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Ext2: History, Overview & Compression extension

ext2, or second extended file system, is a file system for the Linux kernel. It was initially designed by French software developer Rémy Card as a replacement for the extended file system (ext). Having been designed according to the same principles as the Berkeley Fast File System from BSD, it was the first commercial-grade filesystem for Linux.

Language: English [EN]
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Ext2 topic overview

The analysis highlights History, Overview and Compression extension as prominent areas in the source structure around Ext2.

Related topics
57
Source areas
6
Connected nodes
63
Extracted relationships
93
Concept neighborhoods
36
Bridge connections
63

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Overview · 25 topics
History · 16 topics
Compression extension · 7 topics
Ext2 data structures · 5 topics
File-system limits · 2 topics
Under other operating systems · 2 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Allowed filename characters
All bytes except NUL ('\0') and '/'
Bad blocks
Table
Date range
December 14, 1901 - January 18, 2038
Date resolution
1 s
Dates recorded
modification (mtime), attribute modification (ctime), access (atime)
Developer
Rémy Card

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

History

Ext2 data structures

File-system limits

Compression extension

Under other operating systems

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Ext2 connects Entity context

The extracted context around Ext2 shows recurring relationship patterns in the source. For example, Ext2 → Annual Technical Conference, Ayers, Brown, Caching Under Linux, Charles, Cite, CiteSeerX, Cong, Dave, E2compr, Internal Layout, Jeremy, John, John's, June, Larry, Linux, Linux Ext2/Ext3 Filesystem, Linux Gazette, Modern File Compression Techniques Another extracted example is Ext2 → Data, Each, The, There, These, This, Unix File System. Use these groups to spot repeated connection types before inspecting the individual relationships.

Ext2

Top relations

related to Further reading · 34
Ext2 → Annual Technical Conference, Ayers, Brown, Caching Under Linux, Charles, Cite, CiteSeerX, Cong, Dave, E2compr, Internal Layout, Jeremy, John, John's, June, Larry, Linux, Linux Ext2/Ext3 Filesystem, Linux Gazette, Modern File Compression Techniques
related to ext2 data structures · 7
Ext2 → Data, Each, The, There, These, This, Unix File System
related to File-system limits · 6
Ext2 → GiB, In Linux, Mostly, The, There, They
related to Under other operating systems · 5
Ext2 → Access, Filesystem, Installable File System, Microsoft Windows, Userspace
related to Compression extension · 4
Ext2 → Access, Directories, Linux, The
related to External links · 4
Ext2 → FreeOTFE, GPL, Windows, XP/2003/VISTA/2008
related to Allocating data · 3
Ext2 → However, If, When
related to Inodes · 3
Ext2 → Every, Example, The
Allowed filename characters · 1
Ext2 → All bytes except NUL ('\0') and '/'
Bad blocks · 1
Ext2 → Table

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

file linux system directory inode data blocks number kernel files block filesystem size extended compression new ext3 driver directories also

Ext2 relationships Subject–Predicate–Object triples

TTTA extracted 93 structured relationships around Ext2. Examples in this analysis include Ext2 → Allowed filename characters → All bytes except NUL ('\0') and '/' and Ext2 → Bad blocks → Table. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Ext2Allowed filename charactersAll bytes except NUL ('\0') and '/'1.00infobox
Ext2Bad blocksTable1.00infobox
Ext2Date rangeDecember 14, 1901 - January 18, 20381.00infobox
Ext2Date resolution1 s1.00infobox
Ext2Dates recordedmodification (mtime), attribute modification (ctime), access (atime)1.00infobox
Ext2DeveloperRémy Card1.00infobox
Ext2Directory contentsTable1.00infobox
Ext2File allocationbitmap (free space), table (metadata)1.00infobox
Ext2File system permissionsUnix permissions, POSIX Access Control Lists (ACL)1.00infobox
Ext2Full nameSecond extended file system1.00infobox
Ext2IntroducedJanuary 1993 with Linux1.00infobox
Ext2Max file size16 GiB – 2 TiB1.00infobox
Ext2Max filename length255 bytes1.00infobox
Ext2Max no. of files10181.00infobox
Ext2Max volume size2–32 TiB1.00infobox
Ext2Partition IDsEBD0A0A2-B9E5-4433-87C0-68B6B72699C7 (GPT) 0x83 (Master Boot Record) Apple_UNIX_SVR2 (Apple Partition Map)1.00infobox
Ext2Preceded byextended file system1.00infobox
Ext2Succeeded byext31.00infobox
Ext2Supported operating systemsLinux, BSD, ReactOS, Windows (through an IFS), macOS (through FUSE), HelenOS, RIOT, Zephyr1.00infobox
Ext2Transparent compressionNo (Available through patches)1.00infobox
Ext2Transparent encryptionNo1.00infobox

Related concept clusters Concept neighborhoods

The concept neighborhoods around Ext2 bring nearby vocabulary together. In this analysis, examples include Kernel, Linux and File. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Ext2
    • Kernel
    • Linux
    • File
    • Data
    • Driver
    • Ext3
    • System
    • Files
    • Systems
    • Filesystem
    • Extended
    • New
  • ext2
    • Kernel
    • Linux
    • File
    • Data
    • Driver
    • Ext3
    • System
    • Files
    • Systems
    • Filesystem
    • Extended
    • New
  • file system
    • System
    • Linux
    • Directory
    • Data
    • Size
    • Block
    • New
    • Kernel
    • Inode
    • Compression
    • Number
    • Systems
  • linux
    • Kernel
    • System
    • Driver
    • Filesystem
    • Systems
    • Ext3
    • Compression
    • Size
    • Block
    • First
    • Needed
    • Second
  • kernel
    • Linux
    • Data
    • Driver
    • Second
    • Operating
    • System
    • Systems
    • Also
    • Compression
    • New
    • Files
    • Size
  • extended file system
    • System
    • Second
    • Linux
    • Directory
    • Data
    • Kernel
    • Size
    • Block
    • First
    • New
    • Also
    • Inode
  • berkeley fast file system
    • System
    • Linux
    • Directory
    • Data
    • Size
    • Block
    • New
    • Kernel
    • Inode
    • Compression
    • Number
    • Systems
  • bsd
    • Macos
    • Windows
    • Minix
    • Operating
    • Access
    • Bitmap
    • Name
    • Systems
    • Table
    • Ext3
    • Filesystem
    • First

Connections between topic areas Semantic bridges

For Ext2, one of the stronger structural bridges in this analysis connects Ext2 with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
Ext2 — Overview · splits 38 ⟂ 26
Ext2 — History · splits 47 ⟂ 17
Ext2 — Compression extension · splits 56 ⟂ 8
Ext2 — Ext2 data structures · splits 58 ⟂ 6
Ext2 — File-system limits · splits 61 ⟂ 3
Ext2 — Under other operating systems · splits 61 ⟂ 3

Map overview Semantic statistics

Ext2

Nodes64
Edges63
Triples93
Avg. degree1.97
Density0.03125
Components1

Source & methodology

TTTA analyzes the structure around Ext2 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History, Overview & Compression extension, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Ext2 · EN edition · Analysis: TopicsToTalkAbout

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