From: "J. Bruce Fields" Subject: Re: [NFS] export dir thru 2 diff path names Date: Sun, 16 Nov 2008 15:04:23 -0500 Message-ID: <20081116200423.GL21551@fieldses.org> References: <491869F0.1000505@bnl.gov> <620E93B2E5CC3B46BD811165E3335B8702F374A0@0461-its-exmb02.us.saic.com> <491882AB.6070908@bnl.gov> <620E93B2E5CC3B46BD811165E3335B8702F37542@0461-its-exmb02.us.saic.com> <4918859C.6080608@bnl.gov> <620E93B2E5CC3B46BD811165E3335B8702F3759D@0461-its-exmb02.us.saic.com> <20081110192820.GC19053@fieldses.org> <20081110204443.GK19053@fieldses.org> <620E93B2E5CC3B46BD811165E3335B8702FD3423@0461-its-exmb02.us.saic.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: Chuck Lever , nfs@lists.sourceforge.net, Sev Binello To: "Murata, Dennis" Return-path: Received: from neil.brown.name ([220.233.11.133]:47804 "EHLO neil.brown.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751366AbYKPUFw (ORCPT ); Sun, 16 Nov 2008 15:05:52 -0500 Received: from brown by neil.brown.name with local (Exim 4.69) (envelope-from ) id 1L1nsU-0007hF-4f for linux-nfs@vger.kernel.org; Mon, 17 Nov 2008 07:05:50 +1100 In-Reply-To: <620E93B2E5CC3B46BD811165E3335B8702FD3423-9/h0XwadXgnyjpQT3Si/rsM9+qvyE0V4QQ4Iyu8u01E@public.gmane.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Wed, Nov 12, 2008 at 10:04:30AM -0800, Murata, Dennis wrote: > One last question for the maintainers and the community. Is this viewed > as an undocumented feature or a bug to be fixed? By "this" you mean mountd's current practice of following symlinks in export points? If people are using it (and I can't imagine you're the only ones to try), then I think we should make it a point to keep it around. Patches to the documentation (probably the exports man page, kept in the nfs-utils code) welcomed. --b. > I would hate to > recommend use of the exported link, only to have it disabled by an > updated patch. > > Wayne > > > -----Original Message----- > > From: J. Bruce Fields [mailto:bfields@fieldses.org] > > Sent: Monday, November 10, 2008 2:45 PM > > To: Chuck Lever > > Cc: Murata, Dennis; nfs@lists.sourceforge.net; Sev Binello > > Subject: Re: [NFS] export dir thru 2 diff path names > > > > On Mon, Nov 10, 2008 at 03:20:42PM -0500, Chuck Lever wrote: > > > On Nov 10, 2008, at Nov 10, 2008, 2:28 PM, J. Bruce Fields wrote: > > >> On Mon, Nov 10, 2008 at 11:28:04AM -0800, Murata, Dennis wrote: > > >>> That really is the 64K question. During my initial testing, I > > >>> exported the parent directory. Now I am explicitly exporting the > > >>> installation directories, where I see the exportfs > > message. In the > > >>> messages log file on the server the mount request from > > the client is > > >>> always the actual directory. > > >> > > >> I don't see how this would be "unsafe"--if it works, go for it. > > >> > > >> One potential trap: it's using the same client list and export > > >> options for both, so if you think you can make one of them > > read-only > > >> and one of them writeable, for example, you'll be disapointed. > > > > > > I wonder how this behaves on the client side. If the same client > > > mounts both paths, will it recognize that these are the > > same and use a > > > shared page cache for both? > > > > Yeah, who knows. I suspect it assumes they're different if > > the mount paths are different. > > > > But for most people's purposes it probably doesn't matter > > much. (For the purposes people have mentioned so far they > > don't even need to mount both paths from the same client at once.) > > > > --b. > > > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > NFS maillist - NFS@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/nfs > _______________________________________________ > Please note that nfs@lists.sourceforge.net is being discontinued. > Please subscribe to linux-nfs@vger.kernel.org instead. > http://vger.kernel.org/vger-lists.html#linux-nfs > > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs _______________________________________________ Please note that nfs@lists.sourceforge.net is being discontinued. 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