Sun T5240服务器ILOM缺失/SYS目标，无法引导操作系统求助

I’ve dealt with exactly this kind of issue on Sun/Oracle T-series servers before—missing /SYS in ILOM usually points to a hardware detection failure or ILOM firmware glitch. Here’s how to troubleshoot step by step:

1. Verify Power and Hardware Detection First #

The /SYS target represents the server’s main system hardware (motherboard, CPUs, memory, etc.). If ILOM doesn’t see it, start with the basics:

• Check physical power connections: Ensure both power supplies are plugged in, powered on, and the server’s front panel power button is pressed (if it’s a manual power-on model).
• Use ILOM CLI to check host power status: Run show /HOST—look for the power_state field. If it’s off, try powering it on with start /HOST.
• Check for power supply faults: Run show /SP/power/supplies to confirm all detected power supplies are in OK state.

2. Reset the ILOM SP to Fix Firmware Glitches #

Corrupted or stuck ILOM firmware often causes missing hardware targets. Try these resets:

• Soft reset first: From ILOM CLI, run reset /SP—this restarts the service processor without power cycling the entire server. Wait 5-10 minutes, then log back in to check for /SYS.
• Cold reset if needed: Unplug all power cables, wait 2-3 minutes to drain residual power, then plug them back in and power on. This clears deeper firmware state issues.

3. Check ILOM Logs for Hardware Errors #

If resets don’t work, there’s likely a hardware failure blocking detection. Dig into the logs:

• View event logs: Run show /SP/logs/event/list—look for entries about hardware detection failures, CPU/memory errors, or motherboard communication issues.
• Check fault management: Run show /SP/faultmgmt—this lists active hardware faults. Common culprits include faulty CPUs, bad DIMMs, or a failed motherboard.

4. Restore ILOM to Factory Defaults (Last Resort) #

If logs don’t show obvious hardware issues, a misconfigured ILOM might be hiding /SYS. First back up your config:

• Backup config: Run dump -destination tftp://[your-tftp-server-ip]/t5240-ilom-config.xml /SP/config
• Restore defaults: Run set /SP/config factory_defaults=true—confirm the prompt, wait for the SP to reset, then log back in to check for /SYS.

5. Re-flash ILOM Firmware (Advanced) #

If all else fails, the firmware itself might be corrupted. You can re-flash it even without /SYS:

• Download the latest compatible ILOM firmware for T5240 (you’ll need Oracle support access).
• Use CLI to load and upgrade: Run load -source tftp://[your-tftp-server-ip]/ilom-firmware.pkg followed by upgrade—follow on-screen prompts to complete the flash.

内容的提问来源于stack exchange，提问作者user426445