[Bacula-users] Automatic Eject tape once job finishes
2010-05-17 07:26:34
James Harper wrote:
>
> >
> > Try using "RunAfterJob" option on the Job definition with a command
> >
> like "mt -
>
> > f /dev/st0 eject" (using you scsi device path of course)
> >
> >
>
> I don't think there is a StorageRunAfterJob, so your suggestion would
> run it on the director which only works if the sd and the director are
> the same machine.
>
> I suggest something like:
>
> . Create an account on the sd with a minimum of privileges
> . Set up ssh public key authentication so that the account the director
> is running as can ssh to the new account on the sd
> . Configure the RunAfterJob to ssh to the sd and run the required
> command (eg the mt -f /dev/st0 command)
>
> You will either need to make the new account on the sd a member of the
> group that owns the tape device, or use sudo. Sudo might be better as it
> would restrict the account to only ejecting. Your eject script may need
> to issue bconsole commands to do the right things with the tape library
> too if required.
>
> James
>
>
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Thanks for the idea, James. I tried what you suggested, but then tailored it to
my own needs.
What I have done is to write a script which runs on server2 on Fridays at
6.30AM, which simply unloads the tape. In case it helps anyone else, here is
the script :
#!/bin/sh
#
# Set script variables
BACULA=/sbin/bacula
CHANGER=/etc/bacula/mtx-changer
SLEEP='/bin/sleep 20'
DRIVE=/dev/sg0
DEVICE=/dev/nst0
export BACULA CHANGER SLEEP DRIVE DEVICE
#
# Shut down Bacula so that the drive can be acessed
$BACULA stop
#
# Allow 20 seconds for storage daemon to stop
$SLEEP
#
# Find out which tape slot the drive was loaded from
export SLOT=`$CHANGER $DRIVE loaded 0 $DEVICE 0`
#
# Unload the tape back into its original slot
$CHANGER $DRIVE unload $SLOT $DEVICE 0
#
# Start Bacula again
$BACULA start
It is fairly generic, so could be used as is or else adapted fairly easily.
Thanks again.
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