Hello Martin

I added the rootdelay=20 on the cmdline and got the exact same results...

Now, I may not be using a "standard" setting. My bios does NOT allow me to
boot on the SCSI device, it just provides the driver. So, to boot, I use
kexec-loader or grub4dos.
Grub4dos point to the menu.lst... Please note that there is another
"special" when grub modifies the menu.lst it does NOT include an initrd line
extract from menu.lst
title        Debian GNU/Linux, rootdelay=20 kernel 2.6.30-2-686
root        (hd1,0)
kernel        /boot/vmlinuz-2.6.30-2-686 rootdelay=20 root=/dev/md0 ro quiet

This gives me a kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block (0,0)

title        Debian GNU/Linux, rootdelay=20,initrd kernel 2.6.30-2-686
root        (hd1,0)
kernel        /boot/vmlinuz-2.6.30-2-686 rootdelay=20 root=/dev/md0 ro quiet
initrd        /boot/initrd.img-2.6.30-2-686

I added an initrd line pointing to the generated initrd image.

this gives me: Alert! /dev/md0 does not exist. dropping to a shell!

If I use kexec-loader, the kexec-loader.conf reads:
title    2.6.30 Generic Linux System
root    sda1
kernel    /vmlinuz.30
cmdline rootdelay=20 root=/dev/md0 ro
initrd    /initrd.img.30

/vmlinuz.30 and /initrd.img.30 are symbolic link to the
/boot/xxx2.6.30.2.686

This gives me the same Alert! /dev/md0 does not exist. dropping to a shell!


I think that the raid drive is not known in the kernel, that the file needed
to describe the raid device is not available in the RAM drive...

Out of curiosity, what is exactly the rootdelay parameter for, if it is not
for waiting that the root device is ready for access?

Thanks for your interrest and regards.

Louis richard


2010/1/23 martin f krafft <madd...@debian.org>

> also sprach Louis Richard Pirlet <lrpir...@gmail.com> [2010.01.23.1002
> +1300]:
> > To your first question, the answer is : No I did not try the
> > rootdelay parameter. I am sure that the delay is big enough as
> > I have no time to wait at that point when booting from kernel
> > 2.6.26 and initrd.img-2.6.26-2.686
>
> Try setting rootdelay=20 and try again.
>
> --
>  .''`.   martin f. krafft <madd...@d.o>      Related projects:
> : :'  :  proud Debian developer               http://debiansystem.info
> `. `'`   
> http://people.debian.org/~madduck<http://people.debian.org/%7Emadduck>
> http://vcs-pkg.org
>  `-  Debian - when you have better things to do than fixing systems
>
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> but if we explore its paradoxes,
> we find that quicksand can work slowly.
>
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