Revision as of 22:36, 16 December 2007 (view source) osdev>B.E (→‎Data structures) ← Older edit		Revision as of 22:39, 16 December 2007 (view source) osdev>B.E No edit summary Newer edit →
Line 1: The Second Extended Filesystem (ext2fs) was the default filesystem of Linux prior the advent of the journaling file systems ext3fs and ReiserFS. It has native support for UNIX ownership / access rights, symbolic and hard links and other Unix-native properties. Like HPFS, it tries to minimize head movement by distributing data across the disk. Also, by using "groups", it minimizes the impact of fragmentation. It is another "inode" based system. An ext2fs-partition is made up from blocks, which normally are 1K each. The first block (the bootblock) is zeroized, all the other blocks are divided into so-called block groups (normally, between 256 and 8192 blocks form a group). Each block group contains: ~~Ext2/ext3 is used by many distributions of Linux. Ext2/3 is base on the Unix File System (UFS), ExtX has removed components that UFS no longer needed.~~ ~~The Ext2 file system is split up into blocks, each block is then grouped together into block groups. Each block group contains a backup copy of the superblock, and group descriptor table.~~ ~~The superblock (which contains important information about the layout of the file system) is located at byte 1024 and is 1024 bytes in length~~ == File Sytem Structure ==

Ext2: Difference between revisions

Ext2 (view source)