[Dirvish] Number images x Disk Usage

[Joel Franco]

On Qua Mai 02 07 22:41, Jon Radel wrote:
> Joel Franco wrote:
> 
> > I could suggest, IMHO, to put a additional parameter like
> > "partition-limit-size: 80%" that will expire the older images (but newer
> > than the expire politics) to free the necessary space to make the new
> > fresh image.
> 
> Two initial reactions:
> 
> 1)  Nice idea; I could certainly use such a thing.
> 
> 2)  I don't think that you need to make any changes to dirvish at all.
> Writing a separate expiration script which can parse that line out of a
> config file and then deletes backups as necessary should be quite feasible.
> 

This is a way; a not very easy way :( The main reason to get it into the
dirvish is the facility.

> The most complicated part I can think of (this is all off the top of my
> head, you understand; it bears further thought) is coming up with an
> algorithm for picking which backups to delete that makes sense.  Simply
> getting rid of the oldest wouldn't keep me happy, as I like to keep a
> monthly backup around for quite some time, and would be much happier to
> see a 12-day old daily backup get sacrificed than a 3-month old monthly
> backup.  My first thought would be calculate, for each backup, the
> percentage of the duration between creation and expiration which has
> elapsed and delete backups for which that value is the highest.
> 

Well.. To me is direct that the images could be deleted in a
cronological base. In my experience, it have never occurred a situation
where a old image could be more critical that a recent one.

But this is my experience :)

Joel Franco

> --Jon Radel
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