On 07/25/12 09:55, Sven Tegethoff wrote:
> Hi everybody,
> 
> I've tried to wrap my head around automatic volume recycling, but it 
> seems that my backup strategy isn't quite compatible with Bacula's 
> volume recycling policy, and maybe there's someone out here who knows a 
> solution :)
> 
> I'm backing up multiple systems with multiple tape drives. For each 
> storage, I have a series of tape pools in a classic daily/weekly/monthly 
> backup schedule. Tapes are physically being swapped out every day and 
> stored off-site, which is a requirement. Now, daily tapes are supposed 
> to get overwritten every week, weekly tapes every month, monthly tapes 
> ever year. So far so good, I've got all pools set up with appropriate 
> retention periods so tapes get marked as recycleable in time.
> 
> Now my problem is that bacula always leaves the last tape in 
> "appendable" state, and when the tape gets inserted for its next write 
> cycle, it will not overwrite this tape, but only append to it - even 
> though the retention period of the tape has expired.

Sounds so far as though what you need is "Volume Use Duration".

> I thought I could solve the problem by setting the maximum volume use 
> time to a value that is equal to its retention time - but the volume use 
> time will only be updated AFTER a job has finished, and never BEFORE a 
> job gets started. So the first job in the new cycle will always be 
> appended to last week's backup, no matter what I do.

Wait, you said tapes are swapped out every day.  Did I misunderstand?
Have you tried setting volume use duration to 24 hours?


-- 
  Phil Stracchino, CDK#2     DoD#299792458     ICBM: 43.5607, -71.355
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