Re: Recovery Within Connection - Command Restart

["Julian Satran" <Julian_Satran@il.ibm.com>]

owner-ips@ece.cmu.edu wrote on 20-12-2001 00:06:44:

>  
> 
> 1. The draft says a) Requests not acknowledged for a long time….. 
> Does the SCSI timeout’s introduce the notion of time, or does iscsi 
> has to have timeout’s at the transport layer. Also for detecting 
> connection failures don’t the NOP’s have to be timed.
> 

Timeouts here are iSCSI timeouts - by the time SCSI timeouts it is too late

> 2. Request not acknowledged would be most of the time due to a 
> header digest errors at the target end. If the header is bad how 
> would one know at the target, that this was a command PDU v/s a Data
> PDU, since the target will have to implement a command scoreboard if
> it is a command PDU.
>

You won't know but initiator sees that ExpCmdSN is not advancing
 
> 3. Usage of Reject PDU talks about Reject on Command PDU : however 
> the error codes for Reject PDU do not indicate a command PDU error.

???
> 
> 4. Is the recovery R2T different from the usual R2T.
> 
>
No   
> 
> These things are not clear from the draft !
> 
> 
It is all in the eye of the reader :-)
We heard already complaints that the text is too bulky and has things that belong to a tutorial 
> 
> Shailesh Manjrekar.

Julo