Bacula-users

Re: [Bacula-users] volume retention question

2008-08-25 10:37:57
Subject: Re: [Bacula-users] volume retention question
From: Mikel Jimenez <mikel AT irontec DOT com>
To: Ronald Buder <rbuder AT proficom-ag DOT de>
Date: Mon, 25 Aug 2008 16:37:27 +0200
Mikel Jimenez escribió:
> Ronald Buder wrote:
>   
>>> Mikel Jimenez wrote:
>>>     
>>>       
>>>> Ronald Buder wrote:
>>>>
>>>>       
>>>>         
>>>>> Hi
>>>>>
>>>>>
>>>>>
>>>>>         
>>>>>           
>>>>>> Hello
>>>>>> What happend if I make full backup day 1 of the month and
>>>>>> incremental
>>>>>> backups 2-30th and I have incremental volume retention to 21 days?
>>>>>>
>>>>>> The 28th of the month what I can recover?
>>>>>>
>>>>>>
>>>>>>           
>>>>>>             
>>>>> As with every other backup system, Bacula should eventually notice
>>>>> the
>>>>> gap in the incrementals and perform a full backup at the 23rd. I
>>>>> havn't
>>>>> testet that scenario and would not dare do so in a production
>>>>> environment. I would, depending on the activity of the client, also
>>>>> recommend differential backups, say once a week. Incrementals always
>>>>> refer to the last incremental, differentials refer to the last full
>>>>> or
>>>>> differential backup. Give it a differential job, say on the 14th
>>>>> (halb a
>>>>> month) and you're good to go.
>>>>>
>>>>>
>>>>>
>>>>>         
>>>>>           
>>>>>> Thanks
>>>>>>
>>>>>>
>>>>>>           
>>>>>>             
>>>>> You're welcome.
>>>>>
>>>>> Regards, Ronald
>>>>>
>>>>>
>>>>>
>>>>>         
>>>>>           
>>>> what you recommend me?
>>>> I want to have the capacity to watch a system state for 21 days and no
>>>> more, I want to volumes go recycling, and no have memory of that
>>>> system
>>>> more than 21 days
>>>>       
>>>>         
>> I'm having a hard time to understand, what you want. If you run a full
>> backup every 1st of the month and keep running incremental backups you
>> will run into trouble after the 21st day of incremental backups. Bacula
>> will notice the gap and run a new full backup. Like I said, I'd resort
>> to differential jobs...
>>
>>   
>>     
>>> Some help please
>>>     
>>>       
>> I'm trying, I'm trying...
>>
>>   
>>     
> Sorry for my english
>
> Forgot all that I say.
>
> I want the capability to select files no more than 21 days of one job, 
> and I want that, that volumes be recycled after 21 days(max use time (23 
> hours))
>
> Is that possible?
>
> Thanks!!
>
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>   
Here my configuration of pools and shecules
Pool {
  Name = pool_incr
  Pool Type = Backup
  Recycle = yes
  AutoPrune = yes
  Volume Retention = 25 days
  Label Format = "Incr-"
  Volume Use Duration = 23 hours
  Maximum Volume Bytes = 4G
}

Pool {
  Name = pool_full
  Pool Type = Backup
  Recycle = yes
  AutoPrune = yes
  Volume Retention = 2 months
  Label Format = "Full-"
  Use Volume Once = yes
  Maximum Volume Bytes = 5G
}

Schedule {
  Name = "20:00-00:00-1"
  Run = Level = Incremental mon-sat at 20:00
  Run = Level = Full 1st sun at 00:00
}

My objetive is to have memory of a server only (and always) for 21 days, 
and full snapshots for 2 months. (1st January, 1st February for example, 
and February2-22 incrementals)

What happend 23rd of February?

Is differential backup my solution?

Do you understand my explication? (sorry for my english)



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