System Crashing when doing a network boot
RISC SP (thin node)
Customer is going a network boot from another wide node.
The message appears on the screen:
AIX SYSTEM BACKUP & RECOVERY/6000
then the system crashes.
The customer has a locally attached 3590 tape drive. It appears
it is failing when setting the block sizes of all the local tapes to
This code in the /usr/lpp/sysback/netinst/boot/rc.boot4 script
\# configured to block size 512.
lsdev -Cc tape | while read tapename dummy
ucfgdevice -l $tapename
chggen -l $tapename -a block_size=512
cfgsctape -l $tapename
The problem is with the config methods being called. This tape drive
using ucfgAtape and cfgAtape. The code should be more like what was used
in sbrestore script.
\# Get config methods
UCFG=$(lsdev -Cl$device -r Unconfigure)
[ -z "$UCFG" -o ! -x "$UCFG" ] && UCFG=/etc/methods/ucfgdevice
CHANGE=$(lsdev -Cl$device -r Change)
[ -z "$CHANGE" -o ! -x "$CHANGE" ] && CHANGE=/etc/methods/chggen
CFG=$(lsdev -Cl$device -r Configure)
[ -z "$CFG" -o ! -x "$CFG" ] && CFG=/etc/methods/cfgsctape
\#Taken from the /usr/lpp/sysback/inst/sbrestore script
\# Make sure drive is set to 512 first
$UCFG -l $device
$CHANGE -l $device -a block_size=512
$CFG -l $device
To workaround this problem, the customer turn his tape drive off during
the network boot.
CLOSED by tj on 08/14/97 02:15:
I modified this script and have included in 4.1.2. I have also
tested a network boot and ensured that the tape drives are being
set correctly. I am unable to test with an "Atape", but I know
that the code works as far as getting the config methods from
Support Line: System Crashing when doing a network boot ITEM: DK0058L
Dated: August 1997 Category: N/A
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