Fbackup with tape Carousel

[Joe Hege]

I have a 8 slot tape carousel and I'd like to use fbackup in a script to use the different slots at different times useing Cron. Any ideas?

[eran maor]

Hi

Below is an example chgvol script to enable the unattended use of tape
libraries and autoloaders with fbackup(1M). It is unsupported, but has
worked fine for many customers. It assumes the device file for the robotics
is at /dev/picker. This maybe changed in the script.

Save this script in the file /var/adm/fbackupfiles/chgvol, and make it
executable. You will need to make sure that one of the switches on the
fbackup command line is -y. If you are using sam to
schedule the backups then it is recommended to do the following to add the -
y:

1) cp /usr/sam/lbin/br_backup /usr/sam/lbin/br_backup.change
2) Change the cron job to call the modified br_backup.change
3) Edit the br_backup.change in the following two lines

FULL) backup_type="-0" to
FULL) backup_type="-0 -y"
and
PART) backup_type="-1" to
PART) backup_type="-1 -y"


Also you will need to use the -c option with fbackup, and specify
a configuration file(/var/adm/fbackupfiles/fbackup_config is a good
place for this file). Sam does this automatically. You will just need
to edit the existing file.

In this configuration file you should specify the following:

blocksperrecord 128
records 32
checkpointfreq 256
readerprocesses 2
maxretries 5
retrylimit 5000000
maxvoluses 100
chgvol /var/adm/fbackupfiles/chgvol
filesperfsm 200


RESOLUTION

#!/usr/bin/sh
####################
# chgvol for autoloaders
# Revision 1.0
# Date: 12/21/99
# Author: James Kirkland / jtk@atl.hp.com
# Purpose: To allow fbackup to work with autoloaders
# NOTE! This script is not supported by HP. It is provided as an example only!!
####################

# Setting up variables

TMPDIR=/var/tmp
RTDIR=/var/adm/chgvol
SES_FILE=$RTDIR/session
NUM=$TMPDIR/chg_num.tmp
PICKER=/dev/picker # device file for the robotic arm

#scripting

get_current_pid(){
NOW_PID=`ps -ef |grep fbackup |grep -v grep | cut -c 10-16`
return 0
}


is_sess_old (){
S_PID=`tail -1 $SES_FILE`
get_current_pid
if [ $NOW_PID -eq $S_PID ]
then
echo "Continuing with current session from fbackup PID $S_PID"
else
echo "This is the first tape change for fbackup PID $NOW_PID"
echo $NOW_PID > $SES_FILE
init_num
fi
return 0
}

init_num() {
echo "1" > $NUM
return 0
}

if [ -a $SES_FILE ]
then
is_sess_old
else
touch $SES_FILE
is_sess_old
fi
if [ -a $NUM ]
then
S_NUM=`cat $NUM`
else
init_num
S_NUM=`cat $NUM`
fi
S_NUM_OLD=$S_NUM
let S_NUM=S_NUM_OLD+1
if [ $S_NUM_OLD -gt 0 ]
then
echo "Moving tape from Drive 1 to Slot $S_NUM_OLD ."
mc -p $PICKER -s D1 -d S$S_NUM_OLD
#err code needed
echo "Moving tape from Slot $S_NUM to Drive 1 ."
mc -p $PICKER -s S$S_NUM -d D1
#err code needed
echo $S_NUM > $NUM
logger -t chgvol -p local0.info "Changing tape. Pulling from Slot
$S_NUM"
fi
exit 0

[Timmy Sin]

Hi,

I have tried the solution and it works well with fbackup. However, after I modify the solution and apply it to frecover, the following error messages logged after the second tape was loaded:
frecover(5404): Press return when the next volume is ready on /dev/rmt/1m:
frecover(5427): unable to open controlling terminal

Do anyone have some idea on that?

Thanks in advance.

Regards, Timmy.

[Timmy Sin]

Hey folks,

Any idea on my problem? Please help.

Thanks in advance.

Timmy.