From: Douglas Gilbert <dgilbert@interlog.com>
To: yukta eswar <yukta.eswar@gmail.com>
Cc: linux-scsi@vger.kernel.org
Subject: Re: TASK Vs TASK_SET
Date: Tue, 19 Jan 2010 11:11:02 -0500 [thread overview]
Message-ID: <4B55D996.4000603@interlog.com> (raw)
In-Reply-To: <ac9fc6791001182248j3e523641i6c9d5a29dab088d2@mail.gmail.com>
yukta eswar wrote:
> Dear All,
>
> I am a newbie in SCSI task management.
> When I read the sam-4 document, I got confusion about TASK and TASK_SET.
> Can anyone let me know the difference.
I think George Penokie (SAM-5 editor) is going through the
SAM-5 (draft) and changing many usages of "TASK" to "COMMAND".
So a TASK is usually a single SCSI command that is being
processed by a logical unit. A TASK_SET is a set of SCSI
commands that are being processed by a logical unit at a point
of time.
Notice that a task management function like ABORT TASK
takes a I_T_L_Q nexus (identifying a command identifier within
a logical unit) while ABORT TASK SET takes a I_T_L nexus
(identifying a logical unit).
Doug Gilbert
prev parent reply other threads:[~2010-01-19 16:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-19 6:48 TASK Vs TASK_SET yukta eswar
2010-01-19 16:11 ` Douglas Gilbert [this message]
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