Re: [gentoo-user] Howto erase the "Insert root floppy and press enter" item before the kernel panic?

[David Wei]

Thanks Andrey, that patch works , my test kernel dose not ask for the floppy before the panic. Just by the way,dose that mean I cannot use floppy drive on this box?

Thanks again!!

On Fri, 10 Oct 2008 23:06:09 -0400
"Andrey Vul" <andrey.vul@×××××.com> wrote:

> On Fri, Oct 10, 2008 at 10:33 PM, David Wei <davidwei@×××××××××××.cn> wrote:
> > Sorry, I forgot that file .
> > the .config is in the attachment this time.
> > Thank you .
> >
> > On Fri, 10 Oct 2008 10:05:36 -0400
> > "Andrey Vul" <andrey.vul@×××××.com> wrote:
> >
> >> 2008/10/10 David Wei <davidwei@×××××××××××.cn>:
> >> > Hi,
> >> > I am trying kexec with "kernel panic reboot" cause i have to manage my server remotely.
> >> > the "kernel panic reboot" (http://gentoo-wiki.com/TIP_Kernel_Panic_Reboot) has beening working so good so far for the regular kernel panic.However,sometimes when i were missed some file system items,the booking process would ask me:
> >> > "VFS: Unable to mount root fs via NFS,trying floppy
> >> > Insert root floppy and Press Enter."
> >> > And the system hungup there waiting for my Enter.
> >> > How can I remove this item from the booting process and panic directly so that it can reboot? Besides,I want to keep the NFS service.
> >> > Thank you in advance.
> >> I'm guessing that this is due to the floppy being compiled into the
> >> emergency kernel.
> >> In any case, can you post your .config for the emergency kernel?
> >>
>
> Nothing in the .config looks suspicious.
> It looks like it's inevitable that kernel patching will be needed, at
> least, using the preprocessor to "hide" the floppy code.
> Try this (it comments out floppy support which happens after NFS support):
> comment_floppy.patch
> --- init/do_mounts.c    2008-04-16 22:49:44.000000000 -0400
> +++ init/do_mounts2.c   2008-10-10 23:03:06.867876561 -0400
> @@ -308,7 +308,8 @@
>                 ROOT_DEV = Root_FD0;
>         }
>  #endif
> -#ifdef CONFIG_BLK_DEV_FD
> +/* #ifdef CONFIG_BLK_DEV_FD */
> +#if 0
>         if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR) {
>                 /* rd_doload is 2 for a dual initrd/ramload setup */
>                 if (rd_doload==2) {
>
> cd to your /usr/src/linux-... and run patch -p0 < comment_floppy.patch
> It should fix the _specific_ issue. It might not fix the root cause, however.
>
> --
> Andrey Vul
>
> A: Because it messes up the order in which people normally read text.
> Q: Why is top-posting such a bad thing?
> A: Top-posting.
> Q: What is the most annoying thing in e-mail?
>


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魏亮 David Wei

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