Return-Path: linux-nfs-owner@vger.kernel.org Received: from gw-1.arm.linux.org.uk ([78.32.30.217]:55219 "EHLO pandora.arm.linux.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751195AbaBBM2I (ORCPT ); Sun, 2 Feb 2014 07:28:08 -0500 Date: Sun, 2 Feb 2014 12:27:58 +0000 From: Russell King - ARM Linux To: Trond Myklebust Cc: linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org, Christoph Hellwig , Al Viro , Christoph Hellwig , linux-arm-kernel@lists.infradead.org Subject: Re: NFS client broken in Linus' tip Message-ID: <20140202122757.GC26684@n2100.arm.linux.org.uk> References: <20140130140834.GW15937@n2100.arm.linux.org.uk> <20140130141405.GA23985@infradead.org> <20140130142752.GX15937@n2100.arm.linux.org.uk> <20140130143208.GB9573@infradead.org> <20140130153812.GA15937@n2100.arm.linux.org.uk> <1391201970.6978.1.camel@leira.trondhjem.org> <20140201010328.GI15937@n2100.arm.linux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20140201010328.GI15937@n2100.arm.linux.org.uk> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Sat, Feb 01, 2014 at 01:03:28AM +0000, Russell King - ARM Linux wrote: > On Fri, Jan 31, 2014 at 03:59:30PM -0500, Trond Myklebust wrote: > > On Thu, 2014-01-30 at 15:38 +0000, Russell King - ARM Linux wrote: > > > On Thu, Jan 30, 2014 at 06:32:08AM -0800, Christoph Hellwig wrote: > > > > On Thu, Jan 30, 2014 at 02:27:52PM +0000, Russell King - ARM Linux wrote: > > > > > Yes and no. I still end up with an empty /etc/mtab, but the file now > > > > > exists. However, I can create and echo data into /etc/mtab, but it seems > > > > > that can't happen at boot time. > > > > > > > > Odd. Can you disable CONFIG_NFSD_V3_ACL for now to isolate the issue? > > > > > > Unfortunately, that results in some problem at boot time, which > > > ultimately ends up with the other three CPUs being stopped, and > > > hence the original reason scrolls off the screen before it can be > > > read... even at 1920p. > > > > > Hi Russell, > > > > The following patch fixes the issue for me. > > It doesn't entirely fix the issue for me, instead we've got even weirder > behaviour: > > root@cubox-i4:~# ls -al test > ls: cannot access test: No such file or directory > root@cubox-i4:~# touch test > root@cubox-i4:~# ls -al test > -rw-r--r-- 1 root root 0 Feb 1 01:01 test > root@cubox-i4:~# echo foo > test > root@cubox-i4:~# ls -al test > -rw-r--r-- 1 root root 4 Feb 1 01:01 test > root@cubox-i4:~# cat test > foo > root@cubox-i4:~# rm test > root@cubox-i4:~# echo foo > test > -bash: test: Operation not supported > root@cubox-i4:~# ls -al test > -rw-r--r-- 1 root root 0 Feb 1 01:01 test FYI, I just tested Linus' tip, and NFS is still broken. -- FTTC broadband for 0.8mile line: 5.8Mbps down 500kbps up. Estimation in database were 13.1 to 19Mbit for a good line, about 7.5+ for a bad. Estimate before purchase was "up to 13.2Mbit".