UNIX for Dummies Questions & Answers

hi,

i'm having a little trouble with an AIX 5.2 script that i have written and i was wondering if anyone could please offer me some advice on how to append a savevg backup to a mksysb tape, or more importantly where i'm going wrong? i've been trying to get this to work on and off for about a month with no joy now.

here's a cut down version of my script:

Code:

MKSYSBLOG=/usr/tmp/mksysb.log
VGLOG=/usr/tmp/vg.log
MKSYSBVLOG=/usr/tmp/mksysbv.log
VGVLOG=/usr/tmp/vgv.log

tctl -f /dev/rmt0 rewind
/usr/bin/mksysb -ipX /dev/rmt0.1 2>$MKSYSBLOG
/usr/bin/savevg -ipXf /dev/rmt0 DEV_VG 2>$VGLOG
/usr/sbin/restore -s3 -Tqvf /dev/rmt0.1 2>$MKSYSBVLOG
/usr/sbin/restore -s1 -Tqvf /dev/rmt0.1 2>$VGVLOG
tctl -f /dev/rmt0 rewind

the problem that i am having is that if i run this script i get the following error from the restore commands:

restore: 0511-160 Cannot read the backup media
/dev/rmt0.1: There is an input or output error

with the tape rewound, if i run a restore -Tvqf /dev/rmt0 it lists the files in DEV_VG. this made me think that the tape was rewinding before running the savevg command for some reason.

if i change the backups to use the rmt0 device and manually do all my rewinding and fast forwarding with tctl i get the same errors as the restore command gives me.

if i run a /usr/bin/mksysb -ipX /dev/rmt0 then a restore -Tvqf /dev/rmt0 it lists the files in the rootvg. from what i've read a mksysb should put the files on the 3rd segment of the backup. is this correct?

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