On Wed, 12 Dec 2007 04:01:56 +0200 Maxim Levitsky <[email protected]> wrote:
> >
> > argh, this is getting bad.
> >
> > Can you please test the below patch asap? Against 2.6.24-rc4 or latest-linus.
> >
> >
> > From: Andrew Morton <[email protected]>
> >
> > Revert
> >
> > commit 2b1e300a9dfc3196ccddf6f1d74b91b7af55e416
> > Author: Eric W. Biederman <[email protected]>
> > Date: Sun Dec 2 00:33:17 2007 +1100
> >
>
> Hi,
>
> I finally solved this.
> There is no need to revert 2b1e300a9dfc3196ccddf6f1d74b91b7af55e416.
>
> It was actually a deadly mixture of 3 bugs:
>
> 1) Stale handles - Trond's patch fixes it, but I somehow missed it.
What is "Trond's patch" and where is it now?
> 2) Empty /proc/fs/nfsd (which causes nfs4 failures, and masks the bug #1, since with it the subfolders are just empty)
> [PATCH 2.6.24-rc4] proc: Remove/Fix proc generic d_revalidate fixes it
That patch was merged into Linus's tree just prior to 2.6.24-rc5.
> 3) And as I expected, a userspace bug, which believe me or not has exactly the same symptoms
> like #2 (and doesn't depend on others)
>
> It is a wrong boot script in BLFS that starts nfs daemons in wrong order.
> So there are 3 bugs and each masks the former one :-) .
>
> I revised boot script to use recommended order like in nfs-utils.
> And finally everything works....
>
Well... It's relatively common that insufficiently-robust userspace works
OK under kernel N and then stops working under kernel N+1. Even though the
fault lies with userspace, we prefer that it continues to work.
But it doesn't sounds like that'll be a concern here.
Thanks for the followup.
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