RE: SCSI Format/Copy CDB support

["Amir Shalit" <amir@astutenetworks.com>]

Julo,

 

I agree with you on (2).

 

Section 2.2.2.1 is saying:

"A numbered iSCSI request will not change its allocated CmdSN 
regardless of the number of times and circumstances in which it is 
reissued."

 

A long duration SCSI command may be aborted by a task management

command and than reissued by iSCSI with a stale CmdSN.

 

Amir 

-----Original Message-----
From: owner-ips@ece.cmu.edu [mailto:owner-ips@ece.cmu.edu]On Behalf Of Julian Satran
Sent: Friday, January 25, 2002 1:21 AM
To: Amir Shalit
Cc: ips@ece. cmu. edu (E-mail); owner-ips@ece.cmu.edu
Subject: Re: SCSI Format/Copy CDB support

Amir,

The draft says in several places that CmdSN is not important after the task gets to SCSI.
On 2 yes you might be right but that is purely an implementation issue. Format commands do not time-out
at SCSI level and iSCSI has no cause to e "nervous" - nothing is expected.


Julo

"Amir Shalit" <amir@astutenetworks.com> Sent by: owner-ips@ece.cmu.edu 25-01-02 02:10

To:        "ips@ece. cmu. edu \(E-mail\)" <ips@ece.cmu.edu>         cc:                 Subject:        SCSI Format/Copy CDB support

I see a few problems in implementing the format/copy commands over iSCSI
 
1) CmdSN may wrap between command and response (assuming multiple LUNs)
 
2) iSCSI keepalive NOPs may be required to keep the connection open during format