My file server often has various disks swapped in and out. It can get confusing which /dev/sd? corresponds to which drive. While reading the man page of findfs, I stumbled on this:
The complete overview about filesystems and partitions you can get for example by:
lsblk —fs
partx —show
blkid
These three things (along with judicious use of e2label and the other *label commands) is going to make my life a lot easier!