Comment 26 for bug 1801629

struck Linux mint 20.4 (focal, right?) - "just" lvm2 was removed though, not cryptsetup.

I definitely did not remove lvm2 by hand but usually run autoremove. Maybe I'll actually read the "these packages will be removed" next time o_O

My setup was encrypted root, encrypted raid5 and none of those of course mounted since lvm2 was no longer a thing. Easily fixed by liveUsb boot, unlock+chroot and apt install lvm2