Veritas-bu

[Veritas-bu] trying to force tape on specific drive in a robotic environment (Sun L20 - 2 x LTO-1).

2005-05-25 09:53:32
Subject: [Veritas-bu] trying to force tape on specific drive in a robotic environment (Sun L20 - 2 x LTO-1).
From: M.W.Ellwood AT rl.ac DOT uk (Ellwood, MW (Mike))
Date: Wed, 25 May 2005 14:53:32 +0100
> We have a Sun-branded L20 robot with 2 LTO-1 drives.
> 
> I would like to force tapes on to a specific drives for diagnostic purposes 
> (trying to reproduce a tape error).
> 
> This is actually in bpduplicate, so it's not simply a matter of DOWNing one 
> of the drives.
> 
> I have tried physically pre-mounting the tapes, but Netbackup perversely 
> unloads them and remounts them
> according to its own will or whim (the opposite way round in this case).
> 
> I tried mounting the tapes with tpreq, but that doesn't seem to work.
> (It seems to keep them reserved, so bpduplicate (or anything else) can't use 
> them until unmounted with tpunmount).
> 
> (Anyone know what tpreq is actually intended for?) 
> 
> 
> What algorithm (if any) does Netbackup use for choosing a drive for a 
> specific mount?
> 
> Is this configurable?  (this rang a vague bell), but I couldn't find anything 
> useful looking in bp.conf documentation
> (or would it be vm.conf...?).
> 
> I am running (don't laugh) 3.4, on Solaris 5.8 .
> 
> 
> With thanks,
> 
> Mike E.


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