Linux disk cloning, who can help?

Question

linux

Everyone, good evening!
Kindly tell me how to be: There is a
PROXMOX server on it Docker (with a disk of 250 GB) 150
full
, in Linux, I'm not strong, I failed.
Tell me if there is a handy tool like Acronis where you click a button and you're done.
I will be very grateful.

Answer 1

The question is whether rbd is used there? if it is used, then trouble)))))
of the solutions, probably: snapshot lvm, fsarchiver, rsync in the end ... the simplest tar + gzip)