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   ext4    ( 5 )

вторая расширенная файловая система (the second extended file system)

Поддержка ядра (Kernel support)

This section lists the file system driver (e.g., ext2, ext3, ext4) and upstream kernel version where a particular file system feature was supported. Note that in some cases the feature was present in earlier kernel versions, but there were known, serious bugs. In other cases the feature may still be considered in an experimental state. Finally, note that some distributions may have backported features into older kernels; in particular the kernel versions in certain "enterprise distributions" can be extremely misleading.

filetype ext2, 2.2.0

sparse_super ext2, 2.2.0

large_file ext2, 2.2.0

has_journal ext3, 2.4.15

ext_attr ext2/ext3, 2.6.0

dir_index ext3, 2.6.0

resize_inode ext3, 2.6.10 (online resizing)

64bit ext4, 2.6.28

dir_nlink ext4, 2.6.28

extent ext4, 2.6.28

extra_isize ext4, 2.6.28

flex_bg ext4, 2.6.28

huge_file ext4, 2.6.28

meta_bg ext4, 2.6.28

uninit_bg ext4, 2.6.28

mmp ext4, 3.0

bigalloc ext4, 3.2

quota ext4, 3.6

inline_data ext4, 3.8

sparse_super2 ext4, 3.16

metadata_csum ext4, 3.18

encrypt ext4, 4.1

metadata_csum_seed ext4, 4.4

project ext4, 4.5

ea_inode ext4, 4.13

large_dir ext4, 4.13

casefold ext4, 5.2

verity ext4, 5.4

stable_inodes ext4, 5.5