[Fix] Karmic: Automaticly unmount CIFS shares at shutdown & restart with no errors!

[ubradford]

Updated: 12/12/09
I've found that the following works on Ubuntu 9.10 Karmic while using wireless and WPA2 on my laptop:

After hours of beating my head against the wall trying to figure out how to get rid of those time-consuming CIFS VFS errors during shutdown, I cobbled together this (ugly) fix.

I take no credit for this script. I found it here. I simply put two and two together, as I guessed this script may execute before Network Manager is killed. I just plugged in the umountnfs.sh portion.

• Save the script somewhere safe. I saved it in ~/Scripts, and gave it root-only permissions.
• sudo chmod +x /path/to/script/scriptname
• Add the script to your Start-up Applications. (System > Preferences > Startup Applications)

#!/usr/bin/env python

#Author: Seamus Phelan

#This program runs a custom command/script just before gnome shuts 
#down.  This is done the same way that gedit does it (listening for 
#the 'save-yourself' event).  This is different to placing scipts 
#in /etc/rc#.d/ as the script will be run before gnome exits.
#If the custom script/command fails with a non-zero return code, a 
#popup dialog box will appear offering the chance to cancel logout
#
#Usage: 1 - change the command in the 'subprocess.call' in 
#           function 'session_save_yourself' below to be what ever
#           you want to run at logout.
#       2 - Run this program at every gnome login (add via menu System 
#           -> Preferences -> Session)
# 
#

import sys
import subprocess
import datetime

import gnome
import gnome.ui
import gtk


class Namespace: pass
ns = Namespace()
ns.dialog = None


def main():
    prog = gnome.init ("gnome_save_yourself", "1.0", gnome.libgnome_module_info_get(), sys.argv, [])
    client = gnome.ui.master_client()
    #set up call back for when 'logout'/'Shutdown' button pressed
    client.connect("save-yourself", session_save_yourself)
    client.connect("shutdown-cancelled", shutdown_cancelled)


def session_save_yourself( *args):
    #Unmount those CIFS shares!
    retcode = subprocess.call("sudo /etc/init.d/umountnfs.sh", shell=True)
    if retcode != 0:
        #command failed  
        show_error_dialog()
    return True

def shutdown_cancelled( *args):
    if ns.dialog != None:
        ns.dialog.destroy()
    return True


def show_error_dialog():
    ns.dialog = gtk.Dialog("There was a problem running your pre-shutdown script",
                           None,
                           gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
                           ("There was a problem running your pre-shutdown script - continue logout", gtk.RESPONSE_ACCEPT))
    if ns.test_mode == True:
        response = ns.dialog.run()
        ns.dialog.destroy()
    else:
        #when in shutdown mode gnome will only allow you to open a window using master_client().save_any_dialog()
        #It also adds the 'Cancel logout' button
        gnome.ui.master_client().save_any_dialog(ns.dialog)



#Find out if we are in test mode???
if len(sys.argv) >=2 and sys.argv[1] == "test":
    ns.test_mode = True
else:
    ns.test_mode = False

if ns.test_mode == True:
    main()
    session_save_yourself()
else:
    main()
    gtk.main()

• Run in terminal:

  sudo visudo

• Add the following to the bottom of the file:

  %admin ALL=NOPASSWD: /etc/init.d/umountnfs.sh

• Press Ctrl-X to exit, press Y to save changes, and hit [Enter] to write the file.

I hope this helps! I'm a linux noob, so apologies if my guide wasn't perfect.
(Credit to stevo1982 for the sudo password workaround!)