POSIX-COMPATIBLE FILE SYSTEM, METHOD OF CREATING A FILE LIST AND STORAGE DEVICE

• US 20160283501A1
• Filed: 10/13/2014
• Published: 09/29/2016
• Est. Priority Date: 12/17/2013
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Technology Solutions Intellectual Property GmbH (Allgeier SE)
• Inventors: Knig, Alexander, Knig, Christoph
• Application Number:
  US14/761,413
• Publication Number:
  US 20160283501A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/11 File system administration, e.g. details of archiving or snapshots file system backup G06F11/14
• CPC Class Codes: G06F 16/13 File access structures, e.g. distributed indices arrangements of input from, or output to, record carriers G06F3/06
• CPC Class Codes: G06F 16/148 File search processing

Abstract

A storage device includes at least one interface to access files stored by the storage device, and at least one mass storage system for non-volatile storage of files; wherein the storage device is configured, on receiving a write command to write a file via the at least one interface, to store metadata relating to the at least one file in an inode associated with the file of the mass storage system, and the stored metadata relating to the file include at least the file name of the file and information relating to a directory in which the file is stored.

Claims

1-16. -16. (canceled)

17. A storage device comprising:

at least one interface to access files stored by the storage device, and

at least one mass storage system for non-volatile storage of files;

wherein the storage device is configured, on receiving a write command to write a file via the at least one interface, to store metadata relating to the at least one file in an inode associated with the file of the mass storage system, and the stored metadata relating to the file comprise at least the file name of the file and information relating to a directory in which the file is stored.

18. The storage device according to claim 17, further comprising at least one software component executed by the storage device, wherein the at least one software component is configured to create a file list on the basis of the stored metadata.

19. The storage device according to claim 18, wherein the software component is configured for file management and selects files for further processing on the basis of the stored metadata.

20. The storage device according to claim 19, wherein the software component is configured to back up files on the basis of at least one time indication stored in the metadata, a modification, creation and/or backup date of the file allocated to the metadata.

21. The storage device according to claim 17, configured to store the metadata in the inodes allocated to the files of a POSIX-compatible file system of the at least one mass storage system.

22. The storage device according to claim 21, which is configured to provide at least a part of the stored metadata of a selected file comprising the filename of the file and information relating to the directory in which the file is stored, as extended attributes via the at least one interface.

23. A method of creating a file list of files of a POSIX-compatible file system comprising:

scanning a predefined group of inodes to acquire metadata of a plurality of files allocated to the inodes, wherein the metadata for each file stored in one of the inodes comprise at least the file name of respectively allocated file and information relating to a directory in which the respective file is stored;

defining file names and path specifications of files based on the metadata stored in the inodes; and

creating a file list on the basis of the defined file names and path specifications.

24. The method according to claim 23, wherein the metadata comprise at least one further attribute, or a date of a last backup of the respectively allocated file, and the at least one further attribute is transferred into the file list and/or a transfer of a file into the file list is decided on the basis of the at least one further attribute.

25. The method according to claim 24, wherein

in the step of scanning the predefined list of inodes, a check is carried out to determine whether the metadata of an inode satisfy at least one predefined condition;

and

in the step of creating the file list, an entry is created for a file allocated to an inode only if the predefined condition for the metadata of the respective inode is satisfied.

26. A mass storage system comprising a POSIX-compatible file system comprising at least one directory and a plurality of files stored in the directory, wherein

an inode with metadata relating to the respective file is allocated to each file;

the directory comprises an allocation between file names of the plurality of files and the inode respectively allocated to a file; and

the metadata relating to the respective file comprise at least the file name of the allocated file and information relating to the at least one directory.

27. The mass storage system according to claim 26, wherein the information relating to the at least one directory comprises a reference to an inode allocated to the directory.

28. The mass storage system according to claim 26, wherein the file system is a WORM file system and the information relating to the at least one directory comprises a path specification of the allocated file from a predefined reference point or a mountpoint of the WORM file system.

29. The mass storage system according to claim 28, wherein the metadata relating to the respective file comprise a full path specification with a path specification to the directory in which the file is stored, and the filename itself.

30. The mass storage system according to claim 26, wherein the metadata relating to the file additionally comprise a reference to an inode allocated to a predefined reference point or a mountpoint, of the file system.

31. The mass storage system according to claim 26, wherein the filename and information relating to the at least one directory are stored in an extended attribute of the file system.