Re: strange sparc64 -> i586 intermittent but reproducible NFS write errors to one and only one fs

From: Nix (nix@esperi.demon.co.uk)
Date: Mon Feb 03 2003 - 12:35:03 EST


On Sun, 19 Jan 2003, Trond Myklebust said:
> It sounds rather strange that this particular patch should introduce
> an EIO, but here it is (fresh from BitKeeper)

... and indeed it doesn't.

The problem still exists in -pre9, but is very much rarer and harder to
replicate; I've sene it only half a dozen times in two weeks, in each
case during an ftp retrieval; I'm assuming there's something about the
write patterns used by ncftp (lots of few-KB appends, far apart in time)
that triggers it.

So it really is merely a timing change that has brought a pre-existing
problem into the light.

I'm going to try to come up with something that consistently reproduces
this as well, so I can track down the origins of this bug more
correctly.

-- 
2003-02-01: the day the STS died.
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