From: Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua>
To: Trond Myklebust <trond.myklebust@fys.uio.no>,
       "Povolotsky, Alexander" <Alexander.Povolotsky@marconi.com>
Subject: Re: Linux 2.6.8-rc4 "Kernel panic: Attempted to kill init!" - af ter replacing /fadsroot on the Linux NFSserver with the one from Arabella cdrom
Date: Wed, 29 Sep 2004 23:53:29 +0300
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On Wednesday 29 September 2004 00:32, Trond Myklebust wrote:
> P? ty , 28/09/2004 klokka 23:14, skreiv Povolotsky, Alexander:
> > In my previous e-mail I forgot to mention that on the remote NFS Linux
> > (Intel PC) server I am running:
> > 
> > Red Hat Linux release 9 (Shrike)
> > Kernel 2.4.20-28.9 on an i686
> > 
> > I have another strange problem to report - related to NFS.
> > To work around my original problem (reported in my previous e-mail),
> > I am booting with ramdisk as root filesystem server and then trying to
> > manually mount the /fadsroot exported on the 
> > above described Linux NFS server - I am getting errors ( but mounting still
> > works) ...
> > 
> > Could anyone on this list determine (guess) what is the reason for errors
> > (see below) ?
> 
> You have to use the "-onolock" option if you are not running the
> rpc.portmap and rpc.statd daemons.

Or alternatively configure 127.0.0.1 on loopback and
start portmapper before you mount NFS. You can kill portmapper
before you pivot_root into "real" root dir.

>From /linuxrc on my initrd:

echo "# Configuring interfaces"
# Optional, for NFS happiness
ip l set dev lo up
ip a add 127.0.0.1/8 dev lo
...
rpc.portmap             # for statd (which is implicitly started by mount)
while true; do
    mount -n -o ro $ROOTFS /new_root \
    && break
    echo "mount -n -o ro $ROOTFS /new_root failed (err:$?)"; sleep 2
done
killall rpc.portmap     # portmap keeps old root busy
...
--
vda

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