Re: nfs + Reiser4

["J. Bruce Fields" <bfields@fieldses.org>]

On Thu, Apr 08, 2010 at 12:44:38AM +0200, Bernd Schubert wrote:
> On Tuesday 06 April 2010, gg@catking.net wrote:
> > Hi,
> > 
> > I am having serious headaches using nfs between a reiser4 server and arm
> > client.
> > Both on 2.6.29 vintage kernels.
> > 
> > Files are constantly getting out of sync.
> > 
> > Example :
> > 
> > boot ARM via nfs
> > edit lighttpd.conf on ARM
> > check edit is visible on server. OK
> > 
> > reboot ARM
> > check file : reverted to an earlier state.
> > check server: edited version still showing.
> > 
> > 
> > This is just one example of serious userablity issues. I have also seen a
> > revert 10s later reopening the same file on the ARM.
> > 
> > Is this possibly related to R4 + nfs ?
> 
> Reminds me about an old bug report I wrote and which nobody ever cared about:
> 
> http://article.gmane.org/gmane.linux.nfs/9867/match=

On a possibly-too-quick skim, I think this could be explained by just
stale cache data, possibly the result of poor ext3 time resolution.
(Still a bug of some kind, but not as bizarre as the bug reported here.)

--b.

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