Hi Bruno,
Thanks for explaining and helping with so much details. I must say I am still a
bit confused but at least I managed to get one volume to be used per job. So
each job has now its own volume written on the file system. My Incremental pool
looks like that now:
Pool {
Name = Incremental
Pool Type = Backup
Recycle = yes # Bareos can automatically recycle Volumes
AutoPrune = yes # Prune expired volumes
Volume Retention = 30 days # How long should the Incremental Backups
Label Format = "Incremental-" # Volumes will be labeled "Incremental-
Maximum Volume Jobs = 1 # we put only one job per media
}
Now I noticed that my previous volumes before this change are not automatically
adapted to these new settings. What do I need to do in that case?
Regards
John
On Tuesday, March 15, 2016 at 9:38:24 PM UTC+1, Bruno Friedmann wrote:
> On mardi, 15 mars 2016 13.00:19 h CET John Naggets wrote:
> > Hi Bruno,
> >
> > Thanks for your example but somehow I am not sure about the "Maximum
> > Volumes = 1" parameter. If I understand correctly this parameter it means I
> > would have only one single volume or file respectively in my pool?
> >
> > Because I am using the default config of bareos with 3 pools: Full,
> > Incremental and Differential and having only one single file does not make
> > sense.
> >
> > Regards
> > John
> >
>
> For sure my example was addressing only one case, having one volune for one
> job in one pool, with one device storage.
> (typical setup for customer who want a job for each week)
> Which give me 5 files
>
> One of the hard thing to understand (at least at the beginning) is that
> there's not a one fixed way to do and organize your
> backup with Bareos, you can be really creative :-)
>
> So just an example in your case (but as I didn't have all the elements, don't
> forget to taint that with a grain of salt)
> I will take the simple setup with one dir, one sd, one client
>
> You want for Example a Full pool for 12 months so you setup the pool to
> handle 12 volumes
> with a retention time of a bit less than one year.
> The full job will goes there, and one full pro month for one job
> Then on you device storage you will have 12 media
>
> Differential will handle 4-5 weeks at you discretion I prefer 5
> So the pool has retention period of 28 days, and 5 volumes
> Device like for month
>
> Incremental will run for 7 days so you create a pool with retention time for
> 6.5 days
> and limit to 7 volumes.
>
> All of them will normally have one storage device.
>
> This is one way of doing things.
>
> You can imagine differents things, like having a pool days (where on sunday
> you have a full job
> and then 6 incremental) this job use one pool one storage one type of media
> Then you add another pool which contain diff (weeks) and another one for full
> (months)
> using another time retention (weeks 28 days), month (11.5 months) but share
> another storage
> device and media type
>
> :-) And now I'm pretty sure I've lost you ....
>
> There's one golden rules, on which you should make all your configuration :
> What I want to restore, for how long, and how complicated/speed.
>
> This is your "sla", each time you modify your configuration, take your time
> to check if you comply to what you decide is good for your restores.
>
>
> > On Tuesday, March 15, 2016 at 7:18:45 AM UTC+1, Bruno Friedmann wrote:
> > > On samedi, 12 mars 2016 12.35:22 h CET John Naggets wrote:
> > > > Hello,
> > > >
> > > > In the default director config of bareos the three pools full,
> > > > differential and incremental all use one volume to store many jobs as
> > > > long as the max volume bytes has not been reached.
> > > >
> > > > So I was wondering is this because of effeciency? Because I was
> > > > thinking, that it might be better to have one volume per job instead?
> > > >
> > > > By the way I am using file based storage and no tapes, so that would
> > > > mean I would have one file per job.
> > > >
> > > > Regards
> > > > John
> > > >
> > > >
> > > Hi John, in case you didn't find it.
> > >
> > > In pool definition you can use
> > >
> > > For example to have only one media with one job in a pool WEEKNN (01-05)
> > > you can setup
> > >
> > > Maximum Volumes = 1 # We use one media in weekNN pool
> > > Maximum Volume Jobs = 1 # we put only one job per media
> > >
> > > It is a valid different way of doing things.
> > >
> >
> >
>
>
> --
>
> Bruno Friedmann
> Ioda-Net Sàrl www.ioda-net.ch
>
> openSUSE Member, fsfe fellowship
> GPG KEY : D5C9B751C4653227
> irc: tigerfoot
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