linux-kernel - Re: Mounting NFS root FS

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Message-Id: <200612042205.57577.Janne.Karhunen@gmail.com>
Date:	Mon, 4 Dec 2006 22:05:57 +0200
From:	Janne Karhunen <Janne.Karhunen@...il.com>
To:	Trond Myklebust <trond.myklebust@....uio.no>
Cc:	MrUmunhum@...dial.com, linux-kernel@...r.kernel.org
Subject: Re: Mounting NFS root FS

On Monday 04 December 2006 20:21, Trond Myklebust wrote:

> > > 2) NFS provides persistent storage.
> >
> > To me this sounds like a chicken and an egg problem. It
> > both depends and provides this at the same time :/. But
> > hey, if it's supposed to work then OK.
>
> ??? Locking depends on persistent storage, but persistent storage never
> depended on locking.

Except for the fact that to be able to mount anything RW you
generally _want_ to have locks. And can't have locks without 
the mount. Not that it wouldn't work, it's just that I would
not do it [for obvious reasons].


> 2) No. The problem of client crashes was fixed in NFSv4 with the
> addition of lease-based locks.

This was NFSv3 system, so that would still be an issue.


-- 
// Janne
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