Chandra Kalle said:


>3. Make the E4500 recognize the new tape drive. 
>   (drvconfig, devlinks, tapes ?) => WILL THIS 
>   CAUSE ANY DAMAGE TO MY VXVM CONFIGURATION? <=
>   WHATS THE BEST WAY TO MAKE THE E4500 RECOGNIZE
>   THE NEW TAPE DRIVE WITHOUT DISTURBING VXVM?

man drvconfig:

   drvconfig  [ -bn ]  [ -a alias_name ]  [ -c class_name ]   [
     -i drivername ]  [ -m major_num ]  [ -r rootdir ]

You can specify what devices to have it probe for by major number.

grep '^st ' /etc/name_to_major

to get the right major number for your kernel, etc. This will probe only for 
tape drives. Then, run "tapes" and you should be all set. If you've had tape 
drives attached before, I'd recommend doing a "rm /dev/rmt/*" first, just to 
make sure you're numbering is nice and tidy.

>6. Configure drives. => DO I HAVE TO INSTALL THE 
>   SCSI PASS THRU DRIVER (SG DRIVER) ON THE E4500?
>   WILL THAT AFFECT VXVM CONFIG? <=

Nope, it does not need the sg driver. It will use the E250 to control the 
robot. Though, on second thought, I don't know when it actually gets control 
of the drive, and whether it needs the SG driver to do locate_block commands, 
or whether these are done by the robot control host.... though if its not 
connected, I guess it can't, and you'll need the SG driver if you want to do 
fast block location on tape.



-- 
Andy Steingruebl              | e-mail: steingra AT pprd.abbott DOT com         
 
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