using switch_root from initfamfs ( switch_root: error moving root)

[E Robertson]

On Tue, Apr 21, 2009 at 9:12 AM, Christian MICHON
<christian.michon at gmail.com> wrote:
> On Tue, Apr 21, 2009 at 4:05 PM, E Robertson <e.robertson.svg at gmail.com> wrote:
>> However, with just exec switch_root -c /dev/console /tmp/root
>>  or
>> exec switch_root  /tmp/root
>> I'm having problems mounting the root:
>> Kernel panic - not syncing: Attempted to kill init!
>>
>> The same filesystem I use for my Initramfs is the same file system I
>> used to change into so I don't think that's it.
>> Anyone has any ideas what I might be missing here? I've done this with
>> no problems before but only with mtd devices but not sure what I might
>> be doing wrong.
>> Thanks.
>
> you need a filesystem with a true /sbin/init if using linux-2.6.x+initramfs
>
> it's a mistake to believe a filesystem valid for initramfs will be a
> good candidate to switch_root into.
>
> you quite likely will have a /init in your initramfs and it'll be a
> shell script.
>
> in DetaolB (the link is in my signature), I use the initramfs /init to
> populate a mount point called /live.
> In this /live, I've a true linux system, where /sbin/init is a true
> init, not a shell script.
>
> my 2 last lines  in my initramfs /init is:
>
>
>
> --
> Christian
> --
> http://detaolb.sourceforge.net/, a linux distribution for Qemu with Git inside !

I do have a /sbin/init. That's the only change I made.