Procedure 10.23: PERFORM OFF-LINE DUMP
OVERVIEW
If all other procedures fail to restore terminal access, the computer may have to be booted.
To assist your technical-assistance organization in finding and correcting causes of terminal suspends and other
system anomalies, take an off-line dump when a terminal suspend occurs and a system boot is required.
The following procedure describes taking an off-line dump.
NOTE:
Control units (CU) must have been duplex when the event that is being dumped occurred.
PROCEDURE
1.
Mount spare 2400-foot reel of tape on the tape drive.
2.
Remove the standby CU. If there is craft control, at master control center (MCC) type and enter:
RMV:CU x
Where:
x
= control unit number.
If there is no craft control, at CU power switch, toggle the
RST/ROS
switch to
ROS
.
NOTE:
The state of the memory at the time of the terminal suspend is now saved in the off-line CU.
3.
Get out of
Craft Lockout
(EAI Poke 15).
4.
At the MCC, type and enter:
EXC:ENVIR:UPROC,FN="/bin/sh",ARGS="-c"
-"pio dd if=/dev/ofln of=/dev/mt00 bs=6144";
Response:
EXC ENVIR UPROC COMPLETED
5.
Return the CUs to duplex by removing the force on-line (command
13
) and restoring the CU (
RST:CU
).
6.
Send the tape, a copy of the sheet covering the attempts made to clear the suspend, and any other
applicable information or receive-only printer printouts to the 3B field support group.
7.
The 3B field support group will then determine the cause of the suspend. If the cause is due to an operating
system problem, the application engineer will forward all data to the operating system field support group.
NOTE:
Tapes must have return address on them or they will not be returned.
Results:
Off-line dump performed.
8.
STOP. YOU HAVE COMPLETED THIS PROCEDURE.
235-105-210
October 1999
Copyright © 1999
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