I have code which requires the remote mount of a file system. Before accessi
ng
this file system, this code first checks to see if the file server is alive.
 If
so, then it goes ahead and does what it needs to do on the remote file syste
m.
Mounting this remote file system is done by the automounter.

If the file server isn't alive, I'd like this code to then umount this file
system if it is already mounted.

So as a little test, I made a small c-program which calls umount, and unmoun
ts
a particular file system. Before running I do an ls -l on the file system wh
ich
causes it to be mounted, and then I execute the code as root. I get an error
code of zero on return.

I then run df -k, not expecting to see the remote file system present. What 
 I
actually see  is pretty weird.

server:/export/junk      0         0       0        0%    /export/junk

I did an ls -l again, and then ran the code again. df -k shows two lines lik
e
the one above.

Is there something else I should be doing besides the call to umount? Is thi
s
perhaps do the fact that the remote fs was mounted by the automounter?

Thanks in advance,

Stuart

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