I've run into a similar problem that he seems to talk about. When I
started suing Bacula, I set Volume Use Duration to 24 hours for my
monthly back-ups because I want to be able to take the tapes off site
and not have to worry about mixing months. Well, our fulls took longer
than 24 hours to complete, so we would have a half empty tape marked as
used because 24 hours had elapsed since it started writing. The back-up
would continue on the next tape which would have fit on the previous
tape. For us upping the Volume Use Duration to 1 week solved the
problem, but where time is a bit more critical I can see where he is
coming from. To say use a tape as long as it has been last written to in
x number of hours would help some of the jobs that take a long time from
start to finish (i.e. a lot of jobs).
Robert LeBlanc
College of Life Sciences Computer Support
Brigham Young University
(801) 422-1882
leblanc AT byu DOT edu
> -----Original Message-----
> From: Jean Gobin [mailto:jgobin AT strozllc DOT com]
> Sent: Wednesday, February 11, 2009 2:30 PM
> To: Kern Sibbald; bacula-devel AT lists.sourceforge DOT net
> Cc: bacula-users
> Subject: Re: [Bacula-users] [Bacula-devel] Feature Request:
> Implementan'Volume Append Duration' pool directive
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> I think what he wants is a way to make sure a tape is closed to, say,
> start a week with a fresh tape.
>
> Pretty easy to do with different pools/schedules/jobs actually.
>
>
>
>
>
> Jean F. Gobin
> Network Administrator
>
> Tel: 212.542.3175
> Mobile: 917.213.2532
> Fax: 212.981.6545
>
> 32 Avenue of the Americas, 4th Floor, New York, NY 10013
>
>
> jgobin AT strozllc DOT com
> www.strozllc.com
>
> S T R O Z F R I E D B E R G
>
> TURNING INFORMATION INTO INTELLIGENCE
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>
>
> This message is for the named person's use only. It may contain
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> - -----Original Message-----
> From: Kern Sibbald [mailto:kern AT sibbald DOT com]
> Sent: Wednesday, February 11, 2009 4:20 PM
> To: bacula-devel AT lists.sourceforge DOT net
> Cc: bacula-users
> Subject: Re: [Bacula-users] [Bacula-devel] Feature Request: Implement
> an'Volume Append Duration' pool directive
>
> Unfortunately, I don't understand the explanation below -- more
> precisely, I don't understand what it fixes. Can anyone explain the
> need for this Feature Request to me?
>
> I just cannot grasp what it serves to mark a tape Used when it has
been
> unused for a certain period.
>
> It also seems to me that ANDing together two different directives is a
> new concept, which could add complexity to the existing plethera of
> directives.
>
> Regards,
>
> Kern
>
> On Wednesday 11 February 2009 18:38:15 Brian Debelius wrote:
> > I rotate sets of tapes each day. I would like the last tape used in
> > the backup to be marked used after a certain amount of time has
> > elapsed. It matters not to me when the volume was first written to.
> > For me, Volume use duration marks tapes used too early if there is a
> > hiccup in the backup run (and then requires an extra tape when none
> it
> > needed) or too late and bacula wants to use the last tape for the
> next backup run.
> >
> > Kern Sibbald wrote:
> > > I don't see the need for this feature. With the current code,
> there
> > > is no harm if the tape is marked used while a job is running, so
> > > please explain why this feature is needed.
> > >
> > > Regards,
> > >
> > > Kern
> > >
> > >> Item 1: Implement an 'Volume Append Duration' pool directive
> > >>
> > >> Origin: Brian Debelius, bdebelius at intelesyscorp.com
> > >>
> > >> Date: 5 February 2009
> > >>
> > >> What: An 'Volume Append Duration' pool directive. This
directive
> > >> would set a window of time after the last write to a tape, after
> > >> which the tape is marked used. This would be a complement to the
> > >> Volume Use Duration directive.
> > >>
> > >> Why: Sometimes when a job pauses for whatever reason, the backup
> > >> run is interrupted long enough for the Volume Use Duration to be
> > >> exceeded and the currently loaded tape is mark used before the
> > >> entire backup run is complete. With the Volume Append Duration,
I
> > >> can set the tape to be marked used after x hours of no use. This
> > >> would give more flexibility in determining when a tape gets
marked
> used.
> > >>
> > >> Notes: Volume Append Duration or Volume Use Duration may be
used,
> > >> OR both may be used in a pool definition. If both are used then
> > >> then they are ANDED together, in that they both must be true for
> > >> the tape to be marked used.
> > >
> > > Best regards, Kern
> >
> >
>
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