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CONTAP-301255: Integer Overflow causes delayed scheduling of critical operations

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Issue

The symptoms include and not limited to:

  • Long CP durations or Back-to-Back CP
  • High I/O latency / significant client access delays
  • Reboot unexpectedly if the consistency point hits a timeout of ten minutes or more with a similar error message:

WAFL hung for sfo_aggrB2 with CP timeout value 120 in SK process wafl_exempt09 on release R9.15.1 on Tue Aug 27 12:23:34 CDT 2024

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