On Thu, 28 Nov 2002, Trond Myklebust wrote:
> >>>>> " " == Rasmus Bøg Hansen <moffe@amagerkollegiet.dk> writes:
>
> >> Does it also occur if you play around with setting rsize and
> >> wsize = 1024?
>
> > I'm afraid so - I just double-checked...
>
> Given that you are saying that even synchronous RPC (which is the
> default for r/wsize = 1024) is failing, then my 2 main suspicions are
>
> - hardware failure: Have you tried this on several different
> server/client combinations and hardware combinations?
Sigh:
Just tried reversing the process (ie. exchanging the client/server
role): No trouble at all, no errors in files.
I just tried turning off DMA on the server disk (this is just a low-end
IDE-system): No errors in files (compressing the file thrice).
So it does not at all seem to be a NFS-issue!
I have no idea what is wrong. If the disk, cable or IDE controller does
bit-flipping when DMA is turned on, why is the problem only seen with
NFS? I have never seem corrupted files or metadata with DMA turned
(except once long ago, when I experimented with high-transfer-modes - I
haven't done that since)...
Thanks for your help!
Regards
/Rasmus
(damn, PIO-mode performance sucks!)
-- -- [ Rasmus "Møffe" Bøg Hansen ] --------------------------------------- He who asks a question is a fool for five minutes; he who does not ask a question remains a fool forever. ----------------------------------[ moffe at amagerkollegiet dot dk ] --- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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