RE: SCSI command order issue

["Wang Yong Hong, Wilson" <dsiyhw@dsi.nus.edu.sg>]

Hello Pat,

Thanks all the fellows for the reply. 

Does that mean it is safe for iSCSI and other network related protocols that do not provide 
SCSI command order control, as we assume the higher layer (or Operating System) may 
take the responsibility to control the order issue ?

Thanks 

Wilson

>>> <pat_thaler@agilent.com> 02/26/02 04:13AM >>>
Wilson,

That is the way the SCSI protocol is defined by T10 so this isn't an IETF
issue.

Regards,
Pat

-----Original Message-----
From: Wang Yong Hong, Wilson [mailto:dsiyhw@dsi.nus.edu.sg] 
Sent: Sunday, February 24, 2002 3:54 AM
To: ips@ece.cmu.edu 
Subject: SCSI command order issue 


Hello,

Here I ask one question about SCSI protocol. 

I traced the linux kernel source code about SCSI module. 

In SCSI module, every SCSI command block is assigned 
one unique serial number. However this number is only 
valid before the block is returned to the SCSI middle layer.

There is no mechanism of sequence control for SCSI.
What is your opinion about the SCSI block out of order 
when they return to upper layer ? What do your people 
think about this ?

Thanks 

Wilson