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
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