Lustre devel - Feb 2007 - [Bug 11548] add lnet router traceability for debug purposes

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Created an attachment (id=9543)
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patch to print router NID on checksum failures

This patch adds a ''sender'' field to the LNET completion event
and the lustre
bulk descriptor.  This records the NID of the peer that the node received a
message from as well as the message initiator.	If they are different, then
''sender'' is the NID of the last router that forwarded the
message.

If ''sender'' != initiator.nid when a bulk checksum fails
(WRITEs on the server -

READs on the client), this patch includes "via <router NID>" in
the error
message so that the last router that forwarded the bulk data can be identified.


Please note that this patch has had minimal testing - I''ve checked that
''sender''
is being set correctly, but I''ve not forced checksum errors etc.