On Thu, 21 Oct 2004 13:37:52 -0700
Stephen Hemminger <shemminger@xxxxxxxx> wrote:
> Summary: kernel-2.6.9 breaks Amanda
Unfortunately, he failed to show the tcpdump traces of the UDP
traffic as he did in his lkml postings. There you will find
checksum errors mentioned in the tcpdump output for the last
few consequetive UDP packets and I think that is a good clue
as to what may be the problem here.
I have to trust that the user did try, as Andrew Morton suggested,
the 2.6.8.1 3c59x driver copied into the 2.6.9 kernel. He said
the problem persists.
He also states he disabled netfilter (although I would have liked
him to also make sure that no netfilter modules were loaded as well).
That basically leaves us with ipv4/udp changes to look at. There
are two potentially problem causing changesets. That would be:
ChangeSet 1.1832.88.1 2004/09/13 20:05:28 acme@xxxxxxxxxxxxxxxx
and
ChangeSet 1.1803.16.6 2004/07/21 13:51:01 Samuel.Thibault@xxxxxxxxxxx
I'm mostly suspicious of the latter, because it changes the
behvaior of UDP sockets when MSG_TRUNC is specified. Can
someone check if Amanda uses MSG_TRUNC on UDP sockets?
If the bug reporter had provided an strace of the Amanda userland
components, we'd know this already.
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