- e2fsck is used to check a Linux ext2/ext3/ext4 file system.
- It comes from “e2fsprogs-1.41.12” package, we have covered almost all options here.
- Path: /sbin/e2fsck
Examples:
1. To check a file system
| $ e2fsck /dev/sda1 $ e2fsck /dev/mapper/VG00-LV00 |
2. To check the file system and repair it if found any
| $ e2fsck -p /dev/sda1 |
3. To check the file system and repair it if found any error (with backward compatibility)
| $ e2fsck -a /dev/sda1 |
4. To force e2fsck to only try locating the super-block at a particular blocksize.
| $ e2fsck -B 1024 /dev/sda1 |
5. To to do a read-only scan of the device
| $ e2fsck -c /dev/sda1 |
6. To to write completion information to the specified file descriptor
| $ e2fsck -C fd /dev/sda1 |
7. To print debugging output
| $ e2fsck -d /dev/sda1 |
8. To Optimize directories in file system
| $ e2fsck -D /dev/sda1 |
9. To set the e2fsck extended options
| $ e2fsck -E ea_ver=extended_attribute_version $ e2fsck -E fragcheck |
10. To Force checking even if the file system seems clean
| $ e2fsck -f |
11. To Set the path name where the external-journal for this file system can be found
| $ e2fsck -j external-journal |
12. To preserve the existing bad blocks
| $ e2fsck -kc /dev/sda1 |
13. To add the block numbers specified in the file
| $ e2fsck -l /tmp/file.txt /dev/sda1 |
14. To set the bad blocks list specified in the file
| $ e2fsck -L /tmp/file.txt /dev/sda1 |
15. To open the file system read-only
| $ e2fsck -n /dev/sda1 |
16. To have the backward compatibility
| $ e2fsck -r /dev/sda1 |
17. To have the time stats
| $ e2fsck -t /dev/sda1 |
18. To set the verbose mode
| $ e2fsck -v /dev/sda1 |
19. To get the version information
| $ e2fsck -V |
20. To set the answer to “yes”
| $ e2fsck -y /dev/sda1 |
Related Commands: e2fsck.conf, badblocks, dumpe2fs, debugfs, e2image, mke2fs, tune2fs
