umounting from a non-global zone

I recently created a lofi device to mount an iso.   I then mounted that iso in a non-global zone so the zone could read the iso image.  I am not not able unmount the iso from it's mount point in the non-global zone or from the global zone.  Anybody know how.

root@server: umount /mnt
umount: /mnt busy

root@server: umount -f /mnt
umount: Operation not supported
umount: cannot unmount /mnt
dsmexpertsAsked:
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dsmexpertsConnect With a Mentor Author Commented:
You must be reside outside the root of the non-global zone in order for a umount to work.
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woolmilkporcCommented:
fuser /mnt ?
umount -l /mnt ?

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dsmexpertsAuthor Commented:
Results:

root@server: fuser /mnt
/mnt:

root@server: umount -l /mnt
umount: illegal option -- l
Usage:
umount [-f] [-V] [-o specific_options] {special | mount-poin

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dsmexpertsAuthor Commented:
OK I got it working:  I had umount it from the zone first using the full path as you can see in line 1. I then umounted it from the global zone in line 2.

/dev/lofi/2 /iso1 hsfs ro,noglobal,maplcase,rr,traildot,dev=24c0002 1297965654
/iso1 /hosts/chndm1/root/iso1 lofs dev=24c0002 1297965777
1. root@server: umount /hosts/chndm1/root/iso1
2. root@server: umount /iso1
3. root@server:

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dsmexpertsAuthor Commented:
Further research showed how to do it.
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