E2FSCK(8) System Manager's Manual E2FSCK(8) e2fsck - Linux ext2/ext3/ext4 e2fsck [ -pacnyrdfkvtDFV ] [ -b superblock ] [ -B blocksize ] [ -l|-L bad_blocks_file ] [ -C fd ] [ -j external-journal ] [ -E extended_options ] [ -z undo_file ] device e2fsck ext2/ext3/ext4. ext3 ext4 . e2fsck . device ( /dev/sdc1) . e2fsck . -n -c -l -L. e2fsck . e2fsck "". . e2fsck ( -y -n -p) . 'y' 'n' 'a' Enter . Control-C e2fsck . -a -p. -p . -b _ superblock. . sparse_super. mke2fs -n mke2fs ( sparse_super ). e2fsck . -B _ e2fsck . . e2fsck . e2fsck . -c e2fsck badblocks(8) . . - . -C fd e2fsck . e2fsck. . SIGUSR1 e2fsck. 0 e2fsck . e2fsck . -d ( e2fsck). -D . e2fsck . -D e2fsck --- . -D . . -D e2fsck . -E extended_options e2fsck . ('='). : ea_ver=extended_attribute_version e2fsck . 1 2. 2. journal_only . fragcheck 1 . discard ( / ). 5 . e2fsck . nodiscard . . . no_optimize_extents . /etc/e2fsck.conf. optimize_extents . /etc/e2fsck.conf. inode_count_fullmap . . . ( 40 2.8 5.7 .) /etc/e2fsck.conf. no_inode_count_fullmap inode_count_fullmap. /etc/e2fsck.conf. readahead_kb e2fsck. ( 4 ext4 ) 1/50 . . bmap2extent . fixes_only htree . -D -E bmap2extent. check_encoding . . unshare_blocks . . . . unshare_blocks "-f" . "-n" e2fsck . . -f . -F . e2fsck. -j external-journal . -k -c badblocks(8) . -l _ filename . badblocks(8). . badblocks(8) . -c e2fsck badblocks. -L _ filename. ( -l .) -n `' . e2fsck . -p -y. -p (""). e2fsck . e2fsck e2fsck 4 . ( EXIT CODE.) . -n -y. -r . -t e2fsck. . -v . -V . -y `' e2fsck . -n -p. -z _ . e2undo(8) . undo_file e2fsck-device.e2undo E2FSPROGS_UNDO_DIR. : . e2fsck : 0 - 1 - 2 - 4 - 8 - 16 - 32 - E2fsck 128 - e2fsck. SIGUSR1 e2fsck . ( -C.) SIGUSR2 e2fsck . . e2fsck e2fsck . . e2fsck . ( e2fsck e2fsck LC_ALL C e2fsck .) script(1) e2fsck . dumpe2fs(8). e2fsck debugfs(8) stat(1u) () . debugfs dump uuencode(1). e2image(8). e2image(8) . e2fsck . E2FSCK_CONFIG ( e2fsck.conf(5)). e2fsck Theodore Ts'o . e2fsck.conf(5), badblocks(8), dumpe2fs(8), debugfs(8), e2image(8), mke2fs(8), tune2fs(8) 3 . . : . E2fsprogs 1.47.4 2025 E2FSCK(8)