Hi all,
I've got a tape library with 3xLTO6 drives and 1xLTO4 drive in it. All four
drives are managed by the same library, and the same changer device is used to
load either media type into any drive. I'd like to use them as follows:
1x LTO4 drive free for use by any job (likely to be restores only)
2x LTO6 drives free for use by any job
1x LTO6 drive reserved for administrative tasks, such as restores and bulk
volume labelling
(All four drives could be used to read from LTO4 media, but I'm happy to ignore
that for now to keep the config simpler. The reason we bought an LTO4 drive is
to read from LTO2/3 media)
I've currently have the following config, but it doesn't behave quite as I'd
like:
Autochanger {
Name = tapestore1-autochanger-lto6
Device = drive-0-tapestore1, drive-1-tapestore1
Device = drive-2-tapestore1
Changer Device = /dev/scsi/changer/foo
Changer Command = "/opt/bacula/etc/mtx-changer %c %o %S %a %d"
}
Autochanger {
Name = tapestore1-autochanger-lto4
Device = drive-3-tapestore1
Changer Device = /dev/scsi/changer/foo
Changer Command = "/opt/bacula/etc/mtx-changer %c %o %S %a %d"
}
Device {
Name = drive-0-tapestore1
Archive Device = /dev/rmt/0mbn
Device Type = Tape
Media Type = LTO6
AutoChanger = yes
Removable media = yes;
Drive Index = 0
Maximum Concurrent Jobs = 1
# Drive used for admin tasks, not autoselected for jobs
Autoselect = no
}
Device {
Name = drive-1-tapestore1
Archive Device = /dev/rmt/1mbn
Device Type = Tape
Media Type = LTO6
AutoChanger = yes
Removable media = yes;
Drive Index = 1
Autoselect = yes
}
# Same for drive-2 and drive-3 (LTO4)
All pools are set to reference the Autochanger devices only.
The problems with this setup are:
- I'm not sure how to indicate I want to use a particular drive for a restore
- Selecting drive-0-tapestore1 for label barcodes when prompted doesn't work (I
can't remember the exact message but it's something like . This is directly
related to the Autoselect=no setting as toggling it to yes, or using one of the
other drives does work as expected.
What is the recommended way to setup a drive specifically for restores? Is it
to create a new Storage resource in the director that refers to the specific
Device resource in the SD? And if so, will that work correctly with the
autochanger to load the right tapes into the drive?
Secondly, is it correct to have two autochanger resources to handle the
distinct media types, or is Bacula clever enough to manage both types with a
single resource?
Regards,
Ben Roberts
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