Andy,

I had two config that ran concurrently on the same amanda
server, each having access to its own tape, also the tapes
where actually Storedge L9/LTO jukeboxes, so each config
owned a jukebox.

In order to avoid conflicts I was able to segregate my
clients into two groups, one having only local UFS mounted
partitions on the server, the other having partitions that
where non-local to the amanda server, so I was able to avoid
any conflicts on the known amanda TCP and UPD ports without
having to compile and run different amanda binaries for each
config. Also I avoided any chance of putting a single amanda
client in both configs, which would have caused conflict (since
the client will only respond to a single server at any one time
and there is no way to interlock/schedule a common client
between amanda servers).

For added clarity, each jukebox had its own tape pool with
config specific tape labels. I guess you could run a single
jukebox with two drives with unique tape labels, especially
if you restrict the slots per config, but I don't things that
would be necessary since each config would check labels before
writing (but it would save time finding the next tape during the run).

I ran that config for years with no problems.

Not sure if I'm addressing your exact question, if not or you
need follow-up please let me know.

                                                Brian

On Wed, Oct 31, 2007 at 11:02:08AM -0500, Krahn, Anderson wrote:
> Quick question will Amanda work correctly with two different
> configurations, each one using a tape drive running at the same time?
> 
> Ex.
> 
> Data Transfer Element 0:Empty
> 
> Data Transfer Element 1:Full (Storage Element 9 Loaded):VolumeTag =
> EGV010    these are my 2 drives.
> 
> However,
> 
> When I try to run 
> 
> /opt/amanda/server/sbin/amlabel -f FullDB EGV010 slot 9
> 
> Here is the error I get
> 
> "amlabel: could not load slot "9": Drive not ready after 120 seconds,
> rewind said "/dev/rmt/3cn:"Drive not ready after no seconds, rewind said
> "tape"Drive not ready after loaded seconds, rewind said "or"Drive not
> ready after drive seconds, rewind said "offline""
> 
>  
> 
> The tape EGV010 always goes to drive 0 instead of 1. 
> 
> mtx -f /dev/scsi/changer/c5t3d1 status
> 
>   Storage Changer /dev/scsi/changer/c5t3d1:2 Drives, 24 Slots ( 1
> Import/Export )
> 
> Data Transfer Element 0:Full (Storage Element 9 Loaded):VolumeTag =
> EGV010
> 
> Here are the conf files for FullDB
> 
> cat changer.conf
> 
> firstslot=1
> 
> lastslot=23
> 
> driveslot=1
> 
> cleanslot=-1
> 
> autoclean=0
> 
> autocleancount=99
> 
> havereader=1
> 
> offline_before_unload=0
> 
> initial_poll_delay=0
> 
> tapedev "/dev/rmt/3cn"  # the no-rewind tape device to be used
> ***Currently using hardware compression
> 
> changerdev "/dev/scsi/changer/c5t3d1"
> 
> amrecover_changer "/dev/scsi/changer/c5t3d1"
> 
> Thanks
> 
---
   Brian R Cuttler                 brian.cuttler AT wadsworth DOT org
   Computer Systems Support        (v) 518 486-1697
   Wadsworth Center                (f) 518 473-6384
   NYS Department of Health        Help Desk 518 473-0773



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