[OpenAFS] file corruption redux
Wed, 31 May 2006 10:00:39 -0700
On Fri, May 26, 2006 at 03:25:59PM -0400, Derrick J Brashear wrote:
> On Fri, 26 May 2006, Miles Davis wrote:
> >I think I can get it to happen pretty regularly on several clients. It
> >seems to
> >be just this server, though...I'm still stumped. Another point of possible
> >interest -- I see no corruption if I go through an afs client on the server
> So is it possible that hardware is in some (non-disk-controller) way
> corrupting the transfers?
Sure, I suppose, but I can't think of what could do it -- cpu/cache? Magical
corrupting ethernet interface or driver (intel e1000)?
> It might be worthwhile to tcpdump -s (larger than mtu) -w (some file) host
> (a client you know will lose) and port 7000 and then given cmp -l output
> of the good and corrupt file perhaps we can see if there's garbage on the
OK, here we go: cmp -l aspell-bg-0.50-9.i386.rpm /tmp/aspell-bg-0.50-9.i386.rpm
1683429 377 177
(same from at least two clients)
tcpdump (4.4MB) file is at http://cs.stanford.edu/people/miles/tcpdump.out
Server is 188.8.131.52, client is 184.108.40.206.
// Miles Davis - email@example.com - http://www.cs.stanford.edu/~miles
// Computer Science Department - Computer Facilities
// Stanford University