Re: mounted multiple times

"Trevor \"TeC\" Christian" <trevor@xxxxxxxxxxxxxxxxx> · Sat, 03 Dec 2005 00:23:15 -0400

Jack Tanner wrote:
David G. Miller (aka DaveAtFraud <dave <at> davenjudy.org> writes:

Question, does umount still unmount "one instance" of the mount?  This 
is the behavior under Red Hat Enterprise 3 (2.4 kernel) which also 
doesn't complain.  The application I QA hasn't managed to get confused 
enough under RHEL4 (we start supporting RHEL4 under our next release) to 
mount one of our mount points multiple times so I don't have a data 
point for RHEL4 (2.6 kernel).

Under FC4 (kernel 2.6.14-1.1644), umount removes no mounts at all if there are
multiple mounts of the same mount point.

Under RHEL3, I just keep issuing umounts for the mount point until I get 
rid of all of them.  Would this work for your situation?  Any idea when 
this "feature" got added to mount/umount?

The only thing that worked for removing one of the duplicate mount points was
umount -f (as root).
I wrapped a code snippet posted earlier in this thread into a function that I
then placed in my .bashrc.
mount_if_not_mounted() {

       MOUNT='/bin/mount'

       MOUNTPOINT='/mount/point'

       if [ "`$MOUNT | grep "$MOUNTPOINT"`" = "" ] ; then

               $MOUNT $1

       fi

}

What is the expected value of $1?
Minor modification
mount_if_not_mounted() {
       MOUNT='/bin/mount'
       MOUNTPOINT=$1
       if [ "`$MOUNT | grep "$MOUNTPOINT"`" = "" ] ; then
               $MOUNT $MOUNTPOINT
       fi
}
mount_if_not_mounted "/mnt/samba/share";
In this case there's a parameter being supplied to the funtion which is 
used to define the mount point...
That works wonderfully when invoked from .bash_profile as
mount_if_not_mounted /mount/point

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Re: mounted multiple times

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