Fail in DTM task "detect if device is boot/page parent adaptor" while CHAOS testing

Hi All,

while performing DTM CHAOS test, we got failure in some tasks in the sub job Pnpdtest with concurrent IO in parallel with DevPathExer.

Task: “STORAGE: Detect if device is a boot/page parent adapter”
error code : Hresult=“0x8201aeac”

Task:“Run Pnpdtest”
TaskResultStatus=“Cancelled”

Task: “Run pwrtest”
<taskresult taskresultstatus=“Failed” processexitstatus=“-2147220479” …>
<error failure="Failed to determine Pass/Failure of the task " run pwrtest task will be marked as failed anyway. …>

Task : “Run DevPathExer”


There is a similar topic :
http://social.msdn.microsoft.com/Forums/zh-TW/1295/thread/a2b6d876-1272-48b4-9376-c0b02cd77831/

Any suggestion will be very appreciated.

Tao,