Re: iscsi : default iscsi mode page settings.

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

I can sympathize with you wanting to use most of the parameters in iSCSI -
but the values are in fact restrictions that SCSI places on iSCSI.
Nevertheless the discussion is rather academic because SCSI can hand those
parameters to iSCSI.

SCSI can handle those parameters dynamically. iSCSI may have trouble
handling this type of negotiation dynamically over several connections.

Resource-wise (as Bob Snively has pointed out) those are SCSI issues.

A nice way out would be to ask T10 for a text mode negotiaton :-)

Julo


                                                                                           
                    Santosh Rao                                                            
                    <santoshr@cup.       To:     ips@ece.cmu.edu                           
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                    Sent by:             Subject:     Re: iscsi : default iscsi mode page  
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                    24-09-01 18:38                                                         
                    Please respond                                                         
                    to Santosh Rao                                                         
                                                                                           
                                                                                           




Julian,

The FirstBurstSize is an iscsi property and not an attribute of the scsi
ULP.
Evidence of this lies in its location itself, the disconnect-reconnect mode
page. This mode page is used to tune the parameters of the service delivery
subsystem (in our case, this would be iscsi).

I would like to re-iterate my request that FirstBurstSize be placed as a
login
key.

Regards,
Santosh


> -----Original Message-----
> From: Julian Satran [mailto:Julian_Satran@il.ibm.com]
> Sent: Friday, September 21, 2001 11:06 PM
> To: ips@ece.cmu.edu
> Subject: Re: iscsi : default iscsi mode page settings.
>
> That is not my reading of the map. The unsolicited payload buffer size is
a
> "data sink" attribute. The data sink is the SCSI engine and not the iSCSI
> layer.
>
> Julo
>
>
>
>                     Santosh Rao
>
>                     <santoshr@cup.       To:     ips@ece.cmu.edu
>
>                     hp.com>              cc:
>
>                     Sent by:             Subject:     Re: iscsi : default
> iscsi mode
>                     owner-ips@ece.        page settings.
>
>                     cmu.edu
>
>
>
>
>
>                     21-09-01 21:50
>
>                     Please respond
>
>                     to Santosh Rao
>
>
>
>
>
> Julian,
>
> The FirstBurstSize is governing an iscsi parameter which is : "how much
> un-solicited
> data can the initiator send" ? I concur with Charles' suggestion that
> FirstBurstSize be
> moved to a login key.
>
> By doing this, we can improve scan times, due to the elimination of the
> mode
> sense/select & avoid the side effects of shared mode pages. This allows
> easier use of
> un-solicited data.
>
> Regards,
> Santosh



#### santoshr.vcf has been removed from this note on September 24 2001 by
Julian Satran