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Re: [rdiff-backup-users] instrument data backup

From: Adrian Klaver
Subject: Re: [rdiff-backup-users] instrument data backup
Date: Sun, 29 Jul 2012 10:57:41 -0700
User-agent: Mozilla/5.0 (X11; Linux i686; rv:14.0) Gecko/20120713 Thunderbird/14.0

On 07/29/2012 07:55 AM, Z F wrote:
Dear rdiff-backup users

I have a question and thought you might  help me.

I need to backup data from a scientific instrument. The problem is that the 
instrument has limited space, so

data has to be moved from the instrument onto other drive. From time to time, 
the old data needs to be copied
back to the instrument. Rdiff-backup is handy because regular "cp" command will 
restore the latest version of the datafile.
Thus users can be given read-access to the backup and they can restore data 
they need by themselves.

The above confuses me. You say the old data needs to copied back, but then you say rdiff-backup is handy because it allows the latest version to be copied back. Not sure I am following the logic:)

The "problem" is that if the file is deleted from the source it will no longer be 
available in the "mirror mode". The file
is still there in the backups, but now hidden and a regular user cannot find it by 
looking at the "backup/destination" folder.
I cannot expect the users to be able to do "restore process by themselves"

Is there a mode of rdiff-backup operation which would allow "mirror with 
memory" that is, to tell the program not to

delete the file in the mirror, even though it was deleted in the source?

Still not sure I am following correctly. Still, why not move the data from the instrument to a directory on the hard drive and then rdiff-backup from that directory to another directory?

If rdiff-backup cannot do it, is there other software which will be perform 
this function?

Thank you very much for your help


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Adrian Klaver

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