Maintain the integrity of filesystems

Question 1

What command will check the configutation of ext2 or ext3 partitions?

Answer 1

dumpe2fs /dev/sda1

Question 2

What command will show the configuration of a xfs partition?

Answer 2

xfs_info /dev/sda1

Question 3

What command could be used to send xfs data for debugging to the xfs devs?

Answer 3

xfs_metadump

Question 4

What command is used to change the parameters that are output in dumpe2fs?

Answer 4

tune2fs

Question 5

What command and switch will change the mount count needed before a check on ext2 and ext3?

Answer 5

tune2fs /dev/sdb1 -c 100

Question 6

What command and switch will change the mount count on ext2 and ext3?

Answer 6

tune2fs /dev/sdb1 -C 100

Question 7

What command and switch will add jounaling on ext2?

Answer 7

tune2fs /dev/sdb1 -j

Question 8

What command and switch will change the reserved blocks percentage on ext2 and ext3?

Answer 8

tune2fs /dev/sdb1 -m 10

Question 9

Before using tune2fs, what should you do?

Answer 9

Unmount the disk

Question 10

What xfs command will set the 2 jounal format?

Answer 10

xfs_admin /dev/sdb2/ -j

Question 11

What xfs_admin command will show the UUID?

Answer 11

xfs_admin -u /dev/sda1

Question 12

What xfs_admin command will show the label?

Answer 12

xfs_admin -l /dev/sda1

Question 13

What xfs_admin command will change the UUID?

Answer 13

xfs_admin -U xxxx /dev/sda1

Question 14

What xfs_admin command will change the label?

Answer 14

xfs_admin -L xxxx /dev/sda1

Question 15

What should be done to an xfs partition before editing its atttributes?

Answer 15

unmount

Question 16

Which command is all the file system admins and more in one command?

Answer 16

debugfs

Question 17

What two debugfs commands show super block stats?

Answer 17

stats, show_super_stats

Question 18

What debugfs command will show detailed information about a file?

Answer 18

stat

Question 19

What two commands will list deleted files?

Answer 19

lsdel, list_deleted_inodes

Question 20

What debugfs command will copy a file from an unmounted partition?

Answer 20

write internal_file external_file

Question 21

What is the main tool for checking filesystems?

Answer 21

fsck

Question 22

What fsck switch checks all files?

Answer 22

A

Question 23

What fsck switch indicates progress?

Answer 23

I

Question 24

Can fsck be run on a mounted file system?

Answer 24

No

Question 25

What command will show a summary of all disk space across a system’s partitions?

Answer 25

df

Question 26

What df switch will show inodes information?

Answer 26

-i –inodes

Question 27

What df switch will show local filesystems only?

Answer 27

-l –local

Question 28

What df switch will show the filesystem type?

Answer 28

-T –print-type

Question 29

Which command will show space used by directories?

Answer 29

du

Question 30

Which du switch will summarise files as well?

Answer 30

-a -all

Question 31

Which du switch will compute a grand total?

Answer 31

-c -total

Question 32

Which du switch will count the hard links?

Answer 32

-l –count-links

Question 33

Which du switch will limit the depth of the report?

Answer 33

–max-depth

Question 34

Which du switch will summarise the output?

Answer 34

–summarize