On Jan 28, 2013, at 10:21 AM, stefano scotti wrote:
>
> Hi everybody,
>
> I've been using Bacula for 1 year, before then i used to write my own scripts.
> I see, and correct me if i am wrong, that bacula allow only a maximum of 3
> backup levels:
>
> Level 0: Full
> Level 1: Differential
> Level 2: Incremental
>
> This means a maximum of 3 pools per job.
I consider Pools to be a collection of Volumes with similar attributes. Stop
thinking about levels. Start thinking about retention.
> Now, if i have to implement this example of recovery schema:
>
> Every month for a year
> Every week for 6 months
> Every day for a month
> Every 3 hours for 2 days
I think the above corresponds to
> Every month for a year FULL
> Every week for 6 months DIFFERENTIAL
> Every day for a month INCREMENTAL
> Every 3 hours for 2 days INCREMENTAL
With different retention times on each
It sounds like you want four pools
FULL - retain 1 year, scheduled to run monthly
DIFF - retain 6 months, scheduled to run weekly
INCRMONTH - retain 1 month, scheduled to run daily
INCR2DAYS - retain 2 days, schedule to run every 3 hours
Does that help you?
First, what is your goal in running incrementals every 3 hours? And then again
daily?
> There are 4 different rotation rules and schedules... not three.
> How am i supposed to solve this?
>
> With my own scripts, i would define 4 pools, and a job type for each pool:
>
> Level 0 Pool Type:Full
> Level 1 Pool Type:Differential
> Level 2 Pool Type:Incremental
> Level 3 Pool Type:Incremental
We came to the same conclusion, but stop thinking about level.
You should also look at virtual backups.
> Every pool with his own rotation rules which based on the recovery schema,
> and a job type for each pool.
>
> In my opinion it is wrong to bind the concept of job type and the concept of
> pool, they are 2 different things.
What do you mean by Job Type here? Job type is backup, restore, copy/migrate.
> I use a pool to define a group of volumes and their rotation rules, i
> specify a job type to define if those volumes will contain an
> incremental,differential or full backup.
>
> I hope i'm wrong with this and that i wasn't able to find the correct
> solution which Bacula proposes, if this is the case please help me to throw
> light on that. \
I'm guessing at the schedule, and using mine as a starting point:
Schedule {
Name = "WeeklyCycle"
Run = Level=Full 1st sun at 5:55
Run = Level=Differential 2nd-5th sun at 5:55
Run = Level=Incremental mon-sat at 5:55
}
Alter mine to become:
Schedule {
Name = "WeeklyCycle"
Run = Level=Full 1st sun at 5:55
Run = Level=Differential 2nd-5th sun at 5:55
Run = Level=Incremental IncrementalPool=MONTH mon-sat at 5:55
Run = Level=Incremental IncrementalPool=INCR2DAYS daily at 0, 3, 6, 9, 12, 15,
18, 21
}}
That should give you a starting point. Sorry it's not more complete. Others
might have better ideas. there…
--
Dan Langille - http://langille.org
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