Hello,
2013/12/4 Brice Figureau <brice+bac...@daysofwonder.com>
> Hi,
>
> I'm setting up a brand new bacula configuration (running debian wheezy
> 5.2.6) on new hardware with a powerful LTO-5 autochanger.
> As usual, I'm activating data spooling in the sd configuration like
> this:
> Device {
> Name = neo200s-drive
> Drive Index = 0
> Media Type = LTO-5
> ArchiveDevice = /dev/nst0
> LabelMedia = yes
> RandomAccess = no
> AutomaticMount = yes
> RemovableMedia = yes
> AlwaysOpen = yes
> AutoChanger = yes
> Maximum Spool Size = 50G
> Maximum Block Size = 1032192
> Maximum Network Buffer Size = 65536
> Spool Directory = /var/spool/bacula
> }
>
> (/var/spool/bacula ends up on a 4 drive RAID10 volume).
>
> With 3 concurrent jobs, I observed the that the spool file is at most
> 12GB per job, far from the max 50GB, I've setup.
> Eventually the 3rd job finished, but the 2 remaining jobs were still
> spooled with around 12GB:
>
> 03-Dec 18:44 backup2.internal-sd JobId 14: Spooling data again ...
> 03-Dec 18:45 backup2.internal-sd JobId 14: User specified spool size
> reached.
> 03-Dec 18:45 backup2.internal-sd JobId 14: Writing spooled data to Volume.
> Despooling 11,355,276,196 bytes ...
> 03-Dec 18:50 backup2.internal-sd JobId 14: Despooling elapsed time =
> 00:02:55, Transfer rate = 64.88 M Bytes/second
>
> And at the same time, for the other job:
> 03-Dec 18:47 backup2.internal-sd JobId 15: Spooling data again ...
> 03-Dec 18:48 backup2.internal-sd JobId 15: User specified spool size
> reached.
> 03-Dec 18:48 backup2.internal-sd JobId 15: Writing spooled data to Volume.
> Despooling 12,277,034,372 bytes ...
> 03-Dec 18:53 backup2.internal-sd JobId 15: Despooling elapsed time =
> 00:03:30, Transfer rate = 58.46 M Bytes/second
>
> I'm quite surprised to see that 11GB+12GB=23GB of spool is used, when I
> declared that the max should be 50GB.
>
> I don't have any limitation of the spool size per job (using the
> defaults here).
>
> Does anyone know what rules bacula is using to know when to stop
> spooling?
>
>
I guess there are some other jobs which consume your spool size. Maximum
Spool Size parameter defines maximum for all jobs running on selected
Device.
best regards
--
Radosław Korzeniewski
rados...@korzeniewski.net
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