORM flag, a retention period attribute and read-only access until the end of the retention period.

18. The non-transitory computer-readable medium of claim 17 , wherein the extended attribute associated with the file includes:
an additional WORM-related attribute; and
data indicating a length of the retention period.

19. The non-transitory computer-readable medium of claim 17 , further comprising one or more computer-executable instructions that, when executed by the at least one processor of the computing device, cause the computing device to receive, at the file system and from the application, an assignment of the retention period attribute associated with the file.

20. The non-transitory computer-readable medium of claim 17 , further comprising one or more computer-executable instructions that, when executed by the at least one processor of the computing device, cause the computing device to set the retention period attribute associated with the file in response to at least one of a retention policy and a retention attribute of a parent directory of the file.

Assignees

• Veritas Technologies Llc

Inventors

• Mahadik Pooja
• Boyer Brad
• Banerjee Anindya

Classifications

• G06F16/125

  characterised by the use of retention policies (retention policies for HSM systems G06F16/185) · CPC title

• G06F16/13

  File access structures, e.g. distributed indices (arrangements of input from, or output to, record carriers G06F3/06) · CPC title

• G06F16/181 Primary

  providing write once read many [WORM] semantics · CPC title

• G06F16/162

  Delete operations (erasing in storage systems G06F3/0652) · CPC title