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Debug the resource
You can access I/O debug from the packaging and logical displays.
From packaging displays
The I/O debug option is available only on the logical hardware resources displays. To access I/O debug from the packaging displays, you must select the Associated logical resource(s) option. For details, see Display associated resources.
From logical displays
The I/O debug option is available only on the logical hardware resources displays. This option assists in debugging selected resources.
Attention: Misuse
of this option might cause a system software failure.
The
I/O Debug display shows the following options as appropriate for the
resource selected:
- Read/write I/O processor data
- Select this option to read or edit the I/O processor data
- Dump I/O processor data
- See Performing an IOP dump.
- Reset I/O processor
- Some debug functions require that the I/O processor be in a disabled state. Select this option to disable the I/O processor. To enable the I/O processor for normal operation, you must select the IPL I/O processor option on the Select I/O Debug Function display or IPL the system again.
- IPL I/O processor
- Select this option to IPL the I/O processor. After selecting the reset I/O processor option, you can recover from an intermittent problem, refresh the I/O processor system information, or enable the I/O processor for normal operation. Selecting this option performs the same function as the IBM® i vary command with the reset option. For details, see How to reset an I/O processor card while the system is running.
- Enable I/O processor trace
- Select this option to enable IOP trace.
- Disable I/O processor trace
- Select this option to disable IOP trace.
- Enable I/O processor reset
- Select this function key to enable IOP reset (one IOP or all IOPs
on a bus).Attention: This function is only for System i® development use and is not for use in customer installations. Using this option can disrupt system operations and lead to unrecoverable system failures.
- Disable I/O processor reset
- Select this function key to disable IOP reset. Attention: This function is only for System i development use and is not for use in customer installations. Using this option can disrupt system operations and lead to unrecoverable system failures.
- Enable I/O processor IPL
- Select this function key to enable IOP IPL (one IOP or all IOPs
on a bus). Attention: This function is for System i development use only and is not for use in customer installations. Using this option can disrupt system operations and lead to unrecoverable system failures.
- Disable I/O processor IPL
- Select this function key to disable IOP IPL.Attention: This function is for System i development use only and is not for use in customer installations. Using this option can disrupt system operations and lead to unrecoverable system failures.
- Enable bus trace
- Select this option to enable a bus trace.
- Take/Release ownership
- If this system presently owns the resource, selecting this option
causes the system to release its ownership.
If this system does not presently own the resource, selecting this option causes the system to take ownership.
For more information on I/O debug, see Performing an IOP dump.
