From: "Day, Brian" <Brian.Day@lsi.com>
To: "Bill.Martin@emulex.com" <Bill.Martin@emulex.com>,
        "t10@t10.org"
	<t10@t10.org>
CC: "Elliott@hp.com" <Elliott@hp.com>
Date: Thu, 30 Oct 2008 09:43:49 -0600
Subject: RE: TRAIN_DONE issue
X-Message-Number: 9246
Formatted message: HTML-formatted message

Hi all...
I have posted 08-425 as an alternative suggested change to solve this race
condition.
Brian Day
LSI Corporation.
________________________________
From: owner-t10@t10.org [mailto:owner-t10@t10.org] On Behalf Of
Bill.Martin@emulex.com
Sent: Monday, October 27, 2008 11:29 AM
To: t10@t10.org
Cc: Elliott@hp.com
Subject: TRAIN_DONE issue
There is an issue of devices not coming out of the train done sequence
properly in the following case:
Device A and Device B begin transmitting the TRAIN pattern.
Device A locks on the TRAIN pattern and begins transmitting TRAIN_DONE
Device A completes sending 4 TRAIN_DONE patterns and continues sending
TRAIN_DONE patterns waiting for the TRAIN_DONE primitive to be received
Device A sends TRAIN_DONE primitive sequence and one of the dword of the
TRAIN_DONE pattern
Device B completes TRAIN and sends TRAIN_DONE
Device A detects TRAIN_DONE before completing the current TRAIN_DONE pattern
and exits the TRAIN SNW (not sending any more TRAIN_DONE primitives
Device B never detects TRAIN_DONE primitive from device A
Suggested change - device SHALL send one TRAIN_DONE pattern after detecting
TRAIN_DONE receives.
Bill Martin
Emulex
Office of Technology
Industry Standards
916 772-3658
916 765-6875 (Cell)
bill.martin@emulex.com