On Tue, Apr 06, 2010 at 02:36:38PM +0800, Craig Ringer wrote:
> I'm sure many people using disk-based storage find that, like me, they
> have three pools defined for almost every job or at least class of job,
> like this:

You could use standard include ("@") feature of bacula configuration
files, for example:

in /etc/bacula/pool-default-values.conf:
  Storage = "SystemStorage"
  Pool Type = Backup
  Recycle = yes
  AutoPrune = yes
  Volume Use Duration = 1 day
  Recycle Oldest Volume = yes

and in /etc/bacula/bacula-dir.conf:
Pool {
  @/etc/bacula/pool-default-values.conf
  Name = "SystemFullPool"
  Volume Retention = 2 months
  LabelFormat = "SystemFull-"
}
Pool {
  @/etc/bacula/pool-default-values.conf
  Name = "SystemDiffPool"
  Volume Retention = 2 weeks
  LabelFormat = "SystemDiff-"
}
Pool {
  @/etc/bacula/pool-default-values.conf
  Name = "SystemIncrPool"
  Volume Retention = 1 week
  LabelFormat = "SystemIncr-"
}

Much more readable and easier to maintain than original config:

> Pool {
>   Name = "SystemFullPool"
>   Storage = "SystemStorage"
>   Pool Type = Backup
>   Recycle = yes
>   AutoPrune = yes
>   Volume Retention = 2 months
>   Volume Use Duration = 1 day
>   Recycle Oldest Volume = yes
>   LabelFormat = "SystemFull-"
> }
> Pool {
>   Name = "SystemDiffPool"
>   Storage = "SystemStorage"
>   Pool Type = Backup
>   Recycle = yes
>   AutoPrune = yes
>   Volume Retention = 2 weeks
>   Volume Use Duration = 1 day
>   Recycle Oldest Volume = yes
>   LabelFormat = "SystemDiff-"
> }
> Pool {
>   Name = "SystemIncrPool"
>   Storage = "SystemStorage"
>   Pool Type = Backup
>   Recycle = yes
>   AutoPrune = yes
>   Volume Retention = 1 week
>   Volume Use Duration = 1 day
>   Recycle Oldest Volume = yes
>   LabelFormat = "SystemIncr-"
> }
> 

It is even more advanced than including single files, for example you
could use something like:

@|"sh -c 'for f in /etc/bacula/clients.d/*.conf ; do echo @${f} ; done'"

which would include all *.conf files in /etc/bacula/clients.d/

We use that to allow different admins to edit configurations only for
their clients...

Of course you can use any external command here; for example you
could call perl script using DBI which would generate all or part of
your config files from SQL database or for example from nagios
configuration files or whatever...

-- 
Matija Nalis
Odjel racunalno-informacijskih sustava i servisa                                
                                                      
Hrvatska akademska i istrazivacka mreza - CARNet 
Josipa Marohnica 5, 10000 Zagreb
tel. +385 1 6661 616, fax. +385 1 6661 766
www.CARNet.hr

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