[Cialug] Backups with rsync

[Jonathan Bailey]

I considered the hard link method, but how would that work for 
mirroring? Maybe I'll do it the simple way and do a full backup once a 
week, then incrementals off that (like diffs).

D. Joe Anderson wrote:

>On Sun, Feb 20, 2005 at 10:06:39AM -0600, Jonathan Bailey wrote:
>  
>
>>Academician Kula wrote:
>>
>>    
>>
>>>I am curious why you don't want hard links --- I've been using rsync
>>>with hard links to do backups for a while now and it seems to work
>>>well for me. Knowing a bit more about your situation may give us ideas
>>>for you to try.    
>>>      
>>>
>>I want to do incremental backups since they take less disk space in the 
>>end (full backups every Sunday for example). I'd then like to rsync 
>>those backups to another server. This is what I'm using for incremental 
>>backups now - it's not perfect, but I'm lookign for better.
>>
>>rsync -av --exclude-from=/root/rs.exclude 
>>--compare-dest=/backup/backup-$WEK/ /home/ 
>>/backup/backup-$WEK-$DATESTAMP/ > /backup/backup-$WEK-$DATESTAMP.log
>>    
>>
>
>See, that's the amazing thing about appropriate quoting--it makes it
>SO much easier to see that one didn't answer a question asked.
>;-)
>
>For instance, we still haven't any idea what your issue is with
>hard links in your backup set.  
>
>As for Dave's point about restoring from incrementals--that
>seems like a reasonable concern for incrementals spread across
>separate pieces of removable media or whatever.  But one of the
>major points of using the hardlinks method from the Mike
>Rubel-style[1] rsync backups is that each backup appears to be a
>*full* backup so far as the filesystem cares.  
>
>Granted, you don't have the redundancy that having real multiple
>full backups would give you, but you do get the incrementality
>(is that even a word?) and you don't end up taking the amount of
>storage or time that multiple full backups would take.
>
>  
>