Yes, using separate pools would prevent media sharing.
You could also try setting Maximum Concurrent Jobs = 1 in the Device directive
in the Storage Daemon. See:
http://www.bacula.org/7.0.x-manuals/en/main/Storage_Daemon_Configuratio.html#SECTION001730000000000000000
http://www.bacula.org/7.0.x-manuals/en/main/New_Features_in_5_2_13.html#SECTION00451000000000000000
Maximum Volume Jobs is documented as broken when using multiple simultaneous
jobs
(http://www.bacula.org/7.0.x-manuals/en/main/Configuring_Director.html#SECTION0015150000000000000000).
__Martin
>>>>> On Fri, 25 Jul 2014 10:14:54 +0200, tballin said:
>
> Hi,
> thanks for the reply. Yes I have set maximum Jobs to 3. I have two
> drives in one Library witch can (must!) handle two jobs at a time so I
> set the maximum Job for the Storage Daemon/Resource since I though
> that’s the way to go - Actually I would love to spread one job over two
> drives but I have been told that’s not possible.
> I have set maximum Concurrent Jobs to 3 ( in the storage resource, the
> director has 20 )because I have another one 15TB remote job which uses
> spooling. Albeit the 3rd job can spool 3TB of data the third job will
> only start if it can lock a drive. So the maximum number of Jobs I saw
> concurrently running was 2.
>
> If I get you right the "media sharing" would stop if I use different
> pool for every job? I did not do that because all jobs actually backup
> the same snapshot so all expire times are the same - it the same backup
> set. Would that be more like a workaround or is this expected? To me
> "Maximum Volume Jobs = 1" sounds like on any given Volume there will be
> only one job or the a part of one job. And that’s what we need.
>
> Timo
>
> On 07/24/2014 08:28 PM, Martin Simmons wrote:
> > It looks like you have Maximum Concurrent Jobs set to > 1, so you have jobs
> > interleaving on the volumes because they specify the same pool.
> >
> > I don't know how that is supposed to interact with Maximum Volume Jobs = 1,
> > but it looks like it doesn't work. Did you expect it to do something
> > specific?
> >
> > __Martin
> >
> >
> >>>>>> On Thu, 24 Jul 2014 19:11:38 +0200, tballin said:
> >> Hi all,
> >>
> >> we startet using Bacula with a Neo400 ( incl. 2 LTO6 Drives ) for
> >> backup. Although we have quit big amounts of data to backup the job
> >> should be pretty simple since mostly it just needs to copy the files to
> >> tapes for an off-site backup. Since we are using a zfs as file system
> >> bacula has a relaxed time window of one week for the backup.
> >>
> >> But we have one important point that is One Job per Volume ( so we can
> >> take the tapes easily off site and back ). After some interesting
> >> experiences with "purge jobs" our full backup as base for the
> >> incremental was finally done:
> >>
> >> Build OS: x86_64-unknown-linux-gnu redhat
> >> JobId: 65
> >> Job: IncrementalToRevolver02a.2014-07-18_14.10.42_13
> >> Backup Level: Full (upgraded from Incremental)
> >> Client: "shelfspace-fd" 7.0.3 (12May14)
> >> x86_64-unknown-linux-gnu,redhat,
> >> FileSet: "NoahSet_A" 2014-07-11 16:47:40
> >> Pool: "Revolver02-Full" (From Job FullPool override)
> >> Catalog: "MyCatalog" (From Client resource)
> >> Storage: "Neo400" (From Pool resource)
> >> Scheduled time: 18-Jul-2014 14:10:42
> >> Start time: 18-Jul-2014 14:10:42
> >> End time: 24-Jul-2014 07:21:14
> >> Elapsed time: 5 days 17 hours 10 mins 32 secs
> >> Priority: 10
> >> FD Files Written: 11,719,314
> >> SD Files Written: 11,719,314
> >> FD Bytes Written: 24,262,705,996,248 (24.26 TB)
> >> SD Bytes Written: 24,265,651,316,062 (24.26 TB)
> >> Rate: 49131.5 KB/s
> >> Software Compression: None
> >> VSS: no
> >> Encryption: no
> >> Accurate: no
> >> Volume name(s):
> >> RB0104L6|RB0101L6|RB0110L6|RB0107L6|RB0219L6|RB0112L6|RB0109L6|RB0216L6|RB0211L6|RB0210L6|RB0208L6|RB0218L6
> >> Volume Session Id: 14
> >> Volume Session Time: 1405092165
> >> Last Volume Bytes: 2,628,260,877,312 (2.628 TB)
> >> Non-fatal FD errors: 2
> >> SD Errors: 0
> >> FD termination status: OK
> >> SD termination status: OK
> >> Termination: Backup OK -- with warnings
> >>
> >> And for the Second Drive:
> >>
> >>
> >> 20-Jul 05:41 shelfspace-dir JobId 66: Bacula shelfspace-dir 7.0.3
> >> (12May14):
> >> Build OS: x86_64-unknown-linux-gnu redhat
> >> JobId: 66
> >> Job: IncrementalToRevolver02b.2014-07-18_14.10.42_14
> >> Backup Level: Full (upgraded from Incremental)
> >> Client: "shelfspace-fd" 7.0.3 (12May14)
> >> x86_64-unknown-linux-gnu,redhat,
> >> FileSet: "NoahSet_B" 2014-07-11 16:47:40
> >> Pool: "Revolver02-Full" (From Job FullPool override)
> >> Catalog: "MyCatalog" (From Client resource)
> >> Storage: "Neo400" (From Pool resource)
> >> Scheduled time: 18-Jul-2014 14:10:42
> >> Start time: 18-Jul-2014 14:10:46
> >> End time: 20-Jul-2014 05:41:43
> >> Elapsed time: 1 day 15 hours 30 mins 57 secs
> >> Priority: 10
> >> FD Files Written: 1,719,165
> >> SD Files Written: 1,719,165
> >> FD Bytes Written: 6,878,789,531,036 (6.878 TB)
> >> SD Bytes Written: 6,879,192,891,412 (6.879 TB)
> >> Rate: 48354.7 KB/s
> >> Software Compression: None
> >> VSS: no
> >> Encryption: no
> >> Accurate: no
> >> Volume name(s): RB0101L6|RB0110L6|RB0107L6|RB0219L6|RB0112L6
> >> Volume Session Id: 15
> >> Volume Session Time: 1405092165
> >> Last Volume Bytes: 1,699,995,386,880 (1.699 TB)
> >> Non-fatal FD errors: 0
> >> SD Errors: 0
> >> FD termination status: OK
> >> SD termination status: OK
> >> Termination: Backup OK
> >>
> >>
> >> There are on average ~ 2.8TB on every tape. Also when I query the jobs
> >> for a tape I get two jobid 66 and 65 as result.
