Instructions:

There are two fundamental steps required to properly configure the autoloader:

Get the modified autoloader script and modify to suit the current configuration.

Change /etc/brutab (once above step is done!) to reflect the new configuration.

Download script and modify:
Download script: am1.script.bru
      (You may have to hold the Shift key then Left-Mouse click to save)
Install script by doing:
 mv am1.scrpt.bru /bin
 cd /bin
 bru -xv -ua -f am1.script.bru
Modify unmountcmd.sh by searching for: poss_chng  All locations that may 
need changing are tagged with the "poss_chng" line.
You won't need to make any changes to the mountcmd.sh file
Test your file:  Ensure you have at least two tapes in 
your autoloader, one currently loaded and one in the next slot, then 
give the command:

./bin/unmountcmd.sh /dev/st0 1 c
The current tape should eject and the next should load.  If the tape does not 
eject, you have a problem with your script.  Be sure to check all commands in 
your unmountcmd.sh since the commands may not work on your OS.  Check your man 
pages.  If the tape does eject but the next tape fails to load properly then your 
script is fine.  The problem in this case is that your autoloader is NOT configured 
properly for sequential mode. See your autoloader manual for instructions on proper settings.
To change /etc/brutab:
Edit (vi or other) /etc/brutab
Add two Global Parameters near the beginning just below the existing ones.  
These lines ALL begin with "pound-plus" (#+).  Failure to do step 1 first could 
result in the BRU extraction of script files to fail as BRU will be looking for 
mountcmd.sh and aborting.

#+MOUNTCMD=/bin/mountcmd.sh
#+UNMOUNTCMD=/bin/unmountcmd.sh
NOTE:  The size should be set to zero (size=0) if the drive does hardware 
compression (most do) or if software compression will be in use.  
Otherwise, setting an actual size will cause BRU to stop when it writes that amount of 
native data. 

Return to

BRU Manual