Variable: tramp-devices
tramp-devices is a variable defined in tramp.el.gz.
Value
0
Documentation
Keeps virtual device numbers.
Source Code
;; Defined in /usr/src/emacs/lisp/net/tramp.el.gz
;; Devices must distinguish physical file systems. The device numbers
;; provided by "lstat" aren't unique, because we operate on different hosts.
;; So we use virtual device numbers, generated by Tramp. Both Ange-FTP and
;; EFS use device number "-1". In order to be different, we use device number
;; (-1 . x), whereby "x" is unique for a given (method user host).
(defvar tramp-devices 0
"Keeps virtual device numbers.")