Networker

Re: [Networker] Does cloning unmuliplex and make recovery faster?

2007-01-19 07:15:13
Subject: Re: [Networker] Does cloning unmuliplex and make recovery faster?
From: rader AT GINSENG.HEP.WISC DOT EDU
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Fri, 19 Jan 2007 06:09:09 -0600
 > > I find it hard to believe that cloning preserves multiplexing, it's my
 > > understanding that nsrclone goes one by one, SSID to the next SSID
 > > cloning each singly before moving on to the next

 > It doesn't need to do that (at least not in the situations I've used
 > it), and it's very easy to test.
 > 
 > Instead of copying one ssid at a time, it can maintain a list of ssids.
 > As it streams a source volume, data from any matching ssid is copied to
 > a destination volume.  This has the big benefit of requiring only a
 > single pass on a source volume.

And so for many years we've been semi-manually doing something like...

  BEGIN='05Jan07 2359'; END='06Jan07 2359'
  QUERY="'!incomplete,level=full,'savetime>$BEGIN,savetime<$END"
  mminfo -r ssid -q "$QUERY" > ssidlist
  nsrclose -S `cat ssidlist`

Is there a better way these days?

steve 
- - - 
systems & network manager
high energy physics
university of wisconsin

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