Re: [Ips] Data-In ExpDataSN
<Black_David@emc.com> Fri, 25 September 2009 14:44 UTC
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Date: Fri, 25 Sep 2009 10:43:44 -0400
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Thread-Topic: [Ips] Data-In ExpDataSN
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From: Black_David@emc.com
To: yusunn@gmail.com, ips@ietf.org
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> RFC 3720 says that Data-In/R2T PDU number is acknowledged by ExpDataSN
filed of SCSI Response
Where? Section 3.2.2.3 says:
Data and R2T PDUs are implicitly acknowledged by status for the
command.
> But if a target choose to send a Data-In PDU with S bit set instead of
a SCSI Response .
> Where to get the ExpDataSN ? There is no such a field in Data-In PDU.
Not by that name, but the information is present. The ExpDataSN
field in the SCSI Response PDU is "The number of R2T and Data-In
(read) PDUs the target has sent for the command." That number can
be obtained from a Data-In PDU whose S bit is set to 1 by adding 1
to the value of that PDU's DataSN field.
Thanks,
--David
________________________________
From: ips-bounces@ietf.org [mailto:ips-bounces@ietf.org] On
Behalf Of yushang
Sent: Friday, September 25, 2009 2:31 AM
To: ips@ietf.org
Subject: [Ips] Data-In ExpDataSN
Dear all , RFC 3720 says that Data-In/R2T PDU number is
acknowledged by ExpDataSN filed of SCSI Response . But if a target
choose to send a Data-In PDU with S bit set instead of a SCSI Response .
Where to get the ExpDataSN ? There is no such a field in Data-In PDU.
Many thanks.
- [Ips] Data-In ExpDataSN yushang
- Re: [Ips] Data-In ExpDataSN Black_David