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

["Andrey Vul" <andrey.vul@gmail.com>]

On Fri, Oct 10, 2008 at 10:33 PM, David Wei <davidwei@newbread.tj.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@gmail.com> wrote:
>
>> 2008/10/10 David Wei <davidwei@newbread.tj.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?