From: Denis Vlasenko <vda@ilport.com.ua>
To: John Richard Moser <nigelenki@comcast.net>
Subject: Re: Keep initrd tasks running?
Date: Wed, 19 Oct 2005 14:07:26 +0300
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On Tuesday 18 October 2005 22:13, John Richard Moser wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> I have no idea who's the best to ask for this.
> 
> I want to start a task in an initrd and have it stay running after init
> is started.  Pretty much:
> 
> 
>  - kernel boot
>  - initrd loaded
>  - linuxrc executes
>  - /bin/mydaemon runs
>  - mount rootfs
>  - pivot_root
>  - exec /sbin/init (PID=1; linuxrc and sh is replaced)
>  - mydaemon keeps running, reparented under init, uninterrupted
> 
> 
> What's the feasibility of this without the system balking and vomiting
> chunks everywhere?  I'm pretty sure 'exec /sbin/init' from linuxrc
> (PID=1) will replace the process image of sh (linuxrc) with init,
> keeping PID=1; but I'm worried this may terminate children too.  Haven't
> tried.

It won't terminate children. Try it manually by booting with init=/bin/sh.
--
vda
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