I am seeing the same problem.
I have a recently installed bacula system (v2.4.2) installed on ~ 150
Solaris and Linux computers, with a total of ~ 175 jobs that are scheduled
to be run at 18:30 every day.
* I am using the standard schedule to run daily incremental 6 days/week,
and either differential or full backups on the 7-th day at 18:30. Later in
the day, a full backup of the catalog is scheduled at a lower (higher
number) priority every day.
* I have one Solaris 10 system that runs both my single
storage daemon and director daemon as well as an fd daemon.
* My storage system is a Sun/Storagetek Sl500 library with 2 LTO3 drives,
both of which are set to AutoSelect = yes for use by the library. All
jobs are configured to write the the library, which then selects the
appropriate drives. I have 2 tape pools -- Incremental for Incremental
and Differential jobs, and Full for Full backup jobs. All jobs are
configured with SpoolData = yes, and I have spooling enabled for the 2
tape drives. I allow a total of 8 concurrent jobs to be run.
The problem that I am encountering is that I will have 8 incremental jobs
running, 4 assigned to each tape drive, but all jobs (and therefore both
tape drives) are trying to write to the same tape even though I have
multiple available tape drives assigned to the tape pool and in the
library. When this happens, the 4 jobs assigned to the drive without the
tape will hang until the rest of the incremental jobs have finished
writing to the tape drive that has the tape mounted. I then have to
manually release the tape from that drive and mount it in the other drive
to allow the the 4 hung jobs to finish.
My experience seems to indicate that if I have no tapes mounted in
the drives when the backups are scheduled that the system will select
2 incremental tapes, one for each drive. However, if I have an
incremental tape and a full tape loaded in each drive, the system
will try to use the same tape in both drives.
Does anyone have a suggestion before I open a bacula bug report? Thanks.
- Doug N
--
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Doug Neuhauser University of California, Berkeley
doug AT seismo.berkeley DOT edu Berkeley Seismological Laboratory
Office: 510-642-0931 215 McCone Hall # 4760
Fax: 510-643-5811 Berkeley, CA 94720-4760
Remote: 530-752-5615 (Wed,Fri)
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