From mboxrd@z Thu Jan 1 00:00:00 1970 From: "J. Bruce Fields" Subject: Re: [NFS] NFS performance debugging Date: Fri, 27 Jun 2008 13:47:53 -0400 Message-ID: <20080627174753.GE18933@fieldses.org> References: <200806231659.58158@fortytwo.ch> <200806260819.35108@fortytwo.ch> <20080626170342.GB6961@fieldses.org> <200806270824.54066@fortytwo.ch> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: nfs@lists.sourceforge.net To: Adrian von Bidder Return-path: Received: from neil.brown.name ([220.233.11.133]:57106 "EHLO neil.brown.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752434AbYF0RsM (ORCPT ); Fri, 27 Jun 2008 13:48:12 -0400 Received: from brown by neil.brown.name with local (Exim 4.63) (envelope-from ) id 1KCI3N-00039o-Pp for linux-nfs@vger.kernel.org; Sat, 28 Jun 2008 03:48:09 +1000 In-Reply-To: <200806270824.54066-xzBkAS4TQxQfv37vnLkPlQ@public.gmane.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Fri, Jun 27, 2008 at 08:24:49AM +0200, Adrian von Bidder wrote: > On Thursday 26 June 2008 19.03:42 you wrote: > > On Thu, Jun 26, 2008 at 08:19:29AM +0200, Adrian von Bidder wrote: > > > On Wednesday 25 June 2008 18.56:58 J. Bruce Fields wrote: > > > > On Wed, Jun 25, 2008 at 09:02:42AM +0200, Adrian von Bidder wrote: > > > > > First tries showed > > > > > * There are no acl on my files now > > > > > > > > NFSv4 uses an entirely different type of ACL, for which you need > > > > different client-side tools; see > > > > > > I'm absolutely confused on the state of nfs4 acls. There are so many > > > old mailing list posts around that it's difficult to see what > > > information applies to the currentimplementation. So: are POSIX acls > > > in the server filesystem somehow mapped to nfsv4 acls on the client > > > side? I understand there understands an RFC proposal on how to do > > > this, and > > > http://wiki.linux-nfs.org/wiki/index.php/ACLs is very interesting but > > > doesn't really cover the current state of the implementation. > > > > I've attempted to update that wiki page to fix that problem; could you > > take a look and tell me whether the changes help? > > The summary is: "POSIX ACLs on the server side turn (more or less) into > NFSv4 ACL on the client.", correct? Yes (but note that that translation happens on the server). > So our current ACL based system of > permissions should work except that we can't modify permissions on the > client side until I've deployed nfs4 acl tools ... ACL's will definitely still be enforced correctly, yes--enforcement of permissions is entirely left up to the exported filesystem. > > > > http://www.citi.umich.edu/projects/nfsv4/linux/nfs4-acl-tools/ > > > > > > Hmm. Not packaged in Debian yet?????? ;-) So work to do for me if I > > > end up using nfs4 > > > > Yes. Volunteers to package those things welcomed.... > > ... which means you've possibly got your Debian packager, and I might even > be able to do that on company time. If you get a chance to work on that, that would be great. > Ok, I guess I know in which direction to put my work now, thanks a lot. > (nfs-iostat will be the first thing I'll try, though, to get some more > data.) Yes, that's probably best. (NFSv4 will be somewhat of a long shot, and in any case it'll help to first understand better where the time's going.) --b. ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ 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