Here is some output from a mtx command:

[root@darwin libexec]$ /usr/sbin/mtx -f /dev/sg0 status
Storage Changer /dev/sg0:1 Drives, 10 Slots ( 0 Import/Export )
Data Transfer Element 0:Full (Storage Element 1 Loaded):VolumeTag =
   Storage Element 1:Empty
   Storage Element 2:Full :VolumeTag=        
   Storage Element 3:Full :VolumeTag=        
   Storage Element 4:Full :VolumeTag=
   Storage Element 5:Full :VolumeTag=
   Storage Element 6:Full :VolumeTag=
   Storage Element 7:Full :VolumeTag=
   Storage Element 8:Empty
   Storage Element 9:Empty
   Storage Element 10:Empty


So it seems that my changerdev is fine.

I dont have a changer.conf file.  I only have a changer.conf-clean,
changer.conf-access and a changer.conf-slot file.  They all contain 0 in
them.


On Mon, Feb 10, 2003 at 11:51:32AM -0500, Joshua Baker-LePain wrote:
> On Mon, 10 Feb 2003 at 10:07am, Benjamin Herbert wrote
> 
> > I am trying to use the chg-zd-mtx script to contorl the tape changer on
> > an exabyte LTO tape changer.  I am running redhat 7.3.  
> > 
> > Heres is some of the stuff in my amanda.conf:
> > 
> > tpchanger "chg-zd-mtx"  # the tape-changer glue script
> > tapedev "/dev/nst0"     # the no-rewind tape device to be used
> > rawtapedev "/dev/nst0"  # the raw device to be used (ftape only)
> > changerfile "/usr/local/amanda/etc/amanda/test/changer.conf"
> > changerdev "/dev/sg0"
> 
> Are you sure about that changerdev?  For my Overland changer, the tape 
> drive and robotics have separate SCSI IDs.  The tape drive is ID 4, and 
> the robotics are ID 6.  Therefore the tape drive is sg0, and the robotics 
> are sg1.
> 
> > Here is the command that I run:
> > 
> > /usr/local/amanda/libexec/chg-zd-mtx -info
> > 
> > 
> > Here is the output of the command:
> > 
> > [root@XXXXX test]$ /usr/local/amanda/libexec/chg-zd-mtx -info
> > /usr/local/amanda/libexec/chg-zd-mtx: [: : integer expression expected
> > /usr/local/amanda/libexec/chg-zd-mtx: [: -lt: unary operator expected
> >  6 1
> 
> First, can mtx talk to your changer?  What's the output of 'mtx -f 
> /dev/sg0 status' (or sg1, as above).
> 
> If the device is correct, we'll need to see your CHANGER.conf file.
> 
> -- 
> Joshua Baker-LePain
> Department of Biomedical Engineering
> Duke University