Yes, /dev/sda1 does exist in dom0:
l500r root # ls -l /dev/sda1
brw-rw---- 1 root disk 8, 1 Oct 23 23:28 /dev/sda1
l500r root #
This box was setup as a "tweaked" udev box per the instructions in sections 1
and 2 of:
http://www.gentoo.org/doc/en/udev-guide.xml
It seems that the gentoo init scripts detect this configuration and construct
a set of devices early in the boot then start udevd (still running).
Using 0801 instead of /dev/sda1 yields the following for both the file and
lvm disk:
VFS: Cannot open root device "0801" or unknown-block(8,1)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,1)
--
karl@xxxxxxxxxxxxxx
On Saturday 29 January 2005 07:41, Mark Williamson wrote:
> Interesting...
>
> Does /dev/sda1 exist in dom0? (I'm guessing not as you'll be using udev or
> devfs). What happens if you specify 0801 instead of /dev/sda1 in your
> config file?
>
> Cheers,
> Mark
>
> On Saturday 29 January 2005 05:56, Karl Higgins wrote:
> > Hello,
> >
> > I have a gentoo box running xen 2.0.3 which is unable to boot the
> > ttylinux image from sourceforge. I compiled xen, xen0, and xenU from
> > sources.
> >
> > I have attempted to boot the xenU kernel with / in a file and a logical
> > volume and get the same message either way.
> >
> > error message:
> >
> > VFS: Cannot open root device "sda1" or unknown-block(8,1)
> > Please append a correct "root=" boot option
> > Kernel panic - not syncing: VFS: Unable to mount root fs on
> > unknown-block(8,1)
> >
> > config file passed to "xm create ...":
> >
> > kernel = "/boot/vmlinuz-2.6.10-xenU"
> > memory = 64
> > name = "ttylinux"
> > nics = 1
> > #disk = [ 'phy:hdX_vg/ttylinux_lv,sda1,w' ]
> > disk = [ 'file:/root/ttylinux-xen,sda1,w' ]
> > root = "/dev/sda1 ro"
> > restart = "never"
> >
> > --
> > karl@xxxxxxxxxxxxxx
> >
> >
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