Messages in this thread | | | Date | Tue, 16 Nov 2010 23:28:53 +0300 | From | Vladislav Bolkhovitin <> | Subject | Re: SCSI TMF processing; tag allocation |
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Matthew Wilcox, on 11/13/2010 03:37 PM wrote: > SPC-4 seems to indicate (in the INQUIRY command, 6.4.2) that support > for queueing is now non-optional, and even support for basic queueing > has been removed, replaced only with the 'command management model'. > I must confess to being somewhat confused by the difference between the > 'basic queue' model and 'command management' model
The 'command management model' is what was called 'full task management model' in SAM-3. The difference of it with 'basic task management model' in SAM-3 is that (basically) in the latter:
- Support only for SIMPLE or ORDERED commands (not both)
- For SIMPLE commands their reorder can't be controlled
- On any error all queued commands must be aborted and this behavior can't be controlled.
Vlad
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