Re: Understanding btrfs and backups => automatic snapshot script

[Marc MERLIN <marc@merlins.org>]

On Sun, Mar 16, 2014 at 10:42:24PM -0700, Marc MERLIN wrote:
> On Thu, Mar 06, 2014 at 09:33:24PM +0000, Duncan wrote:
> > However, best snapshot management practice does progressive snapshot 
> > thinning, so you never have more than a few hundred snapshots to manage 
> > at once.  Think of it this way.  If you realize you deleted something you 
> > needed yesterday, you might well remember about when you deleted it and 
> > can thus pick the correct snapshot to mount and copy it back from.  But 
> > if you don't realize you need it until a year later, say when you're 
> > doing your taxes, how likely are you to remember the specific hour, or 
> > even the specific day, you deleted it?  A year later, getting a copy from 
> > the correct week, or perhaps the correct month, will probably suffice, 
> > and even if you DID still have every single hour's snapshots a year 
> > later, how would you ever know which one to pick?  So while a day out, 
> > hourly snapshots are nice, a year out, they're just noise.
> 
> I'm happy to share my script with others if that helps:
> http://marc.merlins.org/linux/scripts/btrfs-snaps

Now added to
http://marc.merlins.org/perso/btrfs/post_2014-03-21_Btrfs-Tips_-How-To-Setup-Netapp-Style-Snapshots.html
(mostly to seed google and the archives)

Marc
-- 
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
                                      .... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/