CLEAR TASK SET task management function
dougg at torque.net
Wed Feb 28 07:53:55 PST 2007
* From the T10 Reflector (t10 at t10.org), posted by:
* Douglas Gilbert <dougg at torque.net>
Rob Elliott wrote:
> Does any SCSI software other than test software actually use the CLEAR TASK
> SET task management function? CLEAR TASK SET clears tasks from all I_T
> If so, would that software be happy to use one of these instead?
> a) ABORT TASK SET - just clear tasks from the same I_T nexus; or
> b) LOGICAL UNIT RESET - clear tasks from all I_T nexuses and wipe out other
> state information
Poking around in Linux, I can see various low level
(i.e. hardware specific) drivers that have hooks for
a CLEAR TASK SET tmf call.
However there doesn't seem to be any use of that tmf
by higher level kernel drivers. That leaves low level
pass-throughs. I can see the lsiutil program for MPT
Fusion hardware allows that tmf to be issued.
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