linux-kernel - Re: 2.6.24-rc3-git4 NFS crossmnt regression

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Date:	Mon, 10 Dec 2007 14:51:46 -0500
From:	Shane <gnome42@...il.com>
To:	"Maxim Levitsky" <maximlevitsky@...il.com>
Cc:	"Neil Brown" <neilb@...e.de>, "Rafael J. Wysocki" <rjw@...k.pl>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Trond Myklebust" <trond.myklebust@....uio.no>,
	linux-kernel@...r.kernel.org, bfields@...ldses.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"Denis V. Lunev" <den@...nvz.org>, linux-nfs@...r.kernel.org
Subject: Re: 2.6.24-rc3-git4 NFS crossmnt regression

On Dec 10, 2007 9:19 AM, Maxim Levitsky <maximlevitsky@...il.com> wrote:
> ...
> > It is best not to use nohide - we should probably mark it as
> > 'legacy'.
> >
> > Simply export the top level mountpoint as 'crossmnt'  and everything
> > below there will be exported.
> >
> > > Where should I put those options in root file-system export or in submount export?
> >
> > crossmnt goes at the top.  nohide goes in the submount.  Both have
> > the same general effect though with subtle differences.
> > You don't need both (though that doesn't hurt).
> > Just use crossmnt at the top,  Then you don't need to mention the
> > lower level filesystems at all.
> >
> > >
> ...
> > > (I decided to switch to NFS4 only due to the lack of ability to see underlying mounts)
> > >
> >
> > All of this should work fine with v3.  Once you have the right patch
> > for the crossmnt bug applied, if you have further problems post them
> > to linux-nfs@...r.kernel.org.
> >
> > NeilBrown
> >
>
> Big thanks,
>
> Still NFS server just don't want to accept the connection
> I noticed that if I first mount with
> -tnfs, unmount,  and then mount with -tnfs4, it works
>
>
> Assuming that
> [PATCH 2.6.24-rc4] proc: Remove/Fix proc generic d_revalidate
> is the fix for crossmnt bug, I applied it to both client and server,
> but no luck.

I'm using NFSv3, but I applied two patches. The one you mention
from Eric and the patch Trond posted in this thread.

>
> Still see empty folders.

That was the symptom I had without Trond's patch.

Shane
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