Networker

Re: [Networker] Speeding up scanner?

2010-02-25 00:48:31
Subject: Re: [Networker] Speeding up scanner?
From: A Darren Dunham <ddunham AT TAOS DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Thu, 25 Feb 2010 05:47:16 +0000
On Wed, Feb 24, 2010 at 10:38:54AM -0500, George Sinclair wrote:
> What I'd like to do is essentially mimic the speed of save set
> recover if the database on the new server instead already knew about
> the tape and its save sets, which, of course, it doesn't.
> 
> Checking the man page for scanner, I see the 'f' and 'r' options for
> starting file and record number.
> 
> 1. I assume that would accomplish what I need?

Yup.

> 2. Assuming I can query the media database on the old server that
> contains all the information on this tape, how do I determine the
> 'f' and 'r' values to supply to scanner on the new server?

'mediafile' and 'mediarec' from mminfo.  You want the values for the
first fragment of the saveset.

In practice, all you need is the -f.  -r can provide some very slight
additional improvement, but it's usually very small.

-- 
Darren

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