Linux Administration/Devices and Filesystems/Integrity

This lesson covers file system integrity. File systems integrity protection capabilities varies depending on filesystem used, ext4 filesystem offers metadata integrity while ZFS offers also full data integrity.

Objectives and Skills
Objectives and skills for the integrity portion of Linux+ certification include:
 * Maintain the integrity of file systems
 * Verify the integrity of file systems
 * Monitor free space and inodes
 * Repair simple file system problems
 * The following is a partial list of the used files, terms and utilities:
 * blkid
 * lsblk
 * du
 * df
 * fsck
 * findmnt
 * /e2fsck/
 * mkfs
 * mke2fs
 * debugfs
 * /dumpe2fs/:  or   depending on your device
 * /tune2fs/ used to modify file system parameters
 * To modify ext4 for metadata checksums
 * To disable ext4 metadata checksum:
 * xfs tools (such as xfs_metadump and xfs_info)

Activities

 * 1) Complete the tutorial IBM: Learn Linux, 101: Maintain the integrity of filesystems
 * 2) Use sar to collect information about filesystems and inode usage