shimell@stc.UUCP (Dave Shimell) (05/03/85)
<gobble gobble>
I enclose a dump script which we run every night via crontab.
The script runs on BSD4.2 and does an incremental dump level 6
Mon-Thu and a level 3 on Fri. Once a month we do a manual
level 0. Yes, I know this is a trivial command script to write
but how many of you still labour with manual dumps?
Operation is simple. a) load tape before going home, b) remove
tape in morning!
All file systems are dumped to a single tape therefore you have
to "mt fsf n" to the correct file system before restore.
Bugs:
- If the dumps require more than a single tape, the
last dump must be aborted and manually restarted.
(I guess the script could keep track of the amount
of tape used in previous dump run.) As the script
is reading /dev/console, you have to compete with
getty to talk to dump.
- There is a check for machine stc-b (6250 bpi), you
may have to change this line if you use a 6250 bpi
tape drive. Any one know of a better way of finding
out the tape density?
- The hostname call fails when single user.
-=-=-=-=-=-=-=-=- crontab entry -=-=-=-=-=-=-=-=-
0 22 * * 1-5 /etc/autodump < /dev/console > /dev/console 2>&1
-=-=-=-=-=-=-=-=- Autodump follows -=-=-=-=-=-=-=-
#!/bin/sh
# 'Dump script for single tape dump by crontab'
if test "$1" != ""; then
weekday="manual"
level="$1"
else
set `date`
case "$1" in
Mon) # This backup will probably be done manually
weekday=Monday
level=6
;;
Tue) # First of the week
weekday=Tuesday
level=6
;;
Wed) # Second stab
weekday=Wednesday
level=6
;;
Thu) # Should still be lots of space
weekday=Thursday
level=6
;;
Fri) # Final unattended
weekday=Friday
level=3
;;
*) # Any other day assume an intermediate backup
weekday=Weekend
level=6
;;
esac
fi
echo "autodump: ${weekday} level = ${level}" > /dev/console
echo "autodump: dump W" > /dev/console
/etc/dump W > /dev/console 2>&1
if test `hostname` = stc-b; then
args="${level}udf 6250 /dev/rmt12"
else
args="${level}uf /dev/rmt12"
fi
set `awk -F: '$3 ~ /^rw$|^rq$/ {if ($2 != "/tmp") print $1, $2}' /etc/fstab`
while test $1
do
echo "autodump: dump $args $1 ($weekday dump of $2)" > /dev/console
sync
sync
sync
/etc/dump $args $1 > /dev/console 2>&1
shift
shift
done
mt rew
mt offl
echo "autodump: backups completed " > /dev/console
--
Regards,
Dave Shimell. <shimell@stc.UUCP>
{root44, ukc, idec, stl, creed}!stc!shimell