Configure local storage

Question 1

Display disk partition table for disk /dev/vdb

Answer 1

parted /dev/vdb print

Question 2

Write an MBR disk label to disk /dev/vdb

Answer 2

parted /dev/vdb mklabel msdos

Question 3

Write a GPT disk label to disk /dev/vdb

Answer 3

parted /dev/vdb mklabel gpt

Question 4

Create an MBR partition on disk /dev/vdb

Answer 4

parted /dev/vdb mkpart primary xfs 2048s 1000MB

udevadm settle

Question 5

Create a GPT partition on disk /dev/vdb

Answer 5

parted /dev/vdb mkpart usersdata xfs 2048s 1000MB

udevadm settle

Question 6

Delete a partition 1 on disk /dev/vdb

Answer 6

parted /dev/vdb rm 1

Question 7

Create 3 physical volumes on /dev/vdb

Answer 7

pvcreate /dev/vdb1 /dev/vdb2 /dev/vdb3

Question 8

Remove physical volumes /dev/vdb2 and /dev/vdb1

Answer 8

pvremove /dev/vdb2 /dev/vdb1

Question 9

Display physical volume /dev/vdb1

Answer 9

pvdisplay /dev/vdb1

Question 10

Display volume group vg01

Answer 10

vgdisplay vg01

Question 11

Create volume group vg01 and assign physical volumes /dev/vdb2 and /dev/vdb1 to it

Answer 11

vgcreate vg01 /dev/vdb2 /dev/vdb1

Question 12

Add physical volume /dev/vdb3 to volume group vg01

Answer 12

vgextend vg01 /dev/vdb3

Question 13

Remove physical volume /dev/vdb3 from volume group vg01

Answer 13

pvmove /dev/vdb3

vgreduce vg01 /dev/vdb3

Question 14

Volume group vg01 is no longer needed. Delete it.

Answer 14

vgremove vg01

Question 15

Create a 700 MB logical volume called lv01 in volume group vg01

Answer 15

lvcreate -n lv01 -L 700M vg01

Question 16

Remove logical volume lv01 in volume group vg01

Answer 16

lvremove /dev/vg01/lv01

Question 17

Display logical volume /dev/vg01/lv01

Answer 17

lvdisplay /dev/vg01/lv01

Question 18

It is important to correctly identify disk and disk partitions. What commands are used to identify devices on your system?

Answer 18

lsblk, blkid, or cat /proc/partitions commands

Question 19

Persistent mounts are configured where?

Answer 19

/etc/fstab

Question 20

How do you configure a persistent mount by UUID or its label?

Answer 20

vim /etc/fstab
By Label:
/dev/vg01/lv01 /mnt/data xfs defaults 1 2
By UUID:
31b9363b-add8-4b46-a4bf-c199cd478c55 /mnt/data xfs defaults 1 2
systemctl daemon-reload

Question 21

How to add 500MB more swap space to the system

Answer 21

swapoff -v /dev/vg01/lv01
lvextend -L +500MB /dev/vg01/lv01
mkswap /dev/vg01/lv01
swapon -va /dev/vg01/lv01

Question 22

how to create a logical volume with exactly 128 extents

Answer 22

lvcreate -l 128