On Friday,  4 October 2002 at 20:07:11 -0400, Robert Watson wrote:
>
> On Fri, 4 Oct 2002, Terry Lambert wrote:
>
>> The assumption here is that the devfs will be available to the system
>> before the root is mounted transparently over it.  This is also doable
>> with an unmounted instance of the backing devfs, not yet mounted on
>> /dev, if a transparent mount of / over top of a preexiting / -> /dev is
>> not supported (i.e. devfs is mounted on /dev on the root FS, rather than
>> the root FS being mounted on a backing node on which defvfs is already
>> mounted on /, and the devices showing through as if they were on /).
>
> Actually, no -- Vinum doesn't know how to do that--the device name used in
> this code originates in a userland ioctl() configuration call for Vinum.
> However, here's a patch that makes Vinum use namei() to rely on devfs to
> locate requested devices instead of parsing the device name and guessing
> the device number (incorrectly with GEOM).  Unfortunately, I almost
> immediately run into a divide by zero due to a zero sector size.  Jeff
> Roberson mentioned to me he had a fix for this bug that he sent to Greg,
> but that was never committed.

FWIW, I've never seen this code.  The dates on the patch suggest that
it was made in the last quarter of an hour:

> --- vinumio.c 21 Aug 2002 23:39:51 -0000      1.75
> +++ vinumio.c 5 Oct 2002 00:03:09 -0000

However:

  RCS file: /home/ncvs/src/sys/modules/vinum/Makefile,v
  revision 1.18
  date: 2000/04/16 00:17:46;  author: grog;  state: Exp;  lines: +1 -3
  Remove MAINTAINER.

Since that point, this particular file has had 5 updates, only one
from me.  Jeff's a committer; he can commit it himself if he wants.

Greg
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