SAS Expander Pathway Recovery

Gil Romo gil.romo at
Tue Sep 30 16:04:16 PDT 2003

* From the T10 Reflector (t10 at, posted by:
* Gil Romo <gil.romo at>
As shown in SAS1.1 Table 80, the pathway recovery priority of a request is 
determined from its pathway blocked count, source SAS address, and connection 
rate fields.

Can a single device (ie, source SAS address) create a deadlock with itself?

Blocking requests cannot have the same source SAS address.  Therefore, the 
connection rate field is not required for pathway recovery priority.

Gilbert Romo
Circuits & Integration
QLogic Corporation, Aliso Viejo, California
Office: 949-389-6266
E-mail: gil.romo at

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