using enfuse I usually run into memory problems (huge temporary files I believe). My filesystem is 10gb and my home is about 107gb. I’d like to add another 10gb to my filesystem partition from my home one, but I’m afraid to play with gparted.
For any operations involving the OS itself (ie the root partition), I generally and highly recommend using GParted Live instead of gparted installed in the OS.
By booting to a gparted lived cd (or usb), your disk operations are immediate and do not conflict with any running processes, so IMO all disk operations are safer and simpler.
As described in the above link, you’re highly advised to make a working backup (and several backup apps are listed).
I think I have had only one bad experience in over a decade using GParted Live.
I did the backup; create the usb with Gparted; followed the instructions and it couldn’t be easier. I haven’t run into low memory error again, so It worked.