CHW-1103：センサー読み取り不能によるPSU degradedアラート

問題

 
AFF-A250システムでは、CHASSIS POWER SUPPLY DEGRADEDおよびCHASSIS OVERが報告されることがあります。
パートナー ノードは PSU を正常として報告しますが、温度アラートが発生します。
これは、EMS ログに PSU センサーが読み取り不能であることが示されている場合でも発生します。
 
EMS log:
env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 1 is degraded: PSU1 Inlet is Unreadable
env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 1 is degraded: PSU1 Hot is Unreadable
env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 1 is degraded: PSU1 FB Hot is Unreadable
env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 1 is degraded: PSU1 Fan is Unreadable
env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 2 is degraded: PSU2 Inlet is Unreadable
env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 2 is degraded: PSU2 Hot is Unreadable
env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 2 is degraded: PSU2 FB Hot is Unreadable
env_mgr: monitor.chassisPowerSupply.degraded:notice]: Chassis power supply 2 is degraded: PSU2 Fan is Unreadable
power_low_monitor: monitor.chassisPower.degraded:alert]: Chassis power is degraded: Power Supply Status Critical: PSU2, PSU1.
power_low_monitor: callhome.chassis.power:error]: Call home for CHASSIS POWER DEGRADED: Power Supply Status Critical: PSU2, PSU1.
env_mgr: monitor.temp.unreadable:error]: The controller temperature (PSU1 Inlet) is not readable.
env_mgr: monitor.temp.unreadable:error]: The controller temperature (PSU1 Hot) is not readable.
env_mgr: monitor.temp.unreadable:error]: The controller temperature (PSU1 FB Hot) is not readable.
env_mgr: monitor.temp.unreadable:error]: The controller temperature (PSU2 Inlet) is not readable.
env_mgr: monitor.temp.unreadable:error]: The controller temperature (PSU2 Hot) is not readable.
env_mgr: monitor.temp.unreadable:error]: The controller temperature (PSU2 FB Hot) is not readable.
env_mgr: callhome.chassis.hitemp:error]: Call home for CHASSIS OVER TEMPERATURE
PLATFORM-SENSORS.XML
PSU1     fru     failed             failed
PSU2     fru     failed             failed