Hi all,
I have a system with two Quantum SuperLoader 3 auto-changers, both with
an LTO-8 drive each. The same media is readable and writeable by either
drive from either library. Bareos has been working with one library and
drive for some time, but we now want to configure the 2nd library.
The intention is to have jobs able to write to whatever tapes are
available in either library; basically so that two jobs can write at the
same time in order to double throughput. How can we achieve that?
I've configured the SD with two Autochanger and two Device resources,
and the director with two Storage resources that refer to each
autochanger. This allows commands such as "list slots storage=Tape-1",
"update slots storage=Tape-2", and so on.
What's not working is starting a job with storage=Tape-1 vs
storage=Tape-2. What seems to happen is Bareos picks a tape from the
pool that's available in either changer, mounts it in whatever drive can
access it even if it's the other drive/changer to the one requested.
When it's in the other drive/changer, the storage on the volume is
updated to the storage on the job, and things start to fall apart.
For example, I started a job with "run job=MyJob storage=Tape-1". Bareos
selected a tape in the Tape-2 Storage/Autochanger/Device and mounted it
correctly in the wrong Device, then updated the volume record to change
its storage from "Tape-2" to "Tape-1" even though it's actually writing
to the tape via "Tape-2".
Running "update slots storage=Tape-2" fixes this, but only for a while;
Bareos soon forces it back to the wrong storage.
So as far as I can tell the SD is configured correctly and doing what
the Director is telling it to do, but the Director doesn't seem to be
able to tell the two sets of devices apart.
Is there some way around this issue? Can I achieve what I'm trying to do?
Thanks,
Chris
--
Chris Boot
[email protected]
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