Networker

Re: [Networker] Migrating to a different architecture - indexesand media database gone - SOLUTION

2007-01-26 11:47:49
Subject: Re: [Networker] Migrating to a different architecture - indexesand media database gone - SOLUTION
From: Dave Mussulman <mussulma AT UIUC DOT EDU>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Fri, 26 Jan 2007 10:37:50 -0600
On Thu, Jan 25, 2007 at 04:55:24PM -0000, Vince Howard wrote:
> Before I get started, thanks to Nico De Ranter for is off-line reply to
> a previous query on this.  I'd just like to put this out for general
> consumption.

The nsrmmdbasm trick isn't really smoke and mirrors.  You're essentially
doing what everyone suggested -- do a DR restore from tape of the media
database on the new server.  You just shaved the process down to the
underlying asm and moved the tape out of the way.  I presume that the
restore overwrote (rather than merged) the destination media database?  


> I've been carrying out some testing re the above from Solaris to Windows
> 2000 (NW 7.1.2 to 7.2.1).  I've migrated the media database using
> nsrmmdbasm, but this doesn't help with indexes - nsrck -L6 doesn't
> rebuild them.  So, just out of curiosity I tar'd one of the client
> indexes and used Winzip to unpack it on the Windows box. Using NetWorker
> User I can browse this client's index, mark files for recovery and get a
> list of backup versions; I don't have a jukebox attached to the Windows
> box at the moment so I can't test actually recovering the data.
> 
> Does anyone have any comments, warnings or whatever about this approach?
> Am I setting myself up for a fall somewhere down the line when the
> indexes (possibly) start to corrupt?

There was a time when indexes were much more fragile.  It might be to
the point where you could copy index files between platforms, but I
wouldn't.  In fact, I wouldn't worry about them at all.  Just work on
getting a full backup cycle on your new server and let the indexes fill
themselves up naturally.  If you need an older index restore, do an
'nsrck -L7 -t <timeframe> <client>' and pull it off the tapes.

Dave

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