ext4

E37465

ext4 is a widely used, journaling fourth-generation extended file system for Linux, designed for improved performance, reliability, and support for large volumes and files.

Aliases (1)

Statements (50)
Predicate Object
instanceOf Linux file system
file system
journaling file system
backwardCompatibleWith ext2
ext3
defaultFileSystemOn many Linux distributions
designGoal improved performance
improved reliability
support for large files
support for large volumes
developer The Linux community
fullName Fourth Extended File System
initialMainlineReleaseYear 2008
introducedInLinuxKernelVersion 2.6.28
license GPL-compatible (as part of the Linux kernel)
maxFileSize 16 TiB (with 4 KiB block size, typical configuration)
maxFileSystemSize 1 EiB (theoretical design limit)
operatingSystem Linux
predecessor ext3
supports64bitBlockNumbers true
supportsACLs true
supportsBarriers true
supportsCaseSensitiveFilenames true
supportsDelayedAllocation true
supportsDirectoryIndexing true
supportsDiscardTRIM true
supportsEncryption true
supportsExtentBasedAllocation true
supportsExtentsForFiles true
supportsFastFsck true
supportsFlexibleBlockGroups true
supportsHardLinks true
supportsHugeFiles true
supportsJournalChecksumming true
supportsJournalInFile true
supportsJournaling true
supportsMetadataChecksums true
supportsMultiblockAllocation true
supportsNanosecondTimestamps true
supportsOnlineDefragmentation true
supportsPersistentPreallocation true
supportsPOSIXPermissions true
supportsProjectQuotas true
supportsQuota true
supportsResizeOffline true
supportsResizeOnline true
supportsSparseFiles true
supportsSubdirectoryScalability true
supportsSymbolicLinks true
supportsUninitializedBlockGroups true

Referenced by (4)
Subject (surface form when different) Predicate
Linux
Linux/m68k
supportsFileSystem
ext4 ("Fourth Extended File System")
fullName
openSUSE
supports

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