On Thu, Aug 12, 2010 at 10:07 AM, Felix Brack
<fb AT ltec DOT ch> wrote:
On Bacula 5.0.2 I would like to mount the storage before a backup job
starts in case it was unmounted by 'umount' before.
The following works fairly well for me, as an Admin job that is scheduled to start 5 minutes before our normal nightly backups:
Job {
Name = "MountSDLTTape"
JobDefs = "AdminDefaultJob"
FileSet = "Catalog"
Schedule = "WeeklyCycleMountTape"
Client = cheddar-fd
# This script mounts the SDLT-Tape-1 drive
RunScript {
RunsOnClient = No
RunsWhen = Before
Command = "/root/batch/scripts/bacula/bacula_mount_sdlt_tape.sh"
}
Priority = 5
}
The shell script that is run is just this:
#!/bin/sh
# mounts a tape by calling bconsole
mtdev="/dev/nst0"
dev="SDLT-Tape-1"
sbindir="/usr/sbin"
confdir="/etc/bacula"
# is tape already mounted in bacula?
echo "status storage=$dev" | $sbindir/bconsole | grep "Device \"$dev\" (/dev/nst0) is mounted"
RC=$?
if [ $RC -eq "0" ]
then
echo "tape already mounted in bacula."
exit 0
fi
echo "mount storage=$dev" | $sbindir/bconsole -c $confdir/bconsole-fms.conf
By the way, the opposite (unmounting) does not work too:
RunScript {
RunsWhen = After
Command = "echo 'unmount storage=kvm1-sd' | /usr/bin/bconsole"
Command = "/bin/mt -f /dev/nst0 eject"
}
This ends with 'ClientAfterJob: /dev/nst0: Device or resource busy'
which I understand since the 'unmount' command did not work, the storage
daemon still locks the device.
I have another unmount shell script that runs from a different Admin job well after the normal backup window is finished, and running with a higher priority to unmount the tape.
It seemed easier to me to put together a small shell script rather than trying to get the quoting & pipelining to work directly from a bacula RunScript. This approach has worked reliably for me to mount and unmount a single tape drive for a few years now.
chris
