Re: [Q] simple question about a Task.

[Nafea Bishara <nafea@galileo.co.il>]

    Hi Kim

    if i understand your question correctly,  u are refering to a linked
commands:  the 3 CDBs belongs to the same task.  right ?
    in this case, the SAM-2 mandates that a single task can't have more
than one outstanding CDB.
    if u want to have multiple command on the fly, they ought to be from
multiple tasks, thus, with different initiator task tags

    regards

    -nafea

Kim Tae-Hyung wrote:

> Hi. I have a very basic question about iSCSI.
>
> I know A SCSI Task is a SCSI command or possibly a linked set of SCSI
> commands.  This means that one task may consist of several SCSI
> commands.
>
> And the "Initiator Task Tag" uniquely identifies the task in iSCSI.
>
> Here, let's assume that a task consists of three SCSI READ CDBs. And
> initiator sends three iSCSI SCSI Command(0x01) corresponding to each
> SCSI READ CDB. Three iSCSI SCSI command PDU MUST have same 'Initiator
> Task Tag'fields, because they belong to the same Task.
>
> And, some time later, a SCSI Data (READ) PDU arrived at initiator. How
> can the initiator know which SCSI Command this data PDU belongs to ?
> I cannot find any field in SCSI Data (READ) PDU which can make me
> happy.
>
> Thanks in advance.

--

             Nafea
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