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[Duplicity-talk] FW: Re: addonly mode?
From: |
Avery Andrews |
Subject: |
[Duplicity-talk] FW: Re: addonly mode? |
Date: |
Fri, 30 Jul 2010 15:48:44 +1000 |
Ken Loafman wrote:
>Avery Andrews wrote:
>>
>> I use a backup regime (based on svn) whereby, if things are working
>> correctly, files should only be added, never changed, when duplicity
>> plays its role. So it would be excellent for if there were an
>> --addonly switch that would halt the script if it thought it had to
>> change rather than add any files when sending to the backup server.
>> Is there such a thing that I've somehow missed? Writing a script to
>> do a dry run first and checking for changes would work, but seems a
bit clumsy.
>
>Duplicity, and probably most backup system, do not change the contents
>of the remote archive. They merely add to the archive as needed. I'm
confused by your >question.
>
>...Ken
I didn't express myself very clearly. The idea is that, even though
duplicity won't overwrite a good backup file with a bad one, it might
still be useful, under certain circumstances, to know that it was adding
a new version of an existing file, rather than an additional file. In
my backup scheme, for example, if it thinks it's adding a new version of
the file, something has gone wrong, and it would be better to know
sooner via an exit-with-failure message, than later.
- Avery
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