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CHW-1355: "ADR timeout" event reported after L2 watchdog reset

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Issue

  • An AFF A300 or FAS8200 system reports an "ADR timeout" event after a level 2 (L2) watchdog reset of the controller.

  • The following messages are seen on the system serial console:
    [Mon Dec 27 16:21:57 2021 [nv2flash.ADR.timeout:ERROR]:ADR(Asynchronous DRAM self-refresh) failed at Mon Dec 27 16:19:48 2021.]
    [Mon Dec 27 16:21:57 2021 [nv2flash.restage.progress:NOTICE]: ReStage is not needed because the flash has no data.]

  • The following events are seen in the system event log of the SP:
    [Record 392: Mon Dec 27 16:21:57 2021 [IPMI.critical]: ADR event ID: 0 at time: 1614397319]
    [Record 393: Mon Dec 27 16:21:57 2021 [IPMI.critical]: ADR Battery destage cycles: 19]
    [Record 394: Mon Dec 27 16:22:01 2021 [IPMI Event.critical]: NMI]
    [Record 395: Mon Dec 27 16:22:03 2021 [IPMI Event.critical]: L2 watchdog timeout hard reset]

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