Thanks for the explanation Josh. Very kind of you. On Monday 18 December 2006 18:09, Josh Fisher wrote: > jbrsubscribe wrote: > > <snip> > > Thanks very much for responding to my questions and for posting the > > updated HOWTO. I managed to get it working.. it looks good! > > My only remaining problem is that I cannot get it to create any slots on > > drive-1. Whenever I run "label barcodes", regardless of the drive number > > I use, the slots are always created on drive-0. > > How can I get it to use drive-1 as well? > > Well, they are initially created on drive-0, but it does not matter > which drive the volumes in the "slots" are created on. Once created, a > volume from any slot can be loaded into any available drive. The Bacula > Storage Daemon decides which drive of a multi-drive changer to load a > slot's volume into. It appears that Bacula does not do any kind of "load > balancing", (for lack of a better term), but simply chooses the lowest > available drive index. In other words, drive-1 will only be used if > drive-0 already has a volume loaded and that volume is opened for > reading or writing. For example, let's say drive-1 is empty and drive-0 > has the volume from slot-4 loaded, but that volume is not currently > being used by any active job. If you run a job and Bacula determines > that it needs the volume from slot-2, then it will not load slot-2 into > the empty drive-1. Instead it will unload the volume in drive-0 back > into slot-4, then load the needed volume in slot-2 into drive-0. > > Bottom line: You must run two jobs concurrently to make use of drive-1. > For the disk-based virtual changer, the only reason to have more than > one virtual drive is if you want to run multiple jobs concurrently.
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