Target: increase 80G to 130G
# lvdisplay
mark down LV Path, VG Name
# pvdisplay
find the VG name same with target, so we need to add sda(disk 1)
Increase you disk target
boot from GParted live cd
or Ubuntu GUI #apt install gparted
https://downloads.sourceforge.net/gparted/gparted-live-1.1.0-1-i686.iso
select you target disk, and then "Resize/Move", "Apply all operations"
Complete and reboot to original
# vgdisplay
before and after
Extend the free size "12800" to target volume
# lvextend –l +12800 /dev/vg_app01/lv_xxx
# resize2fs /dev/vg_app01/lv_xxx
