Inconsistency in power condition overview in SPC-4

Penokie, George George.Penokie at lsi.com
Mon Aug 31 06:11:01 PDT 2009


Formatted message: <a href="http://www.t10.org/cgi-bin/ac.pl?t=r&f=r0908311_f.htm">HTML-formatted message</a>

There is no question in my mind as to the intent. The intent was that the
REQUEST SENSE command would have no effect on any of the power condition
timers.
Bye for now,
George Penokie
LSI Corporation
3033 41st St. NW
Suite 100
Rochester, MN 55901
507-328-9017
george.penokie at lsi.com
From: owner-t10 at t10.org [mailto:owner-t10 at t10.org] On Behalf Of Mark Evans
Sent: Friday, August 28, 2009 5:16 PM
To: t10 at t10.org
Cc: Ralph Weber
Subject: Inconsistency in power condition overview in SPC-4
Hello,
I've discovered an inconsistency in SPC-4 regarding power conditions.  The
sixth paragraph in 5.10.1 Power conditions overview reads, "If any power
condition timer in the Power Condition mode page is enabled, then that timer
shall be stopped on receipt of a command. On completion of the command, all
enabled timers shall be reinitialized based on their Power Condition mode
page values and then started."
However, in clause 6.29 REQUEST SENSE command there is a sentence that reads,
"A REQUEST SENSE command shall not reset any power condition timers."
I think the description in the REQUEST SENSE command is correct and that the
paragraph in 5.10.1 should be changed to read, "If any power condition timer
in the Power Condition mode page is enabled, then that timer shall be stopped
on receipt of a command, except a REQUEST SENSE command.  On completion of
the command, all enabled timers shall be reinitialized based on their Power
Condition mode page values and then started."
I think this could be an editorial change, as this was the intent all along.
Please feel free to call or send an email to me with any comments or
questions that you have about this stuff.
Regards,
Mark Evans
Western Digital Corporation
5863 Rue Ferrari
San Jose, CA 95138
Email: mark.evans at wdc.com



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