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Node panics due to Flash Cache failure

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Category:
ontap-9
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hw
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Applies to

  • ONTAP 9
  • Flash Cache

Issue

  • EMS log raise the following Flash Cache NVMe offline alert :

HA Group Notification (Flash Cache NVMe Offline) ALERT

  • SYSCONFIG -A show Flash Cache become failed status.

    slot 1: Flash Cache NVMe
        Serial Number:      ZEP0081C
        Part Number:        119-00329
        Hardware Revision:  A0
        Firmware Version:   NA03
        Model Name:         X3311A
        Capacity:           1024 GB
        State:              failed

  • Node panics with the following message and a takeover/giveback is performed automatically after Flash Cache offline:

Panic String: Freeing freed block: pvbn 0 vvbn 306417665 in volumename@vserver:9b465b44-5102-11e9-9bb1-00a098fcXXXX. WAFL inconsistent.Contact NetApp technical support. in SK process wafl_exempt01 on release 9.5(C)

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