|Article Number: 531345||Article Version: 3||Article Type: Break Fix|
Dell EMC Unity Family
Unexpected SP reboot due to Bug Panic caused by a watchdog timer expiration
From spx/EMC/C4Core/log/c4_safe_native.log Search for:
CSX RT: panic requested at: KLogBugCheck.c:89 (thread: XXXXXXXXXXXXXXX aka XXXXXXXXXXXXXXX) [PID:XXXXX TID:XXXXX CORE:4 [csx_ic_std.x] [csx_tim_thr!] [MM/DD/YEAR HH:MM:SS UTC]] (panic action:DEFAULT expr:<no-expr> flags:-) [info:0]
The bugcheck was caused by a watchdog timer expiration. A timing window
when an I/O request is received while a relocation is completing allows
for cases where the timer is not properly canceled.
This Bug Panic can be triggered in either SP. The Issue is caused by a race condition between relocate slice and slice attributes integrity check.
To confirm the cause Escalate it to EE along with safe dump and support materials during SP Panic.
This bug is fixed in OE Code 4.5 Please upgrade Code