I still have no clue where permanently attached USB SSDs are supposed to be mounted. I just shove them into LVM2 and put the mapper under /mnt since putting them under /home wouldn't let other users access them.
permanently attached USB SSDs are supposed to be mounted
Just mount them somewhere under / device, so if a disk/mount fails the mounts depended on the path can´t also fail.
I keep my permanent mounts at /media/ and I have a udev rule, that all auto mounted media goes there, so /mnt stays empty. A funny case is that my projects BTRFS sub-volume also is mounted this way, although it is technically on the same device.