CLEAR TASK SET task management function

Luben Tuikov ltuikov at
Wed Mar 14 01:05:36 PDT 2007

* From the T10 Reflector (t10 at, posted by:
* Luben Tuikov <ltuikov at>
--- "Elliott, Robert (Server Storage)" <Elliott at> 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
> nexuses.
No dependency here, although we may generate it as part of error recovery
escalation,  if the transport and device support it (i.e. if it is pertient).
> 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 
Yes, other than what others have noted.
(Those will be sent as part of error recovery escalation.)
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