Questions on SCSI Stream Commands

Banther, Michael michael.banther at hp.com
Thu Aug 12 02:04:59 PDT 2004


* From the T10 Reflector (t10 at t10.org), posted by:
* "Banther, Michael" <michael.banther at hp.com>
*
Hi Burn,

The answer to your first question is yes (see 3.1.34 and 3.1.38 of
SSC3r01a).

I don't agree with your list of Logical Objecxt Identifiers, however my
disagreement is small:

                              Logical Object
                              Identifier
	BOP			
	first logical block	0
	second logical block	1
	third logical block	2
	...
	Mth logical block		M - 1

	first filemark		M

	M+1th logical block	M + 1
	M+2th logical block	M + 2
	...
	M+Nth logical block	M + N

	second filemark		M + N + 1
	
Regards,
Michael Banther
Hewlett-Packard Company
Telephone +44 (117) 312 9503


-----Original Message-----
From: owner-t10 at t10.org [mailto:owner-t10 at t10.org] On Behalf Of Burn
Alting
Sent: Thursday, August 12, 2004 2:58 AM
To: t10 at t10.org
Subject: Questions on SCSI Stream Commands


* From the T10 Reflector (t10 at t10.org), posted by:
* Burn Alting <burn at goldweb.com.au>
*
Hi Peoples,

I've just finished reading the SCSI Stream Commands draft Rev 01a, dated
29 June 2004.

I have some questions.

Is a logical block a logical object?

If so, if I were to, at the start of a partition, write M logical
blocks,a filemark, then N logical blocks and finally a second filemark
would the logical object identifiers be as per this table?

                                Logical Object
                                Identifier
	BOP			
	first logical block	0
	second logical block	1
	third logical block	2
	...
	Mth logical block	M - 1

	first filemark		M

	M+1th logical block	M + 1
	M+2th logical block	M + 2
	...
	M+Nth logical block	M + N - 1

	second filemark		M + N
	

Thanks in advance.

Burn Alting


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