But as @Head_in_a_Stick mentioned, the kernel has overlayfs which provides "union mount".
You might also be interested in the overlay-boot package (in devuan experimental) which provides scripting that uses overlayfs together with netns and unshare to set up and run wafer-thin containers.
]]>Maybe I'm dense, but I don't understand what you're trying to do.
]]>At least there should be a current debian package (knoppix repo for non-std-debian stuff). I have no idea how good or bad the aufs package is.
]]>apt-cache search aufs
bilibop-common - shell functions for bilibop scripts
bilibop-lockfs - lock filesystems and write changes into RAM
mergerfs - another FUSE union filesystem
. So it looks like that i have to use another distribution's repository.
I have been planning to ask from this forum what's going on with aufs and Devuan.
But:
https://aufs.sourceforge.net/
mostly "unsupported since xxx" and "EOL" does not sound good to me. Have anyone tried this "mergerfs"-package? what do you think?
I guess i could use lvm snapshot with chroot but there is some complications with ext3/ext4 and lvm snapshots. Unmounting fs before making snapshot seems to be necessary but not sufficient...
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