Re: [uml-devel] Error running UML

[Etay Meiri <etay.meiri@gmail.com>]

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I tries the following without success:

1. 'con=pts' instead of 'con=pty'.
2. 'con=xterm' instead of 'con=pty'.
3. added 'init=/bin/sh' to both of the above.
4. compiled the guest kernel again with 'make defconfig'.
5. moved away /lib/tls in the guest fs.

I'm still getting the same warning about the console. When I try
with xterm it just opens and immediately closes the xterm and
I don't have a chance to see what's there.

-Etay

On 9/30/05, Blaisorblade <blaisorblade@yahoo.it> wrote:
>
> On Friday 30 September 2005 13:12, Etay Meiri wrote:
> > Thanks for your response.
> >
> > I tried running it with a simple: ./vmlinux ubd0=root_fs.2005062201
> > and now it says:
> Well, the only option which *must* be dropped is root=/dev/ubd/0. The rest
> is
> harmless, and may help.
>
> Note that if you use con=pty rather than con=xterm, you'll need to connect
> to
> the consoles manually and look for them. Plus /dev/pty* are deprecated,
> and
> some host kernel don't support them any more.
>
> At least, using con=pts is more modern (it's supported on any recent
> kernel).
> > [42949373.420000] Console initialized on /dev/tty0
> > [42949373.420000] ubda: unknown partition table
> > [42949373.420000] kjournald starting. Commit interval 5 seconds
> > [42949373.420000] EXT3-fs: mounted filesystem with ordered data mode.
> > [42949373.420000] VFS: Mounted root (ext3 filesystem) readonly.
> > [42949373.420000] Warning: unable to open an initial console.
> This warning, normally, is harmless.
> > [42949373.420000] Kernel panic - not syncing: Attempted to kill init!
>
> > Looks like it mounted the root file system but has a problem opening
> > a console. Maybe I'm missing some console related option in the kernel
> > config?
> It's possible. I would first check also if init=/bin/sh makes it boot, to
> distinguish between fs problems and console problems. Also, remember to
> "mv /lib/tls /lib/tls.away" in the guest fs.
>
> Due to a bug in kconfig, which wasn't fixed because the fix wasn't nice,
> if
> you do "make *config ARCH=um" on an empty tree it may pick as default
> values
> from /boot/config-`uname -r`. To avoid this, you need to move away
> your .config and do:
>
> make defconfig ARCH=um
> and only afterwards, depending on your taste for configuration tool,
> make {menu,x,g}config ARCH=um
> i.e. either make menuconfig ARCH=um or the other similar ones.
> --
> Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
> Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ
> 215621894)
> http://www.user-mode-linux.org/~blaisorblade
>
>
>
>
>
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>


--
------------------------------------------------------
Etay Meiri
etay.meiri@gmail.com

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