Re: Solve the problem that umount will fail when an opened file isn't closed

From: Mike Smullin
Date: Fri Jun 16 2006 - 12:37:56 EST


Thanks for that, Jan. What a great idea!

>I have implemented an auto-mount & auto-umount
facility based on USB
>hotplug.

Colin can you explain how you implemented this? I would like to try it, too.

Thanks,
Mike

--
Mike Smullin
"The day I come in front of the Gartner audience and say we have a
better Unix than Linux, that'll be a good day" -- Steve Ballmer
http://www.mikesmullin.com

--- Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx> wrote:

>
>Hi all,
>I have implemented an auto-mount & auto-umount
facility based on USB
>hotplug.
>An annoying problem will occur when some process
doesn't close its open file
>and auto-umount is trying to umount that mount
point after usb disk has been
>unplugged.
>Is there any way to force it to be umounted in this
situation?
>

fs/super.c:

/* Forget any remaining inodes */
if (invalidate_inodes(sb)) {
printk("VFS: Busy inodes after unmount of
%s. "
"Self-destruct in 5 seconds. Have a nice
day...\n",
sb->s_id);
}

That's what happens if you eject a CD. The box won't
explode though.


Jan Engelhardt
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