Ubuntu – How to disable a specific mount, when using automount over LDAP

autofsautomountldapnfs

I am using Ubuntu 11.04, on which NFS paths are automounted using AutoFS/LDAP. For example, /path1 and /path2 are auto mounted, but I want to disable automount for /path1, because I want to use a local folder instead, so I added this to /etc/auto.master:

/path1 -null

But it doesn't seem to have any effect. So what is the proper way of overriding/disabling such specific mounts on client side for a automount map loaded via LDAP?

I don't have control over the LDAP server, and it automounts 10 or so paths out of which I want one disabled.

Edit:
When I run mount command I see something like this

home.xxx.com:/home1 on /mnt/home1 type nfs 
git.xxx.com:/git on /mnt/git type nfs

I thought /mnt/home1 and /mnt/git are loaded separately from ldap, but automount -m shows only one entry

Mount point: /mnt

source(s):

  type: ldap
  map: ldap:ou=auto.mnt,ou=automount,dc=xxx,dc=com

That said wouldn't /mnt/git -null' in/etc/auto.master` work, or I will have to make whole /mnt null?

Best Answer

Have you configured the key MASTER_MAP_NAME in /etc/default/autofs to point out your ldap directory master map ?

If so this will override and not use your local auto.master map, see auto.master man page.

You can also verify which maps are in use with automount -m.

Related Solutions

Ubuntu – Disable automount of a specific mtp device

First, find the VendorID and ProductID of the device using lsusb. For my Samsung Galaxy S7 Edge, the appropriate line is below.

Bus 001 Device 029: ID 04e8:6860 Samsung Electronics Co., Ltd Galaxy (MTP)
---------------VendorID--^ : ^--ProductID

You also need the directory associated with where this device is plugged in. You can go hunting around /sys/bus/usb/devices/*/idProduct manually, or you can use this quick little script by @radu-rădeanu.

Save this to ~/bin/findUSBbyID.sh and chmod +x it.

#!/bin/bash

if [ $# -ne 2 ];then
  echo "Usage: `basename $0` idVendor idProduct"
  exit 1
fi


for X in /sys/bus/usb/devices/*; do 
    if [ "$1" == "$(cat "$X/idVendor" 2>/dev/null)" -a "$2" == "$(cat "$X/idProduct" 2>/dev/null)" ]
    then
        echo "$X"
    fi
done

Run it as ~/bin/findUSBbyID.sh 04e8 6860. The output will look somthing like this:

/sys/bus/usb/devices/1-1.2

With this information you want to create a new file called /etc/udev/rules.d/90-disable-usb-device.rules. You'll need root permissions so sudo or gksudo your favorite editor as appropriate.

The file should contain one line like below. Correct the VendorID and ProductID to match your device. Also correct the /sys/bus/usb/devices/$something/authorized path to match your product as found with the findUSBbyID.sh script.

ACTION=="add", ATTR{idVendor}=="04e8", ATTR{idProduct}=="6860", RUN="/bin/sh -c 'echo 0 > /sys/bus/usb/devices/1-1.2/authorized'"

You may get another popup "Unable to mount an MTP device". That issue is being discussed here.

Best Answer

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Ubuntu – Disable automount of a specific mtp device

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