Sun SPARC Enterprise M3000/M4000/M5000/M8000/M9000 (OPL) Servers: "Fast Data Access MMU Miss" error along with BERR/BTO event during boot may be due to root file-system inconsistencies
(Doc ID 2149494.1)
Last updated on NOVEMBER 22, 2021
Applies to:Sun SPARC Enterprise M9000-64 Server - Version All Versions to All Versions [Release All Releases]
Sun SPARC Enterprise M4000 Server - Version All Versions and later
Sun SPARC Enterprise M5000 Server - Version All Versions and later
Sun SPARC Enterprise M3000 Server - Version All Versions and later
Sun SPARC Enterprise M8000 Server - Version All Versions and later
Information in this document applies to any platform.
On rare occasions, a root file-system inconsistency or partial corruption on OPL domains can avoid domain from booting, and generate errors during boot attempts that can be misleading and lead to unnecessary hardware replacement.
BERR and/or BTO events can be reported during boot even if no platform hardware is actually faulty.
No degraded or faulted HW should be marked by XSCF for this Document's solution to be applicable.
An example is reported below, collected on Domain 0 on a M4000 platform
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