Subject: Re: uvn_flush: WARNING: changes to page may be lost!
To: Dave Huang <>
From: Chuck Silvers <>
List: current-users
Date: 05/01/2001 16:05:53
that's pretty useful actually, I'm pretty sure I know what's causing it.
I'll look at the code when I get home tonite and let you know.


On Tue, May 01, 2001 at 04:28:25PM -0500, Dave Huang wrote:
> On Sun, 29 Apr 2001, Chuck Silvers wrote:
> > do you have a way of triggering this problem on demand,
> > or is it an occasional thing?
> Okay, I've found a way to reproduce the problem, although I don't know
> how helpful it is :)
> - Mount a CDROM on the NetBSD/alpha machine
> - Connect to the CD's share point from a Windows box (samba-
>   from pkgsrc installed on the NetBSD machine)
> - From the Windows box, open a Microsoft Word file that's on the CD
>   (Word 2000, if it matters)
> - Close the Word file
> Then either
> a) Attempt to unmount the CDROM from the NetBSD machine (i.e. umount
>    /cdrom). The umount fails with "umount: /cdrom: Device busy", but the
>    uvn_flush message gets printed.
> or
> b) Disconnect from the share, then unmount the CDROM. The umount
>    succeeds, and the uvn_flush message gets printed.