Re: NFS client broken in Linus' tip

[Trond Myklebust]

On Sun, 2014-02-02 at 12:27 +0000, Russell King - ARM Linux wrote:
> 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.
> 
Hi Russell,

The following patch should fix the above problem. It needs to be applied
on top of the one I sent you previously. In addition, you will want to
apply Noah Massey's patch from
http://lkml.kernel.org/r/1391135472-9639-1-git-send-email-Noah.Massey@xxxxxxxxx 

Cheers,
  Trond

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