findfs - Find a filesystem by label or UUID
findfs LABEL=label
findfs UUID=uuid
findfs will search the disks in the system looking for a filesystem which has a label matching label or a UUID equal to uuid. If the filesystem is found, the device name for the filesystem will be printed on stdout.
findfs was written by Theodore Ts’o (tytso@mit.edu).
findfs is part of the e2fsprogs package and is available from http://e2fsprogs.sourceforge.net.
fsck(8)