The dumpe2fs command is used to print the super block and blocks group information for the filesystem present on device. Can be used with ext2/ext3/ext4 filesystem for information. The printed information may be old or inconsistent when it is used with a mounted filesystem.
What is the use of e2fsck command in Linux?
e2fsck is used to check the ext2/ext3/ext4 family of file systems. For ext3 and ext4 filesystems that use a journal, if the system has been shut down uncleanly without any errors, normally, after replaying the committed transactions in the journal, the file system should be marked as clean.
What is the use of tune2fs in Linux?
tune2fs allows the system administrator to adjust various tunable filesystem parameters on Linux ext2, ext3, or ext4 filesystems. The current values of these options can be displayed by using the -l option to tune2fs(8) program, or by using the dumpe2fs(8) program.
What is mke2fs in Linux?
Description. mke2fs is used to create an ext2, ext3, or ext4 filesystem, usually in a disk partition. device is the special file corresponding to the device (e.g /dev/hdXX). blocks-count is the number of blocks on the device. If omitted, mke2fs automagically figures the file system size.
What is superblock in Linux?
A superblock is a record of the characteristics of a filesystem, including its size, the block size, the empty and the filled blocks and their respective counts, the size and location of the inode tables, the disk block map and usage information, and the size of the block groups.
How do I use fsck in Linux?
Run fsck on Linux Root Partition
- To do so, power on or reboot your machine through the GUI or by using the terminal: sudo reboot.
- Press and hold the shift key during boot-up. …
- Select Advanced options for Ubuntu.
- Then, select the entry with (recovery mode) at the end. …
- Select fsck from the menu.
What is the use of resize2fs command in Linux?
The resize2fs is a command-line utility that allows you to resize ext2, ext3, or ext4 file systems. Note : Extending a filesystem is a moderately high-risk operation. So it is recommended to backup your entire partition to prevent data loss.
What is the difference between fsck and e2fsck?
fsck is just the original name. When they came out with new file systems they would need a specific tool for each one, efsck for ext, e2fsck for ext2, dosfsck, fsckvfat. So they made fsck the front end that just calls whichever is the appropriate tool. fsck is a wrapper for the filesystem-specific fsck.
What is file system check in Linux?
fsck (file system check) is a command-line utility that allows you to perform consistency checks and interactive repairs on one or more Linux file systems. … You can use the fsck command to repair corrupted file systems in situations where the system fails to boot, or a partition cannot be mounted.
How do I run tune2fs?
Using tune2fs
The most commonly used options to tune2fs are: –c max-mount-counts: Adjust the maximum mount count between two file system checks. -C mount-count: Set the number of times the file system has been mounted. -i interval-between-checks[d|m|w]: Adjust the maximum time between two file system checks.
What is e2label in Linux?
Description. e2label will display or change the filesystem label on the ext2, ext3, or ext4 filesystem located on device. If the optional argument new-label is not present, e2label will simply display the current filesystem label.