> >> But when I get the details for the Volume via e.g. llist volume=RB0101L6
> >> it says there is only one job on the volume and ther should be only one
> >> job on the volume ... as far as I understand:
> >>
> >> *llist volume=RB0101L6
> >>
> >> Automatically selected Catalog: MyCatalog
> >>
> >> Using Catalog "MyCatalog"
> >>
> >> MediaId: 20
> >>
> >> VolumeName: RB0101L6
> >>
> >> Slot: 21
> >>
> >> PoolId: 9
> >>
> >> MediaType: LTO-6
> >>
> >> FirstWritten: 2014-07-18 14:13:27
> >>
> >> LastWritten: 2014-07-18 21:30:03
> >>
> >> LabelDate: 2014-07-18 14:10:46
> >>
> >> VolJobs: 1
> >>
> >> VolFiles: 160
> >>
> >> VolBlocks: 49,609,582
> >>
> >> VolMounts: 2
> >>
> >> VolBytes: 3,200,413,418,496
> >>
> >> VolErrors: 0
> >>
> >> VolWrites: 50,849,663
> >>
> >> VolCapacityBytes: 0
> >>
> >> VolStatus: Used
> >>
> >> Enabled: 1
> >>
> >> Recycle: 1
> >>
> >> VolRetention: 3,024,000
> >>
> >> VolUseDuration: 0
> >>
> >> MaxVolJobs: 1
> >>
> >> MaxVolFiles: 0
> >>
> >> MaxVolBytes: 0
> >>
> >> InChanger: 1
> >>
> >> EndFile: 160
> >>
> >> EndBlock: 6,541
> >>
> >> VolParts: 0
> >>
> >> LabelType: 0
> >>
> >> StorageId: 2
> >>
> >> DeviceId: 0
> >>
> >> LocationId: 0
> >>
> >> RecycleCount: 1
> >>
> >> InitialWrite: 0000-00-00 00:00:00
> >>
> >> ScratchPoolId: 0
> >>
> >> RecyclePoolId: 2
> >>
> >> ActionOnPurge: 0
> >>
> >> Comment: NULL
> >>
> >>
> >> Every Pool has the Maximum Volume Jobs = 1 set. I'll admit we are doing
> >> lot of experimenting and purging but this option has always been set.
> >> In total the amount of data wirtten to the Tapes / Job Size is matching
> >> ... more or less. But there are just to many Volumes per Job...
> >>
> >> I am a little clueless here ... I would appreciate any hints.
> >>
> >> With kind regards
> >>
> >> Timo Ballin
> >>
> >>
> >>
> >>
> >>
> >>
> >> ____ ESET 10118 (20140718) ____
> >> The message was checked by ESET Mail Security.
> >>
> >>
> >> ------------------------------------------------------------------------------
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> >> _______________________________________________
> >> Bacula-users mailing list
> >> Bacula-users AT lists.sourceforge DOT net
> >> https://lists.sourceforge.net/lists/listinfo/bacula-users
> >>
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> >
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> > The message was checked by ESET Mail Security.
> >
>
>
> --
> STUDIO RAKETE GmbH
> Timo Ballin, System Administration
> Schomburgstr. 120
> D - 22767 Hamburg
>
> t.ballin AT studiorakete DOT de
> Tel:+49 (0)40 - 380 375 69 - 0
> Fax:+49 (0)40 - 380 375 69 - 99
>
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>
>
> ____ ESET 10118 (20140718) ____
> The message was checked by ESET Mail Security.
>
>
> ------------------------------------------------------------------------------
> Want fast and easy access to all the code in your enterprise? Index and
> search up to 200,000 lines of code with a free copy of Black Duck
> Code Sight - the same software that powers the world's largest code
> search on Ohloh, the Black Duck Open Hub! Try it now.
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> _______________________________________________
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>
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Want fast and easy access to all the code in your enterprise? Index and
search up to 200,000 lines of code with a free copy of Black Duck
Code Sight - the same software that powers the world's largest code
search on Ohloh, the Black Duck Open Hub! Try it now.
http://p.sf.net/sfu/bds
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