Filesystem Utilities

Question 1

What do filesystem utilities allow?

Answer 1

Setup, inspection, repair, and resizing of Linux storage

Question 2

Why are filesystem utilities useful?

Answer 2

For maintaining filesystem health and adapting storage needs

Question 3

Name common filesystem utility commands.

Answer 3

df, du, fio, mkfs, fsck, xfs_repair, resize2fs, xfs_growfs

Question 4

What does df do?

Answer 4

Displays used and available disk space

Question 5

What does df stand for?

Answer 5

Disk Free

Question 6

Command to show human-readable disk space?

Answer 6

df -h

Question 7

What does du do?

Answer 7

Shows disk usage of files and directories

Question 8

What does du stand for?

Answer 8

Disk Usage

Question 9

Command for summarized human-readable disk usage?

Answer 9

du -sh /path

Question 10

Why use du?

Answer 10

To identify which folders consume the most space

Question 11

What does fio do?

Answer 11

Benchmarks read/write disk performance

Question 12

What does fio stand for?

Answer 12

Flexible I/O Tester

Question 13

Why use fio?

Answer 13

To simulate workloads and diagnose slow storage or evaluate new drives

Question 14

What does mkfs do?

Answer 14

Creates a new filesystem on a partition or disk

Question 15

Syntax for mkfs?

Answer 15

mkfs -t <type> <device></device></type>

Question 16

Example of mkfs?

Answer 16

mkfs -t ext4 /dev/sdb1

Question 17

What does fsck do?

Answer 17

Verifies and repairs filesystem metadata

Question 18

When should fsck be used?

Answer 18

After power failures or crashes, only on unmounted filesystems

Question 19

Example of fsck?

Answer 19

fsck -fy /dev/sdb1

Question 20

What does xfs_repair do?

Answer 20

Checks and repairs XFS filesystem issues

Question 21

When is xfs_repair required?

Answer 21

If XFS wasn’t unmounted cleanly

Question 22

What does resize2fs do?

Answer 22

Grows or shrinks ext2, ext3, or ext4 filesystems

Question 23

What must be done before using resize2fs?

Answer 23

Resize the underlying partition first

Question 24

What does xfs_growfs do?

Answer 24

Grows XFS filesystems (cannot shrink)

Question 25

Example of xfs_growfs?

Answer 25

xfs_growfs /mount/point