Interface Card OL* Support Guide

NOTE: When you initiate an online replacement using the Attention Button, the system performs
a restrictive CRA. The online replacement fails if critical resources may be impacted. If you want
to control the CRA, use pdweb or the olrad command.
For latch instructions, see the system hardware documentation.
Deleting a Card On-Line
IMPORTANT: It is not possible to perform an Online Deletion using the Attention Button
Locating a Slot With the Attention LED
NOTE: You cannot control the Attention LED from the slot itself.
You can control the attention LED using either the command line using the olrad command as
described in “Turning the Attention LED to BLINK or OFF” (page 69) or using the pdweb tool
as described in “Turning the Attention LED to BLINK or OFF” (page 56).
The hotplugd Daemon and Log file
The hotplugd daemon processes PCI I/O events generated by pressing the Attention Button
corresponding to a PCI I/O slot.
This daemon is started by the /sbin/init.d/pci_olar startup script at boot time.
If an Attention Button is pressed before the daemon starts, 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.
The blinking power LED is not supported on all hardware platforms.
If you press Attention Buttons on multiple cards, the events are queued, then executed in the
order the system receives them.
If you press the same Attention Button more than once after the 5 second cancel window, the
system ignores the presses.
The hot-plugd 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.
The default location of the hotplug daemon log file is /var/adm/hotplugd.log.
For more information, see the hotplugd(1M) manpage.
Results of Pressing the Attention Button
The following table lists the results of pressing the Attention Button on a PCI slot.
Table 3-3 Results of Pressing the Attention Button
Press Attention Button ResultsInitial Condition
Power to slotDriver AttachedSlot SuspendedSlot Occupied
The slot resumes operating
after the card is replaced.
OFFYesYesYes
The slot performs an add.OFFNoN/AYes
The slot is suspended to
prepare for card replacement.
ONYesNoYes
62 Attention Button - Direct Slot Control