Re: [uml-devel] Error running UML

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

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Seems like the root fs I was using was not UML ready and needed
quite a lot of work. I followed the instructions in:
http://uml.harlowhill.com/index.php/UML_Fedora_Core_4
and was able to get it up and running.

Thanks for you help, Blaisorblade.

-Etay

On 9/30/05, Etay Meiri <etay.meiri@gmail.com> wrote:
>
> 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<http://www.user-mode-linux.org/%7Eblaisorblade>
> >
> >
> >
> >
> >
> > ___________________________________
> > Yahoo! Mail: gratis 1GB per i messaggi e allegati da 10MB
> > http://mail.yahoo.it
> >
> >
>
>
> --
> ------------------------------------------------------
> Etay Meiri
> etay.meiri@gmail.com
>



--
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Etay Meiri
etay.meiri@gmail.com

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