Interface Card OL* Support Guide

Chapter 3
Attention Button - Direct Slot Control
Attention LED and Locating a Slot
73
Attention LED and Locating a Slot
Controlling the Attention LED cannot be done from the slot itself, but can be done from either the command
line using the olrad command, “Turning the Attention LED to BLINK or OFF” on page 79, or using the
pdweb tool, “Turning Attention LED to BLINK or OFF” on page 61.
To turn the Attention LED to the Blinking state using the olrad command.
olrad -I ATTN
slot_id
, where slot_id is the number of the slot.
To turn the Attention LED steady OFF, use the following.
olrad -I OFF
slot_id
hotplugd Daemon and Logfile
The hotplugd daemon handles PCI I/O events that are generated by pressing the Attention Button
corresponding to a PCI I/O slot.
If Attention Buttons are pressed on multiple cards, the events are queued and then executed in the order the
system receives them.
If the same Attention Button is pressed more than once after the 5 second cancel window, the additional
pushes are ignored.
This daemon invokes /usr/bin/olrad to perform the various OL* operations on the slot on which the
Attention Button has been pressed. The daemon does not use the -f (override CRA results) option of olrad.
Normally, this daemon is started by the /sbin/init.d/pci_olar startup script at boot time.
If an Attention Button is pressed before the startup of the daemon, the event is dropped and no messages are
logged. See the DIAGNOSTICS section of the hotplugd manpage for messages that are logged in the system
log file or the hotplugd log file.
Currently, only the online addition and replacement functions are supported. Online deletion is not
supported.
The blinking of the power LED is not supported on all hardware platforms.
The default location of the hotplug daemon log file is at: /var/adm/hotplugd.log
See hotplugd (1M) manpage for more details.