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ext

(EXTended file system) The first file system developed exclusively for the Linux operating system. Introduced in 1992, the limits of the Minix file system originally used in Linux were greatly increased: volume size from 64MB to 2GB, and file names from 14 to 255 characters. Ext also introduced a virtual file system (VFS) interface, which allows different underlying architectures to be used.

ext2, ext3, ext4
In 1993, ext2 added the traditional Unix inode and other features of the Unix File System (see inode and UFS). Maximum volume size jumped to 32TB.

Introduced in 2001, the major enhancement to ext3 was three levels of journaling, the most robust of which duplicates the indexes and file contents in the journal before updating the actual file system (see journaling file system). See file system.

In 2008, ext4 added several enhancements for large files: maximum volume size increased to one exabyte and file size to 16TB.
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EXT

On drawings, abbr. for “exterior.”
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Although ReHypar generates the better I/O bandwidth as compared to ext4 on SSD, the improvement ratio is smaller than that in ext2. For example, on top of 256 MB of file size, applying 256 KB of extent size to ext2 gives 14% of speedup as compared to ext2 on SSD, whereas applying the same extent size to ext4 results in 11% of speedup as compared to ext4 on SSD.
Figures 5(a) and 5(b) show the transaction rates of xfs and ext2, while comparing to ReHypar integrated with ext2.
In the figures, on top of ext2, the performance difference between SSD and HDD is much smaller than that in IOzone write operations.
The effect of the loss of affinity with larger spread sizes is not pronounced in the Linux ext2 file system because it creates or deletes files without synchronous directory modification [Ts'o 1999].
Lidholt, "The putative tumor suppressors EXT1 and EXT2 are glycosyltransferases required for the biosynthesis of heparan sulfate," Journal of Biological Chemistry, vol.
Koyama et al., "Compound heterozygous loss of Ext1 and Ext2 is sufficient for formation of multiple exostoses in mouse ribs and long bones," Bone, vol.
This tool is compatible with the following File Systems: FAT12, FAT16, FAT32, EXT2, EXT3 and NTFS partitions.
Mutations in EXT1 and EXT2 account for 44%-66% and 30% of HME patients, respectively, whereas EXT3 appears to be the minor locus (100).
Diagnosis: Genetic confirmation of the diagnosis can be obtained by mutation analysis of EXT1, EXT2, and EXT3 (100, 102, 103).
Comparison of fluorescent single-strand conformation polymorphism analysis and denaturing high-performance liquid chro matography for detection of EXT1 and EXT2 mutations in hereditary multiple exostoses.
Recently, denaturing HPLC (DHPLC) appears to be more sensitive than other methods in mutation detection, as exemplified in the detection of TSC1 (13), TSC2 (14), BRCA1 (15,16), BRCA2 (15), CFTR (13), EXT1 (17), EXT2 (17), and HPRT (18).
Comparison of fluorescent single-strand conformation polymorphism analysis and denaturing high-performance liquid chromatography for detection of EXT1 and EXT2 mutations in hereditary multiple exostoses.