Rescan existing disks:

echo 1 > /sys/class/scsi_device/1\:0\:1\:0/device/rescan

Check new disk:

fdisk -l /dev/sdb

Quick new disk

Create new disk of physical volume if you see it with ‘fdisk -l’

pvcreate /dev/sdb

Extend existing volume group with new disk

vgextend rl /dev/sdb

Extend existing logical volume to the max

lvextend -l +100%FREE /dev/rl/root

Grow existing files system

xfs_growfs /dev/rl/root

Physical / Logical Volumes

Create physical volume

pvcreate /dev/sda3
    Physical volume "/dev/sda3" successfully created.

Resize physical volume (e.g. extended in VMware)

pvresize /dev/sdb

pvdisplay

Extend physical volume group

vgextend centos /dev/sda3
    Volume group "centos" successfully extended

vgdisplay

Extend logical volume
in G'igs

lvextend -L +8G /dev/system/volume

or full (using everything)

lvextend -l 100%FREE /dev/mapper/volume

Grow filesystem

xfs_growfs /dev/system/volume

Create new logical volume

mkfs.xfs /dev/centos/volume