Re: 2.6.11-rc4-mm1 : IDE crazy numbers, hdb renumbered to hdq ?

Matt Mackall
2005-02-24T00:24:44Z

On Thu, Feb 24, 2005 at 12:32:59AM +0100, Mathieu Segaud wrote:
> Andrew Morton <akpm@osdl.org> disait derni??rement que :
>
> > Helge Hafting <helge.hafting@aitel.hist.no> wrote:
> >>
> >> This kernel came up, but my boot script complained about no /dev/hdb3
> >> when trying to mount /var.
> >> (I have two IDE disks on the same cable, and an IDE cdrom on another.)
> >> They are usually hda, hdb, and hdc.
> >>
> >> MAKEDEV hdq did not help. Looking at sysfs, it turns out that
> >> /dev/hdq1 is at major:3 minor:1025 if I interpret things right.
> >> (/dev/hda1 is at 3:1, which is correct.)
> >> These numbers did not work with my mknod, it created 7:1 instead.
> >> So I didn't get to test this mysterious device.
> >>
> >> But I assume this is a mistake of some sort, I haven't heard about any
> >> change in the IDE numbering coming up? 2.6.1-rc3-mm1 works as expected.
> >>
> >> It may be interesting to note that my root raid-1 came up fine,
> >> consisting of hdq1 and hda1 instead of the usual hdb1 and hda1.
> >
> > I don't know what could be causing that. Please send .config. If you set
> > CONFIG_BASE_FULL=n, try setting it to `y'.
>
> I've got the same problem here on my box, udev creates hds and hdu
> entries when running 2.6.11-rc4-mm1, whereas it creates correctly hdf
> et hdh, on other kernels.

Are these misnamed and misnumbered devices mountable? If not, can you
mknod device nodes at the proper major:minor location and have them
work?

Seems ->disk_name is getting modified between ide_setup() and
add_disk() somehow, giving us:

hdb: ...
hdq: hdq1 hdq2...

--
Mathematics is the supreme nostalgia of our time.