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142 Chapter 7
Recovering from failures
System panics
Step 2. Record the panic message displayed on the system console. Look for text
on the console that contains terms like:
•System Panic
•HPMC
• Privilege Violation
• Data Segmentation Fault
• Instruction Segmentation Fault
Step 3. Categorize the panic message. The panic message describes why HP-UX
panicked. Sometimes panic messages refer to internal structures of HP-
UX (or its file systems) and the cause might not be obvious.
The wording of the panic message should allow the problem to be
classified into one of the following areas:
• Peripheral problem
• Server or I/O card problem
• File system problem
• LAN communication problem
• Logical Volume Manager (LVM) related problem
•Other
Peripheral problem
Use the following procedure to troubleshoot an apparent peripheral
hardware failure:
Step 1. Check to ensure the device is powered on and online.
WARNING Do not connect or disconnect cables or power off or on SCSI
devices while the V-Class server is powered on. Doing so could
lead to corruption of disk data.
Step 2. Check the device’s error display. If an error is displayed:
1. Record the error message or display.