Re: [uml-user] Where are /proc/mm and /dev/ubd0?

[Jacob S <stormspotter@6Texans.net>]

On Thu, Mar 16, 2006 at 09:19:34AM -0800, Brock, Anthony - NET wrote:
> > -----Original Message-----
> > From: Jacob S
> > Sent: Wednesday, March 15, 2006 6:57 PM
> > Subject: [uml-user] Where are /proc/mm and /dev/ubd0?
> >=20
> > First, I have not been successful in compiling a kernel with=20
> > /proc/mm support. I downloaded source for 2.6.15 as well as=20
> > the skas3-v8.2 patch from Blaisorblade's site. When I do a=20
> > make menuconfig, I can not find any options for /proc/mm=20
> > under "Processor Type & Features" as his site says. I have=20
> > tried it with both Debian's source for 2.6.15 as well as a=20
> > kernel.org source. The host system is running Debian Sarge=20
> > (AMD64). Is there an additional patch I am missing or something?
>=20
> Do you see the following after running 'make menuconfig':
>=20
> # grep PROC_MM .config
> CONFIG_PROC_MM=3Dy
> #

Nope. Not in any of .configs for all 3 2.6.15 kernels I have compiled so
far.
=20
> If so, then you're good. If not...

Should I try another kernel, or is there another patch I am missing?
=20
> > Second, am I correct that the host system needs to have a=20
> > /dev/ubdX device? Do I need special udev rules to get it to=20
> > create the ubdX device, or should it do it automatically when=20
> > the proper module is loaded? When I try to boot a guest=20
> > Debian Sarge AMD64 image I downloaded from the web, I am=20
> > getting the following error:
> >=20
> >  ubda: unknown partition table
> > Kernel panic - not syncing: VFS: Unable to mount root fs on
> > unknown-block(98,0)
>=20
> No, the host system does NOT need a /dev/ubd? device. You need to change
> your guest image's configuration to use the device. Edit /etc/fstab to
> reflect the /dev/ubd? device.

As soon as I say that /dev/ubda exists, I realize this AMD64 image
does not have a ubda device. So I created one, using "mknod /dev/ubda b
98 0". /etc/fstab was already setup to point to ubda. But it still gives
the same error when I try to boot it. :-(

Thanks,
Jacob

--=20
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