Return-Path: Received: from mx2.parallels.com ([64.131.90.16]:58056 "EHLO mx2.parallels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751243Ab0L3JYW (ORCPT ); Thu, 30 Dec 2010 04:24:22 -0500 Message-ID: <4D1C4C7C.6050606@parallels.com> Date: Thu, 30 Dec 2010 03:10:20 -0600 From: Rob Landley To: "Kirill A. Shutemov" CC: Rob Landley , Trond Myklebust , "J. Bruce Fields" , Neil Brown , Pavel Emelyanov , , "David S. Miller" , , Subject: Re: [PATCH v2 00/12] make rpc_pipefs be mountable multiple time References: <1293628470-28386-1-git-send-email-kas@openvz.org> <20101230085139.GA29697@shutemov.name> In-Reply-To: <20101230085139.GA29697@shutemov.name> Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Sender: linux-nfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 On 12/30/2010 02:51 AM, Kirill A. Shutemov wrote: > On Wed, Dec 29, 2010 at 08:13:50PM -0600, Rob Landley wrote: >> On Wed, Dec 29, 2010 at 7:14 AM, Kirill A. Shutemov wrote: >>> >>> Prepare nfs/sunrpc stack to use multiple instances of rpc_pipefs. >>> Only for client for now. >> >> What would a test case for this look like? (Is there some way to tell >> an nfs mount to use a specific instance of rpc_pipefs or something?) > > You can create a new instance of rpc_pipefs using 'newinstance' > mountoption. > > Then you can specify which rpc_pipefs to use with 'rpcmount' mountoption > of nfs mount. If none specifed, '/var/lib/nfs/rpc_pipefs' uses by default. That path is as the process performing the mount sees it? > If no rpcmount mountoption, no rpc_pipefs was found at > '/var/lib/nfs/rpc_pipefs' and we are in init's mount namespace, we use > init_rpc_pipefs. It's the "we are in init's mount namespace" that I was wondering about. So if I naievely chroot, nfs mount stops working the way it did before I chrooted unless I do an extra setup step? I'm actually poking at getting nfs mount working in LXC containers with different network routing (mostly study so far, it took me a couple weeks just to get lxc to work for me and now I'm trying to wrap my head around Linux's NFS implementation), so I'm very interested in this... Rob