[Networker] How does nsrclone order a list of SSIDs for cloning?

brerrabbit wrote:
> 
> bbartick wrote:
> > We recently rolled out a VTL and I'm in the process of scripting the 
> > cloning process. From the testing I've done, it seems as though nsrclone 
> > does not clone the SSIDs in the order you pass to the command.
> > I'd love to clone the oldest savesets first so that I can roll them off the 
> > VTL first.
> > I was thinking I could do something similar to:
> > 
> > mminfo -ot -q "pool=VTL1,copies=1,!incomplete,savetime<21 days ago" -r ssid 
> > --> output to a file $FILE
> > 
> > 
> > Then I will clone the ssids
> > 
> > nohup nsrclone -b "$POOL" -y "$RETENTION" -J "$NODE" -S -f $FILE &
> > 
> > I was surprised to see my savesets aren't being cloned in the order of the 
> > savesets in the file.
> > Can anyone tell me how nsrclone determines which savesets will be cloned 
> > first?
> > 
> > Thank you,
> > 
> > Brett
> 
> 
> I don't believe that this info is publicly available, we've looked into this 
> previously and it wasn't.  In fact, we had an Networker resident from EMC on 
> site and he couldn't get the info either.  Maybe things have changed, I've 
> got a mod to our clone script I'd like to implement and having that info 
> would simplify things greatly.
> 
> --brerrabit


My quess is that the internal logic has something to do with minimizing the 
number of tape changes. It looks like if you are cloning a particular saveset, 
the system will try and find other savesets from the mounted tape that might 
need to be cloned. With a physical tape, this makes perfect sense, but with a 
VTL and quick tape changes, maybe there should be an option to nsrclone to obey 
the provided list of saveset IDs.
BTW: my pseudo code above had a type-o. copies should be "2", not "1".

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