Date: Oct 08
Product & Version: All
OS Version: Sun Solaris (all versions)
Module & Version: N/A
Application version: N/A
Symptoms:
In order to identify issues with SCSI devices, you might be asked by Customer Support to reboot your machine to the ok prompt and issue the command "probe-scsi-all". In certain configurations, this can lead to the machine hanging.
Reason:
The Sun documentation states:
"Caution - If you used the halt command or the L1-A (Stop-A) key sequence to reach the ok prompt, then issuing the probe-scsi or probe-scsi-all command can hang the system."
The reason is that the system has not been physically rebooted before issuing the command if Stop-A or halt are used.
The safest way to get to the system console/ok prompt is to issue
sync; sync; init 0
Once the system reaches level 0 (bootprom), the system has not been restarted. In order to prevent the machine from hanging, you need to reboot and force the machine into the OK prompt afterwards. Therefore, turn off auto-boot and reboot:
setenv auto-boot? false
reset-all
You should get back to the ok prompt afterwards
You will be able to see the system restart and should get back to the ok prompt. Now you can issue the command:
probe-scsi-all
Take a note of the output.
Before you reboot your system, you must reset the auto-boot? variable to true:
setenv auto-boot? true
reset-all
