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CONTAP-576697: Unmuted console might cause hardware reset and "no boot" during ONTAP upgrade

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Category:
ontap-9
Specialty:
core
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Issue

  • When console muting is disabled (typically only for debugging purposes), there might be instances during an upgrade where a very large amount of output concerning "core_scrub.c" is printed to the console.  
  • In this situation, a hardware reset can occur – preventing the system from booting until console muting is disabled.

Example:
core_scrub.c:134:Adding 0xfffff8053182a7f4:1536 for 0xffffffff89bfbe7a
core_scrub.c:311:Scrub range 0xfffff8053182af88:600 add for 0xffffffff89bfbe61

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