Sun Microsystems Netra t1 100, Руководство пользователя и администратора

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84 Netra t1 User and Administration Guide • June 2000
Configuring the LOM to Restart the
System Automatically After a Lock-up
The LOM software pre-installed on the Netra t1 (or available on the LOMlite CD)
includes the
tsdog
utility.
tsdog
is a watchdog process. It ‘pats’ the LOM device at
specified time intervals, and as long as it continues to do this the LOM device takes
no action. If however, the system locks up and the LOM device therefore does not
receive its usual ‘pat’ from the
tsdog
watchdog, then, after a timeout period, the
LOM device lights the Fault LED, sends a LOM report, and (if configured to do so)
resets the Netra t1 system.
By default, the
tsdog
watchdog pats the LOM every 10 seconds and the LOM
device’s watchdog timer times out after 40 seconds. When the watchdog timer times
out, the LOM reports an event and lights the Fault LED, but it does not by default
reset the system.
To make the LOM device reset the system when its watchdog timer has timed out
(after not receiving a pat from the
tsdog
watchdog), you need to edit the LOM’s
configuration file. This file is called
lom.conf
and is stored in
/kernel/drv
.
To make the LOM restart the system automatically after a lock-up, edit the
wdog_reset
line to read:
Note –
An alternative is to type
tsctl hwreset=on
at the Solaris prompt.
However, if you use this command, you will have to remember to repeat the
command each time you boot the system.
By default the LOM attempts to disable its watchdog timer if it detects that a break
signal has been sent to the system. This prevents it from restarting the system
unnecessarily. If you do not want the LOM to attempt to disable its watchdog timer
when a break has been sent to the system, edit the
disable_wdog_on_break
line
to read:
wdog_reset=1
disable_wdog_on_break=0
SysAdmin.book Page 84 Friday, March 30, 2001 2:38 PM