[BBLISA] Rsync Backup - The Continuing Conversation...

[Richard 'Doc' Kinne]

Folks:

I really appreciate the rsync/backup conversation that has developed  
here! I appreciate everyone who mentioned the venerable tar, but I  
decided to try rsync.

As I mentioned doing an rsync on a MacOS 10.5.6 system from an NFS  
mounted disk to an external firewire drive produced copious (and that  
word is an understatement!) "file vanished" errors. I actually did  
the rsync again thinking that it would pick up the files it had not  
on the first pass that it thought were "vanished" but that was not  
the case.

Thinking this could be something to do with my web disk structure I  
rsynced another computer that I needed to back up and got the same  
behavior - at least 40% of the files were declared vanished. The only  
consistent behavior in this is that once files started to be declared  
vanished, it was that way to the end of the process.

So, it didn't seem to be something inherent in the disk structure  
since I saw the behavior on two different computers. The next step  
was to take NFS out of the equation and do an end-to-end copy (as was  
suggested by a few people). This, of course, meant setting up an  
Rsync Server, which I managed. I did a test backup last night and it  
actually looks good. No "file vanishings" and the space comparison  
looks good as well.

Maybe that's it! However, I'll still be interested in the  
conversation because I remember at least one person mentioning, "Oh,  
look, I'm getting  'file vanishings,' too. I wonder why that is?'"

By the way, we need to have a meeting. I'd like to meet/thank you  
all.  :-)
---
Richard 'Doc' Kinne, [KQR]
American Association of Variable Star Observers
<rkinne @ aavso.org>



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