Just found this topic from a random google on something else, so registered here to respond. I'm the foxclone dev. I'm a mint user (of over eight years) and have dabbled with linux since the early noughties. There is a backstory:
https://forums.linuxmint.com/viewtopic. ... 9#p2302809
and I'm active on the LM forum.
I have tried to make foxclone as simple as possible for newbies. So you won't find all the "bells and whistles" you get in clonezilla. With a target audience of newbies - that's why there is a comprehensive user guide.
zfs - sorry about that, foxclone is a front end for partclone* (as are the alternatives such as rescuezilla) and it only supports a limited number of filesystems, zfs is not one of them. Unfortunately some changes I made in foxclone50 (to recognise exFAT) meant that it tries to image zfs, a self inflicted bug which I've just fixed and hopefully foxclone52 will be out in a few weeks. For unsupported filesystems (includes LVM and LUKS) foxclone should be using dd to image the partition. This works but not ideal, it has to copy the entire partition rather than just used blocks. Takes longer, larger image file. Example from my current testing - vanilla install of mint to 256GB sata SSD, installed size 17GB, image size 3.7GB, time 2-3 mins to nvme. Same with LVM, image size 24GB, time 20-30 mins, it has to image the whole partition. I'm not aware of any utility that will image backup zfs, LVM, LUKS.
The majority of users boot foxclone from a stick using the iso. The deb is there so you can install it in another debian/ubuntu. Probably a statement of the obvious to a lot here, you cannot image backup a live filesystem, so there is no point installing the deb in your normal system. I have a backup drive, it is where my foxclone image backups, timeshift and backintime snapshots live. I have another copy of mint installed to the backup drive and foxclone installed in that. I also have every disaster recovery tool I can think of installed in the backup mint. If I want to take an image backup I boot my backup drive. Saves messing around with usb sticks.
Happy to respond to any questions.
Glad so see the puppy forum uses the same software as the LM forum, I know my way around
* produced by the same team responsible for clonezilla