> What happens if you define an autochanger resource and make
> the two drives part of an autochanger? Even though there is
> no _true_ autochanger, it seems to me that the logic would be
> there to make it do what you want.
>
I don't see how this would work, since an autochanger is a single
physical device (eg: /dev/nsa0) whereas the two tape drives are two
separate physical devices (/dev/nsa0 and /dev/nsa1). The autochanger
setup would just send a signal to the single device to insert a new
tape, but I need to be able to overflow onto a second physical device.
>From what I can see, this can't be done currently. Logically, it seems
that in order for this to work, bacula would need a new resource type in
the Storage Daemon config. Possibly a "DevPool" resource. In Backup
Exec, all devices in a pool needed to be the same, but because of the
way bacula works it doesn't seem like this would be a necessity. A
pseudo-example might look like this:
DevPool {
Name = "DevPool1"
...
}
Device (
Name = "TapeDrive1"
DevPool = "DevPool1"
DevPoolPriority = 1
...
}
Device (
Name = "TapeDrive2"
DevPool = "DevPool1"
DevPoolPriority = 2
...
}
That could create a device pool that could be referenced as a backup
device in a job (the where), which would backup first to the lowest
DevPoolPriority device. When that device is full, it will begin using
the second lowest DevPoolPriority device, etc. Just sort of a wishlist
sort of thing. Anyone else think this would be a good thing? It would
save on having to purchase an autoloader if you already have multiple
independent tape drives.
I'll stop dreaming now.
-DH
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