Hello,
18.11.2009 10:06, Jim Barber wrote:
> Thanks Arno.
>
> Is this better?
Looks quite good.
I hope this one is accepted and implemented :-)
Cheers,
Arno
> If so I'll clean out all other text except the feature request and submit it
> to bacula-devel
>
> --------------------------
>
> Item ?: Allow Schedule Resource to override 'Next Pool'
>
> Date: 18 November 2009
>
> Origin: Jim Barber. jim.barber AT ddihealth DOT com
>
> Status: New request
>
> What: Allow the Schedule resource to define a NextPool= statement
> to override the NextPool statement of the pool defined in the job.
>
> Why: I have an incremental pool that each week gets consolidated into a
> full pool via a VirtualFull job. The 'Next Pool' directive of the
> incremental pool defines the location of the full pool.
>
> The following week, the next VirtualFull backup will run. It will
> read the previous full backups and incremental backups since then,
> to create new full backups. It is important that the VirtualFull
> backup does not try to write to the same tape that the previous
> weeks full backup wrote to and left in Append status. Otherwise you
> could end up with the one tape trying to be read and written and
> dead-lock.
>
> At the moment I have a hack to get around this. An Admin job calls
> an external command that runs a SQL update to find any tapes in the
> full pool with an APPEND status and change it to USED. This runs
> after the full backups have been done.
>
> Instead I'd like to create two full pools. One for even weeks and
> one for odd weeks of the year. That way, even week virtual full
> backups could consolidate odd week virtual full backups with the
> latest incremental backups. And the odd week virtual full backups
> could consolidate the even week full backups with the latest
> incremental backups.
>
> The trouble is that the Incremental pool can only define one Next
> Pool. I can't have it toggle the Next Pool directive from odd to
> even, week to week. Unless I could override it from the schedule.
>
> Doing that would mean I could ditch my SQL hack to manipulate the
> tape status. It will also be less wasteful of tapes, since I won't
> have partially filled USED tapes throughout my library.
>
> There are possibly many uses for such an override that I haven't
> thought about.
>
> Regards,
>
> ----------
> Jim Barber
> DDI Health
>
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--
Arno Lehmann
IT-Service Lehmann
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