[volunteergrid2-l] New Member

[Steve Dodson]

Shawn - You suggest running the repair process periodically - would you 
mind expounding further on this?  i.e. what command and how often?  I 
will add this information to the Hints section of the TWiki.  Also, I 
noticed others as suggesting a periodic lease renewal; how do I perform 
this and shouldn't this information also be a part of the Hints section? 
  Also, why might I want to run a deep check and what should I be 
looking for?

Sorry for all the N00b questions, but now that the grid is approaching 
critical mass, I'm beginning to read some of the docs in preparation for 
my first backup...wanted to be sure I had all the parts in place first!

On 02/14/2012 12:50 PM, Shawn Willden wrote:
> Ah, okay.
>
> I wouldn't bother backing up the Tahoe server at all.  The whole point
> of Tahoe-LAFS is that the grid is distributed and replicated for safety,
> so loss of any one node doesn't result in the loss of any data.  It's
> expected that nodes will occasionally die, and that's okay; everyone
> should be running the repair process periodically, and that will
> repopulate any missing shares.  So if your node dies, just stand a new,
> empty, one up in its place.
>
> There is one thing you should make sure you keep in order to have access
> to your data, though.  That's the root DIRCAP for your backups.  With
> that string plus access to a node on the grid (even a newly-added node),
> you should be able to retrieve all of your data.
>
> On Tue, Feb 14, 2012 at 12:07 PM, Johannes Nix <Johannes.Nix at gmx.net
> <mailto:Johannes.Nix at gmx.net>> wrote:
>
>     Hello Shawn,
>      >
>      > > BTW, can you give me some information how a safe and efficient
>     backup
>
>      > I think most (all?) of us are using "tahoe backup".
>
>     Oh, maybe I wasn't clear enough with my quesstion.
>     Yes, I think "tahoe backup" is a good solution for saving private
>     precious bits to the grid.
>
>     What I was wondering, however, was what I need to consider when I
>     back up the tahoe server. As far as I understand, everything I need
>     to recover is under $BASEDIR/storage and can be saved by incremental
>     copies, right?
>
>     Also, restoring 500 G can be a lengthy process, and I thought in the
>     "cp -al && rsync -raH" variant because that basically leaves a
>     ready-to-go copy for a replacement server. Correct so?
>
>     Johannes
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>
>
>
> --
> Shawn
>
>
>
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soli Deo gloria