Hi All, I'm understanding SAS architecture for adaptec controller. I'm using the source adp94xx for the same. I was able to understand all the infomation unit flow but i'm stuck with one problem. I was not able to trace when task management IU shall be invoked. Do i need any special app to test task management IU? Is SCSI layer responsible for invoking task management IU? Thanks. madhukar -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html