Re: loop.o device busy after umount

Andrew Rodland (arodland@noln.com)
Wed, 24 Jul 2002 15:36:06 -0400


On Wed, 24 Jul 2002 15:33:19 -0400
Kareem Dana <kareemy@earthlink.net> wrote:

> Andrew Rodland <arodland@noln.com> wrote:
> > Kareem Dana <kareemy@earthlink.net> wrote:
> >
> > > Hello,
> > >
> > > I've noticed in kernel 2.4.18 that my loop module remains busy
> > > after I umount the device using it. For example
> > >
> > > mount -t iso9660 -o loop file.iso /mnt
> > > * loop module gets loaded
> > > * lsmod shows "loop 7952 1 (autoclean)"
> > > * ps ax shows [loop0] process
> > >
> > > then
> > > umount /mnt
> > > lsmod shows the same thing - specifically the use of loop as 1 and
> > > the[loop0] process remains open. Trying to rmmod loop gives me a
> > > device or resource busy error.
> >
> > For some reason or other, umount didn't losetup -d the device.
> >
> > Try losetup -d /dev/loop0, and see whether it does what you want, or
> > returns some sort of error.
> >
> > --hobbs
> losetup worked like a charm. Thanks. Any reason umount would not do
> that automatically though? umount -V returns umount: mount-2.11r

No idea, although I can't claim to be an expert. I have mount-2.11h,
and it seems to do it automatically for me.

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