linux-kernel - Re: Mounting NFS root FS

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Date:	Thu, 7 Dec 2006 23:27:23 +0100
From:	Hans-Peter Jansen <hpj@...la.net>
To:	linux-kernel@...r.kernel.org
Cc:	"Janne Karhunen" <janne.karhunen@...il.com>, MrUmunhum@...dial.com
Subject: Re: Mounting NFS root FS

Am Montag, 4. Dezember 2006 12:51 schrieb Janne Karhunen:
> On 12/2/06, William Estrada <MrUmunhum@...dial.com> wrote:
> > Hi guys,
> >
> >   I have been trying to make FC5's kernel do a boot
> > with an NFS root file system.  I see the support is in the
> > kernel(?).
>
> Is this really properly possible (with read/write access and
> locking in place)? AFAIK NFS client lock state data seems
> to require persistent storage .. ?

Out of curiosity: what's the rational of mounting multiple diskless nodes on 
one rw nfs root filesystem [with locking in place]? 

In my experience, this results in a big mess. I depend heavily on diskless 
setups, where I spent significant time to provide sharing as much data as 
possible between the clients _without_ further interference. The best setup 
I found to get there is using unionfs (which still has issues, mostly due 
to missing/broken mmap support).

Pete
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