Hi Randall,
Have you tried the "Prefer Mounted Volumes = no" option? If you want bacula
to write to volumes that are in the same pool, you should configure this
option. This way bacula will detect that your first drive is in use and it
will mount and you a tape on the second one. It is recommended that you
configure your jobs to write to volumes in different pools to avoid
deadlock situations by the storage daemon. If you configure your jobs to
write to volumes in different pools, the Prefer Mounted Volumes is not
necessary.
And it is not possible that more than 1 job writes to the same tape.
Regards,
Ana
On Sun, Mar 30, 2014 at 3:15 PM, Randall Svancara <rsvanc...@gmail.com>wrote:
> Hi,
>
> I am trying to configure a dual drive tape library. My challenge is that
> bacula seems to only use one drive. What determines in bacula when it is
> optimal to use two drives? I am using bacula Version: 5.2.13.
> Additionally I have set "Maximum Concurrent Jobs = 4" in all the relevant
> places, but all this seems to do is allow multiple concurrent jobs run,
> which I have tested and seems to work, but strangely, I was under the
> impression that one job could write to one tape exclusively. But in this
> case, it seems multiple jobs can write to the same tape concurrently or is
> this not correct? Lastly I have specified spool directory, however it is
> never used. Any ideas here would be appreciated or clarity.
>
> I have included the relevant sections below for the bacula-sd.conf
>
> #
> # An autochanger device with two drives
> #
> Autochanger {
> Name = Qualstar
> Device = Drive-1
> Device = Drive-2
> Changer Command = "/opt/bacula/etc/mtx-changer %c %o %S %a %d"
> Changer Device = /dev/changer-sg2
> }
>
> Device {
> Name = Drive-1 #
> Drive Index = 0
> Media Type = LTO6
> Archive Device = /dev/nst1
> AutomaticMount = yes; # when device opened, read it
> AlwaysOpen = yes;
> RemovableMedia = yes;
> RandomAccess = no;
> AutoChanger = yes
> Maximum Spool Size = 100G
> Maximum Block Size = 1032192
> Maximum Network Buffer Size = 65536
> Spool Directory = /var/spool/bacula
> #
> # Enable the Alert command only if you have the mtx package loaded
> # Note, apparently on some systems, tapeinfo resets the SCSI controller
> # thus if you turn this on, make sure it does not reset your SCSI
> # controller. I have never had any problems, and smartctl does
> # not seem to cause such problems.
> #
> Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
> # If you have smartctl, enable this, it has more info than tapeinfo
> # Alert Command = "sh -c 'smartctl -H -l error %c'"
> }
>
> Device {
> Name = Drive-2 #
> Drive Index = 1
> Media Type = LTO6
> Archive Device = /dev/nst0
> AutomaticMount = yes; # when device opened, read it
> AlwaysOpen = yes;
> RemovableMedia = yes;
> RandomAccess = no;
> AutoChanger = yes
> Maximum Spool Size = 100G
> Maximum Block Size = 1032192
> Maximum Network Buffer Size = 65536
> Spool Directory = /var/spool/bacula
> # # Enable the Alert command only if you have the mtx package loaded
> Alert Command = "sh -c 'tapeinfo -f %c |grep TapeAlert|cat'"
> # If you have smartctl, enable this, it has more info than tapeinfo
> # Alert Command = "sh -c 'smartctl -H -l error %c'"
> }
>
>
> --
> Randall Svancara
>
>
>
> ------------------------------------------------------------------------------
>
> _______________________________________________
> Bacula-users mailing list
> Bacula-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bacula-users
>
>
------------------------------------------------------------------------------
_______________________________________________
Bacula-users mailing list
Bacula-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bacula-users
