On Mon, Nov 08, 2004 at 04:04:28PM -0600, Frank Smith wrote:
> --On Monday, November 08, 2004 14:36:32 -0600 Casey Milford <cmilfo AT gmail 
> DOT com> wrote:
> 
> > I've finally found reason to join the list.  Up until now I've either
> > not had enough knowledge of Amanda to contribute or not had a big
> > enough issue to warrant a post.
> > 
> > Now I have both.  :)
> > 
> > I need to split several servers off from my main backup group to be
> > backed up to separate tapes.  I have an 8 slot, 1 drive tape drive. 
> > Here's how I decided to split the tapes up:
> > 
> > slot 0-4 All other servers
> > slot 5    Customer 1's servers
> > slot 6    Customer 2's servers
> > slot 7    Customer 3's servers
> > 
> > I've created separate configuration folders for each group of servers.
> >  I sacrificed the cleaning slot I was using to allow M-F backups for
> > the main group.  Cleanings are run by hand each Sunday.  The 3
> > customer slots will be switched out each night.  The 0-4 slots will be
> > switched out each Sunday during the cleaning.  I think the planning so
> > far is sound.  It allows separate backups for the customers while
> > still allowing backups for the main group.  My problem arises when I
> > try to run the backup sets one after the other.  amtape will not allow
> > me to switch to the other sets.  It stays within the current set when
> > asked to switch.  Is there a way to make amtape, amcheck, amdump, etc.
> > switch sets without using something like mtx to switch the tapes
> > between commands?
> 
> So what you are proposing is one config with a 5-slot changer, and three
> configs with a 1-slot changer each, all sharing a single drive?
>     I'm not sure how a 1-slot changer would work in practice (where the
> previous and next tape in that config is the same as the tape loaded, and
> firstslot == lastslot).
>    Also, Amanda leaves the last tape used in the drive, so on each config's
> run the tape in the drive would be from the previous config, and Amanda
> might not know where to put it (the chager might be smart enough to find
> the empty slot, but if you were to have two empty slots for some reason,
> it might not end up in the right one.

What about a 3 slot changer, with shared files (links) between the 3 configs.
If the labelstr was unique for each of the 3 configs, only the correct slot
would be used.

-- 
Jon H. LaBadie                  jon AT jgcomp DOT com
 JG Computing
 4455 Province Line Road        (609) 252-0159
 Princeton, NJ  08540-4322      (609) 683-7220 (fax)