I have bought additional disk space for my VPS, which is running Ubuntu 16.04.
to add the unallocated space to the root partition, I do think I have to boot the system by a live media to be able to add the unallocated space to the extended partition. If this is way I have to pass, How is it possible to boot this system by a live Ubuntu while my only access to it is just an ssh connection?
growpart
is your friend, aswell asresize2fs
. See askubuntu.com/a/937351/672946 – Panki Aug 26 '19 at 11:30