Takeover triggered by unexpected power loss in FAS8300 systems
Applies to
Issue
- Two unexpected system reboots were observed.
- During the first reboot, the system recovered, and Giveback was successful.
- During the first reboot, there is no obvious HW failure information or panic information in the BMC log.
- The controller reported a simultaneous loss of DC power from both power supplies (PSU1 and PSU2), causing the node to reboot automatically and triggering a takeover.
BMC console log
Entity Presence PSU1_VIN_TYPE_DC | Absent | Asserted
Entity Presence PSU2_VIN_TYPE_DC | Absent | Asserted
System Firmware Progress | Secondary CPU Initialization | Asserted
System Firmware Progress | USB resource configuration | Asserted
System Firmware Progress | PCI resource configuration | Asserted
System Firmware Progress | Video initialization | Asserted
System Firmware Progress | Keyboard controller initialization | Asserted
System Firmware Progress | Hard-disk initialization | Asserted
System Firmware Progress | Hard-disk initialization | Asserted
System Event | | Asserted
- During the second reboot, system failed to power on even after power cycle (
system power off/on). - System power status remained as "
Host power is off"
Commands issued via BMC (e.g.,system power on,system console) yielded no response.
BMC Log:
BMC > system power status
Host power is off
BMC > system power off
Current power is off, no action is taken
BMC system power status
Host power is off
BMC > system power on
BMC > system console
→Pressing the enter key gives no output.
BMC > system power status
Host power is off
BMC >