Networker

Re: [Networker] Incrementals and Indexes ?

2008-04-02 19:17:43
Subject: Re: [Networker] Incrementals and Indexes ?
From: A Darren Dunham <ddunham AT TAOS DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Wed, 2 Apr 2008 23:12:45 +0000
On Thu, Apr 03, 2008 at 12:44:50AM +0200, Roy Wiseman wrote:
> Can you explain the overall process on how incrementals are processed when
> NetWorker is actually working properly ? does it first take an index of the
> files to be backed up, and then compare that with the last backup
> index ?

Nope.

> how does it do the compare, filenames only ? crc ? some other method
> ??

Either timestamps or client knowledge (archive bit or FS backup
journal).  So on Unix, it's always timestamps.  

There's no file index passed around.  See the man page for 'save' and
'savefs'.  You can run a group in probe or verbose mode and see the
actual 'save' command line that is run and duplicate it on the client
yourself.  

I must admit, I have little experience with Windows-specific backups, so
I'm not as aware of the way its mechanisms interact with 'save'. 
-- 
Darren Dunham                                           ddunham AT taos DOT com
Senior Technical Consultant         TAOS            http://www.taos.com/
Got some Dr Pepper?                           San Francisco, CA bay area
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