> mtx for me counts from 1 for slots.
> 
>  # mtx -f /dev/autochanger1 status
>   Storage Changer /dev/autochanger1:2 Drives, 24 Slots ( 1 Import/Export )
> Data Transfer Element 0:Empty
> Data Transfer Element 1:Full (Storage Element 8 Loaded):VolumeTag = A00020
>       Storage Element 1:Full :VolumeTag=A00030
>       Storage Element 2:Full :VolumeTag=A00052
>       Storage Element 3:Full :VolumeTag=A00058
>       Storage Element 4:Full :VolumeTag=A00053
>       Storage Element 5:Full :VolumeTag=A00023


*sigh* Well that explains it then.  The Bacula Autochanger API therefore
reflects the GNU/Linux mt(4) or st(4) driver numbering from 1.

Psychology majors working on the GNU/Linux SCSI layer?

bsd$ sudo mtx -f /dev/pass0 status
  Storage Changer /dev/pass0:1 Drives, 8 Slots ( 0 Import/Export )
Data Transfer Element 0:Full (Storage Element 6 Loaded):VolumeTag =
000028
      Storage Element 1:Full :VolumeTag=000027
      Storage Element 2:Full :VolumeTag=000001
      Storage Element 3:Full :VolumeTag=000026
      Storage Element 4:Full :VolumeTag=000029
      Storage Element 5:Full :VolumeTag=000024
      Storage Element 6:Empty
      Storage Element 7:Full :VolumeTag=000025
      Storage Element 8:Full :VolumeTag=000022

bsd$ sudo chio stat -Vv
picker 0:  voltag: <:0> avoltag: <:0>
slot 0: <ACCESS,FULL> voltag: <000027:0> avoltag: <:0>
slot 1: <ACCESS,FULL> voltag: <000001:0> avoltag: <:0>
slot 2: <ACCESS,FULL> voltag: <000026:0> avoltag: <:0>
slot 3: <ACCESS,FULL> voltag: <000029:0> avoltag: <:0>
slot 4: <ACCESS,FULL> voltag: <000024:0> avoltag: <:0>
slot 5: <ACCESS> voltag: <:0> avoltag: <:0>
slot 6: <ACCESS,FULL> voltag: <000025:0> avoltag: <:0>
slot 7: <ACCESS,FULL> voltag: <000022:0> avoltag: <:0>
drive 0: <FULL> voltag: <000028:0> avoltag: <:0>

I'd be curious what the Sun/SCO/AIX/HFUX people see on their kernel.

~BAS




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