Problem with 10-325r6

Penokie, George George.Penokie at lsi.com
Tue Nov 16 08:57:21 PST 2010


* From the T10 Reflector (t10 at t10.org), posted by:
* "Penokie, George" <George.Penokie at lsi.com>
*
I have posted 10-384 that addresses this issue and another one.
Bye for now, 
George Penokie
LSI Corporation 
3033 41st St. NW 
Suite 100 
Rochester, MN 55901
507-328-9017 
george.penokie at lsi.com
-----Original Message-----
From: david.black at emc.com [mailto:david.black at emc.com] 
Sent: Tuesday, November 16, 2010 10:01 AM
To: Penokie, George; t10 at t10.org
Cc: Bill.Martin at emulex.com; david.black at emc.com
Subject: RE: Problem with 10-325r6 
For now, "user data storage" -> "storing user data" in my rewrite, and we can
figure out the right fix in CAP discussion of your proposal.
Thanks,
--David
> -----Original Message-----
> From: Penokie, George [mailto:George.Penokie at lsi.com]
> Sent: Tuesday, November 16, 2010 9:13 AM
> To: Black, David; t10 at t10.org
> Cc: Bill.Martin at emulex.com
> Subject: RE: Problem with 10-325r6
> 
> David,
> 
> The concept of "storage" is not in SAM. So you suggested rewrite still does
not cut it. However, I see
> no problem with deleting item b) altogether.
> 
> I will write a proposal to do that.
> 
> Bye for now,
> George Penokie
> 
> LSI Corporation
> 3033 41st St. NW
> Suite 100
> Rochester, MN 55901
> 
> 507-328-9017
> george.penokie at lsi.com
> 
> -----Original Message-----
> From: david.black at emc.com [mailto:david.black at emc.com]
> Sent: Monday, November 15, 2010 6:18 PM
> To: Penokie, George; t10 at t10.org
> Cc: Bill.Martin at emulex.com; david.black at emc.com
> Subject: RE: Problem with 10-356r6
> 
> George,
> 
> To begin with, the proposal involved is actually 10-325r6.
> 
> The suggested rewrite breaks a key aspect of 10-325 - the intent has always
been to allow I/O to data
> when the amount of data involved is small (e.g., an older version of 10-325
referred to "a capacity
> that is too small for most practical uses").	Therefore the suggested
rewrite is not acceptable.
> 
> An acceptable rewrite would be:
> 
>	b) shall not support access to user data (see SPC-4) for the purpose
of user data storage; and
> 
> While I'm somewhat uncomfortable with this after-the-fact revision, an
alternative approach of
> deleting item b) might also solve the problem, as that would result in
sweeping "access to user data"
> under the proverbial "carpet" of item c):
> 
>	c) may support other features only for the purposes of device
management.
> 
> thereby avoiding the temptation of viewing the "for the purpose of"
language in the rewritten item b)
> as superfluous.
> 
> Thanks,
> --David
> 
> > -----Original Message-----
> > From: owner-t10 at t10.org [mailto:owner-t10 at t10.org] On Behalf Of Penokie,
George
> > Sent: Monday, November 15, 2010 5:55 PM
> > To: T10 Reflector (t10 at t10.org)
> > Cc: Black, David; Bill.Martin at Emulex.Com
> > Subject: Problem with 10-356r6
> >
> > * From the T10 Reflector (t10 at t10.org), posted by:
> > * "Penokie, George" <George.Penokie at lsi.com>
> > *
> > In the process of incorporating 10-356r6 (SAM-5 and FCP-4: Management
Logical Units) I have
> > encountered a problem that needs attention.
> >
> > In the proposal the following statement is intended to describe what a
management logical unit does:
> >
> > A management logical unit:
> > a) shall support access to management functionality;
> > b) shall not support access to stored data for the purpose of general
data storage; and
> > c) may support other features only for the purposes of device management.
> >
> > The problem is that item be uses terms (specifically: stored data and
general data storage) that are
> > not defined in SAM (or anywhere else in the SCSI standards). That has to
be resolved. I suggest item
> > b) be rewritten as:
> >
> > b) shall not manage I/O requests that require access to user data (see
SPC-4); and
> >
> > A new revision of SAM-5 is on hold until this is resolved.
> >
> > Bye for now,
> > George Penokie
> >
> > LSI Corporation
> > 3033 41st St. NW
> > Suite 100
> > Rochester, MN 55901
> >
> > 507-328-9017
> > george.penokie at lsi.com
> >
> >
> >
> > *
> > * For T10 Reflector information, send a message with
> > * 'info t10' (no quotes) in the message body to majordomo at t10.org
> 
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