[plug] Backups

[Marc Wiriadisastra]

Sorry to not clarify since I've "never" backed up network data under 
linux before.

I would like full whole harddrive back up once a week for the sake of if 
the system all goes to the preverbial out house.

I would also like nightly incremental backups with one weekly backup of 
the following folders being the "usual" ones and then rotate those over 
a weekly basis e.g. keep for 1 week or maybe longer I don't know.

/etc/ /home /workdir  /var

Regards,

Marc

Craig Ringer wrote:

> Marc Wiriadisastra wrote:
>
>> Anyways do I have to mount the file system as read only backup then 
>> unmoutn and remount it as read and write.  As I said this sits on 
>> 24/7 granted its not used constantly and I'm not worried about but 
>> its just a situation where I don't want to lose data and the just in 
>> case a murphy's stupid laws is what concerns me.
>
>
> OK. What, exactly, are you trying to accomplish. There are several 
> different things people tend to talk about under the heading 
> 'backups', and I'm not entirely clear on what you're after. This would 
> seem to be an important thing to estabilish before going into too much 
> detail about the various availible tools.
>
> Common "backup" tasks include:
>
> - Regular backups of frequently changing information on a system. 
> Often done nightly or sometimes weekly..
>
> - Incremental backups, where only information that changed since the 
> last backup is backed up.
>
> - Archival style backups, where often large chunks of data are being 
> backed up in preparation to either delete the originals to save space, 
> or to cease backing up the originals to free up capacity on regular 
> backups.
>
> - System snapshots, where the goal is to make a clone of the entire OS 
> and data with the intent of having something that can be restored in a 
> total loss situation (system crack, server theft, fire, etc). A system 
> snapshot is sometimes being taken with the intent of immediately 
> restoring it to another system so that that other system can be used 
> as a cold spare/warm spare.
>
> IMHO all of the above are a good idea. I like to use differential 
> backups myself (though I'm currently using daily full backups of 
> reguarly changing content), combined with off-site archival of older 
> data and regular system snapshots.
>
> Nonetheless, it'd be helpful to know what you're currently trying to 
> achieve.
>
> -- 
> Craig Ringer
>
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