From: "J. Bruce Fields" Subject: Re: 2.6.24-rc3-git4 NFS crossmnt regression Date: Mon, 10 Dec 2007 10:47:47 -0500 Message-ID: <20071210154747.GB17209@fieldses.org> References: <200712101619.12522.maximlevitsky@gmail.com> <20071210143609.GF2138@fieldses.org> <200712101705.30428.maximlevitsky@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Neil Brown , "Rafael J. Wysocki" , Andrew Morton , Trond Myklebust , gnome42@gmail.com, linux-kernel@vger.kernel.org, "Eric W. Biederman" , "Denis V. Lunev" , linux-nfs@vger.kernel.org To: Maxim Levitsky Return-path: Received: from mail.fieldses.org ([66.93.2.214]:53914 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754447AbXLJPsN (ORCPT ); Mon, 10 Dec 2007 10:48:13 -0500 In-Reply-To: <200712101705.30428.maximlevitsky@gmail.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Mon, Dec 10, 2007 at 05:05:30PM +0200, Maxim Levitsky wrote: > On Monday 10 December 2007 16:36:09 J. Bruce Fields wrote: > > On Mon, Dec 10, 2007 at 04:19:12PM +0200, Maxim Levitsky 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-u79uwXL29TaiAVqoAR/hOA@public.gmane.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 > > > > OK, in that case, that's definitely the bug Eric sent out the patch for; > > you may want to try applying his patch. > You mean > "[PATCH 2.6.24-rc4] proc: Remove/Fix proc generic d_revalidate" ? > > I did apply it (on both kernel and server), and it doesn't help. > Best regards, > Maxim Levitsky > > PS: I am unfamiliar with nfs/nfs4, so this could be just a > configuration/compilation issue. What do ls /proc/fs/nfs ls /proc/fs/nfsd report? --b.