Extend LVM on qcow2 images

• Follow https://www.technomenace.com/2014/08/how-to-extend-lvm-on-qcow2-images/

• qemu-img resize c845ba080f2326a51c53965af1ac6c18 +3G
• Modify partition with: fdisk /dev/vdX + Reboot
• pvresize /dev/vdX# (Expand a PV after enlarging the partition)
• lvextend -L +1.8G /dev/mapper/VolGroup-lv_root
• resize2fs /dev/mapper/VolGroup-lv_root

See also

• Read about raw files and qcow2 differences: https://www.berrange.com/posts/2017/02/10/the-surprisingly-complicated-world-of-disk-image-sizes/
• Qcow file format
• virt-resize