On Thu, Feb 17, 2011 at 8:36 AM, dixan rodriges <dixan23@gmail.com> wrote:
> Dear All,
>
>
>
> I have created* 252 loop devices in my system and i mounted few iso filses
> into loop devices .when i rebooting the system error showing "faild to
> umount "
>
>
> how can forcefully umount the loop device

Not specific to loopback devices, but in some cases I use fuser to
kill all procs associated with a mount... You may also need to remount
it as read-only before unmounting and maybe use the -nr option to
umount.
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At Thu, 17 Feb 2011 10:06:10 -0500 CentOS mailing list <centos@centos.org> wrote:

>
> On Thu, Feb 17, 2011 at 8:36 AM, dixan rodriges <dixan23@gmail.com> wrote:
> > Dear All,
> >
> >
> >
> > I have createdÂ* 252 loop devices in my system and i mounted few iso filses
> > into loop devices .when i rebooting the system error showing "faild to
> > umount "
> >
> >
> > how can forcefully umount the loop device
>
> Not specific to loopback devices, but in some cases I use fuser to
> kill all procs associated with a mount... You may also need to remount
> it as read-only before unmounting and maybe use the -nr option to
> umount.

Note: ISO9660 file systems (CD/DVD images) can only be mounted
read-only. If the OP is mounting CD/DVD ROM image ISO files, they
already will be mounted read-only.

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>
>

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