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Panic "NVMEM must start in battery backed region" on AFF A800

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aff-series
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hw
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Applies to

  • AFF A800
  • AFF C800

Issue

  • During reboot (such as after a takeover or sync core), node continues to panic in boot loop:

PANIC : NVMEM must start in battery backed region, start: 0x9470000000 battery backed start: 0x9870000000

  • Additional DIMM mapped out errors in console logs prior to first panic show a mapped out NVMEM DIMM:

DIMM:11 mapped out. BIOS MRC mapped out DIMM. Major Code 0x0A Minor Code 0x03
DIMM:11 mapped out. BIOS MRC mapped out DIMM. Major Code 0x14 Minor Code 0x02
DIMM:11 mapped out. BIOS MRC mapped out DIMM. Major Code 0x14 Minor Code 0x02
DIMM:11 mapped out. BIOS MRC mapped out DIMM. Major Code 0x14 Minor Code 0x02

 

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