You could use different pools for full and incremental Backups. So an 
incremental backup won't overwrite a full one.
Or you could set "Maximum Volume Jobs = 7" instead of "Use Volume Once". So you 
will always have your full backup and the incrementals in one volume. You also 
have to adjust Maximum Volumes and Volume Retention.
But your incrementals will still be worthless when overwriting a full backup. I 
guess that's just the way it works.

-----Ursprüngliche Nachricht-----
Von: Konrad Matyas [mailto:konrad.matyas AT mobiteam DOT pl] 
Gesendet: Samstag, 31. Januar 2009 08:35
An: bacula-users AT lists.sourceforge DOT net
Betreff: [Bacula-users] Bacula strategy question

Hello everybody,

I have a question about bacula strategy.
Currently I'm making backups on local partition (sata hard drives in
raid5 configuration). I store 2 FULL backups every week and on all other
days I make Incremental backups.
I keep max 15 volumes.
Below are "parts" from my configuration:

Schedule {
  Name = "DailyCycle"
  Run = Incremental mon at 0:00
  Run = Incremental tue at 0:00
  Run = Incremental wed at 0:00
  Run = Incremental thu at 0:00
  Run = Incremental fri at 0:00
  Run = Incremental sat at 0:00
  Run = Full sun at 1:00
}

Client {
  Name = name-fd
  Address = xxx.xxx.xxx.xxx
  FDPort = 9102
  Catalog = MyCatalog
  Password = ""
  File Retention = 15 days
  Job Retention = 15 days
  AutoPrune = yes
  Maximum Concurrent Jobs = 30
}

Pool {
  Name = PNAME
  Use Volume Once = yes
  Pool Type = Backup
  AutoPrune = yes
  Volume Retention = 15d
  Volume Use Duration = 14d
  Maximum Volumes = 15
  Recycle = yes
  Purge Oldest Volume = yes
  Recycle Oldest Volume = yes
  LabelFormat = "VNAME"
}


The problem is when there are 15 volumes and new backup needs to be done
(situation when one of full backups is the oldest volume). Then bacula
takes the oldest one and "on that place" creats new backup. But the
oldest is a full backup so all incremental backups done after the "FULL"
are then useless.

Maybe my backup strategy is wrong. Has anyone any suggestion what to do
with that problem?

I'll be thankful.

Best regards,
Konrad







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