CONTROL Mode Page - Which document should I read? spc-2 or scp-5?
Frederick.Knight at netapp.com
Tue Apr 21 13:29:35 PDT 2015
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From: owner-t10 at t10.org [mailto:owner-t10 at t10.org] On Behalf Of Felipe
Sent: Tuesday, April 21, 2015 10:08 AM
To: t10 at t10.org
Subject: CONTROL Mode Page - Which document should I read? spc-2 or scp-5?
Hi, I am new in SCSI commands, so I would like a help to see if I am
understanding well these messagens.
My first scenario is at windows and I am analyzing Mode Sense (6) messagens.
With wireshark I can see that the initiator (83) sends a message Mode
Sense(6) and the target (117) respond with a message Data In LUN (Mode Sense
(6) Respond Data) and after that there is another respond from the target
(117) Respond LUN (Mode Sense(6) Good), which means the target is responding
well to the initiator. I presume.... Is that right?
14724 38.244115000 10.0.1.83 50501 50501 iSCSI 10.0.1.117
iscsi-target 102 SCSI: Mode Sense(6) LUN: 0x00
14725 38.255535000 10.0.1.117 iscsi-target 3260 iSCSI
10.0.1.83 50501 126 SCSI: Data In LUN: 0x00 (Mode Sense(6)
14726 38.255616000 10.0.1.117 iscsi-target 3260 iSCSI
10.0.1.83 50501 102 SCSI: Response LUN: 0x00 (Mode Sense(6))
My second scenario is where I am trying to implement the code. I connect from
vmware initiator (61) ant it send a message Mode Sense(6) and the target does
not seem to respond. After that there is another message from the initiator
Read(10) LUN. Is the right?
43028 166.062627000 10.0.1.61 60209 60209 iSCSI
10.0.1.117 iscsi-target 114 SCSI: Mode Sense(6) LUN: 0x13
53657 194.869915000 10.0.1.61 25713 25713 iSCSI
10.0.1.117 iscsi-target 114 SCSI: Read(10) LUN: 0x13 (LBA:
0x00000000, Len: 1)
I am implementing the Mode Sense(6) - Control Mode Page as says spc5
http://www.t10.org/cgi-bin/ac.pl?t=f&f=spc5r03.pdf, but looking at wireshark
the SCSI CDB Mode Sense(6) says "..00 1010 = SPC-2 Page Code: Control (0x0a)"
SPC-2. I think it is why my implementation is not sending the correct message
to the initiator. Is that right?
looking at the t10.org<http://t10.org> I don't have access to this document
(http://www.t10.org/drafts.htm). If I am at the right path could please
anyone send to me this document?
And... if you have other tips that will help.
Thanks a lot.
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