CA2596434A1 - File system having variable logical storage block size - Google Patents

File system having variable logical storage block size Download PDF

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Publication number
CA2596434A1
CA2596434A1 CA002596434A CA2596434A CA2596434A1 CA 2596434 A1 CA2596434 A1 CA 2596434A1 CA 002596434 A CA002596434 A CA 002596434A CA 2596434 A CA2596434 A CA 2596434A CA 2596434 A1 CA2596434 A1 CA 2596434A1
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CA
Canada
Prior art keywords
data
executable
file
storage device
block size
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002596434A
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French (fr)
Other versions
CA2596434C (en
Inventor
Dan Dodge
Peter Van Der Veen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BlackBerry Ltd
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QNX Software Systems GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by QNX Software Systems GmbH filed Critical QNX Software Systems GmbH
Publication of CA2596434A1 publication Critical patent/CA2596434A1/en
Application granted granted Critical
Publication of CA2596434C publication Critical patent/CA2596434C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0638—Organizing or formatting or addressing of data
    • G06F3/0643—Management of files
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/04—Addressing variable-length words or parts of words
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/0608—Saving storage space on storage systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/061—Improving I/O performance
    • G06F3/0613—Improving I/O performance in relation to throughput
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
    • G06F3/0671—In-line storage system
    • G06F3/0683—Plurality of storage devices
    • G06F3/0685—Hybrid storage combining heterogeneous device types, e.g. hierarchical storage, hybrid arrays
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
    • G06F12/023—Free address space management
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S707/00—Data processing: database and file management or data structures
    • Y10S707/99951—File or database maintenance
    • Y10S707/99952—Coherency, e.g. same view to multiple users
    • Y10S707/99953—Recoverability
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S707/00—Data processing: database and file management or data structures
    • Y10S707/99951—File or database maintenance
    • Y10S707/99956—File allocation

Abstract

A system is set forth that includes a processor, a data storage device that accessible by the processor, and filesystem software that executable by the processor to organize files on the data storage device. The filesystem software is executable to organize files on the data storage device in storage areas having different logical storage block sizes that are dependent on file type. In one implementation, the filesystem software is executable to generate a hole map associated with the data storage device. The hole map comprises data indicative of a logical storage block size for each of a plurality of storage areas of the data storage device and, optionally, data indicative of a degree of usage for each of the plurality of storage areas. The filesystem may identify the file type using a filename of the file and/or embedded file information.

Claims (22)

1. A system comprising:
a processor;
a data storage device accessible by the processor;
filesystem software executable by the processor to organize files on the data storage device, where the filesystem software is executable to organize files on the data storage device in storage areas having different logical storage block sizes that are dependent on file type.
2. The system of claim 1, where the file types comprise video data files, audio data files, and executable files.
3. The system of claim 2, where the filesystem software is executable to organize video data files in larger logical storage blocks than audio data files.
4. The system of claim 3, where the filesystem software is executable to organize audio data files in larger logical storage blocks than executable files.
5. The system of claim 1, where the filesystem software is executable to generate a hole map associated with the data storage device, and where the hole map comprises data indicative of a logical storage block size for each of a plurality of storage areas of the data storage device.
6. The system of claim 5, where the filesystem software is executable to generate proximate a beginning portion of a volume on the data storage device.
7. The system of claim 5, where the filesystem software is executable to store data indicative of a degree of usage of mapped storage areas of the storage device in the hole map.
8. The system of claim 1, where the filesystem software is executable to identify the file type of a file using a filename of the file.
9. The system of claim 1, where the filesystem software is executable to identify the file type of a file using embedded file information.
10. The system of claim 1, where the filesystem software is executable to store file data in an area of a lesser logical storage block size when an area of a logical storage block size corresponding to the file type is unavailable.
11. The system of claim 1, where the filesystem software is executable to store file data in a degraded area of the memory storage when an area of a logical storage block size corresponding to the file type is unavailable.
12. A system comprising:
a processor;
a data storage device accessible by the processor;
filesystem software executable by the processor to organize files on the data storage device, where the filesystem software is executable to organize files on the data storage device using a first area type having a first logical storage block size and a second area type having a second logical storage block size that differs from the first logical storage block size, and where the filesystem software is further executable to store file data of a first file type in storage areas of the first area type and file data of a second file type in storage areas of the second area type.
13. The system of claim 12, where the first file type comprises video data files and the second file type comprises audio data files.
14. The system of claim 13, where the first logical storage block size is larger than the second logical storage block size.
15. The system of claim 12, where the filesystem software is executable to generate a hole map corresponding to storage areas of the data storage device, where the hole map comprises data indicative of whether an area is of the first or second area type.
16. The system of claim 15, where the hole map generated through execution of the filesystem software is stored proximate a beginning of a volume on the data storage device.
17. The system of claim 15, where the hole map comprises data indicative of a degree of usage of the storage areas of the storage device that are mapped in the hole map.
18. The system of claim 12, where the filesystem software is executable to identify the file type of a file using a filename of the file.
19. The system of claim 12, where the filesystem software is executable to identify the file type of a file using embedded file information.
20. A data storage device comprising:
a plurality of equal sized storage areas;
a hole map having data identifying a logical storage block size associated with each of the plurality of equal sized storage areas, where at least two of the plurality of equal sized storage areas have different logical storage block sizes.
21. The data storage device of claim 20, where the logical storage block size associated with a given storage area of the plurality of equal sized storage areas is dependent on a file type of the data stored in the given storage area.
22. A data storage device comprising:
filesystem software executable by the processor to organize files on the data storage device;
a first storage area storing data of a first file type and having a first logical storage block size; and a second storage area having a second logical storage block size that differs from the first logical storage block size, where data of a second file type is stored in the second storage area.
CA2596434A 2006-08-25 2007-08-08 File system having variable logical storage block size Active CA2596434C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/510174 2006-08-25
US11/510,174 US7599972B2 (en) 2006-08-25 2006-08-25 File system having variable logical storage block size

Publications (2)

Publication Number Publication Date
CA2596434A1 true CA2596434A1 (en) 2008-02-25
CA2596434C CA2596434C (en) 2012-07-24

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Family Applications (1)

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CA2596434A Active CA2596434C (en) 2006-08-25 2007-08-08 File system having variable logical storage block size

Country Status (6)

Country Link
US (1) US7599972B2 (en)
EP (1) EP1895394B1 (en)
JP (1) JP2008052730A (en)
KR (1) KR20080018801A (en)
CN (1) CN101131672A (en)
CA (1) CA2596434C (en)

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Also Published As

Publication number Publication date
US7599972B2 (en) 2009-10-06
CN101131672A (en) 2008-02-27
US20080052329A1 (en) 2008-02-28
EP1895394B1 (en) 2018-05-30
CA2596434C (en) 2012-07-24
KR20080018801A (en) 2008-02-28
EP1895394A3 (en) 2009-08-12
EP1895394A2 (en) 2008-03-05
JP2008052730A (en) 2008-03-06

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