Where is the changer defined?

# ls -l
total 68
-rw-rw----  1 backup backup 19493 Mar 24 07:42 amanda.conf
-rw-r--r--  1 backup backup  1267 May 16 09:35 changer
-rw-------  1 backup backup     5 May 17 15:15 changer-access
-rw-------  1 backup backup     0 May 16 07:34 changer-barcodes
-rw-------  1 backup backup     2 May  1  2005 changer-clean
-rw-------  1 backup backup     3 May 17 15:17 changer-slot

-rwxr-xr-x  1 backup backup  9726 Apr 29  2005 chg-zd-mtx
-rw-r--r--  1 root   root    2529 May  5 16:02 disklist
-rw-------  1 backup backup   720 May 12 00:00 tapelist
-rw-------  1 backup backup   713 Apr  9 16:32 tapelist.amlabel
-rw-------  1 backup backup   720 Nov 30 01:15 tapelist.today.0
-rw-------  1 backup backup   720 May 12 00:00 tapelist.yesterday

# cat amanda.conf
org "DailySet1"
mailto "admin AT genetests DOT org"
dumpuser "backup"
inparallel 8
netusage 16384 Kbps
dumpcycle 10 days
runspercycle 10
tapecycle 30 tapes
bumpsize 20 Mb
bumpdays 1
bumpmult 4
etimeout 900
dtimeout 3600
ctimeout 900
tapebufs 20
runtapes 10
tpchanger "chg-zd-mtx"  # the tape-changer glue script
tapedev "/dev/nst0"
changerfile "/etc/amanda/DailySet1/changer"
changerdev "/dev/sg0"
tapetype v23
labelstr "^[A-H]00000[0-9][0-9]*$"
infofile "/var/lib/amanda/DailySet1/curinfo"
logdir "/var/lib/amanda/DailySet1"
indexdir "/var/lib/amanda/DailySet1/index"
define tapetype v23 {
    comment "Exabyte VXA-2 v23"
    length 76550 mbytes
    filemark 3951 kbytes
    speed 3943 kps
}
define dumptype global {
    comment "Global definitions"
    index yes
    maxdumps 6
}
define dumptype always-full {
    global
    comment "Full dump of this filesystem always"
    compress none
    priority high
}
define dumptype smbclient {
        program "GNUTAR"
        comment "Samba shares dumped with tar and no compression"
        options no-compress
        priority medium
}
define dumptype root-tar {
    global
    program "GNUTAR"
    comment "root partitions dumped with tar"
    compress none
    index
    exclude list "/usr/lib/amanda/exclude.gtar"
    priority low
}
define dumptype user-tar {
    root-tar
    comment "user partitions dumped with tar"
    priority medium
}
define dumptype high-tar {
    root-tar
    comment "partitions dumped with tar"
    priority high
}
define dumptype comp-root-tar {
    root-tar
    comment "Root partitions with compression"
    compress client fast
}
define dumptype comp-high-tar {
    root-tar
    comment "partitions with compression"
    compress client best
    priority high
}
define dumptype comp-user-tar {
    user-tar
    compress client fast
}
define dumptype holding-disk {
    global
    comment "The master-host holding disk itself"
    holdingdisk no # do not use the holding disk
    priority medium
}
define dumptype comp-user {
    global
    comment "Non-root partitions on reasonably fast machines"
    compress client fast
    priority medium
}
define dumptype nocomp-user {
    comp-user
    comment "Non-root partitions on slow machines"
    compress none
}
define dumptype comp-root {
    global
    comment "Root partitions with compression"
    compress client fast
    priority low
}
define dumptype nocomp-root {
    comp-root
    comment "Root partitions without compression"
    compress none
}
define dumptype comp-high {
    global
    comment "very important partitions on fast machines"
    compress client best
    priority high
}
define dumptype nocomp-high {
    comp-high
    comment "very important partitions on slow machines"
    compress none
}
define dumptype nocomp-test {
    global
    comment "test dump without compression, no /etc/dumpdates recording"
    compress none
    record no
    priority medium
}
define dumptype comp-test {
    nocomp-test
    comment "test dump with compression, no /etc/dumpdates recording"
    compress client fast
}
define interface local {
    comment "a local disk"
    use 3000 kbps
}
define interface eth0 {
    comment "100 Mbps ethernet"
    use 8192 kbps
}
holdingdisk DailySet1 {
        comment "Gonzo"
        directory "/backup/amanda"
        use -1G
        chunksize 4G
}

The errors...

~$ amcheck DailySet1
Amanda Tape Server Host Check
-----------------------------
Holding disk /backup/amanda: 165817748 kB disk space available, using
164769172 kB
slot 3: not an amanda tape (Invalid argument)
slot 4: not an amanda tape (Invalid argument)
slot 5: not an amanda tape (Invalid argument)
slot 6: not an amanda tape (Invalid argument)
slot 7: not an amanda tape (Invalid argument)
slot 8: not an amanda tape (Invalid argument)
slot 9: not an amanda tape (Invalid argument)
slot 10: not an amanda tape (Invalid argument)
slot 1: not an amanda tape (Invalid argument)
slot 2: not an amanda tape (Invalid argument)

       (expecting tape B0000003 or a new tape)
<client check snipped>
(brought to you by Amanda 2.5.0p2)

And

~$ amtape DailySet1 update
changer: got exit: 0 str: 2 10 1 1
changer_query: changer return was 10 1 1
changer_query: searchable = 1
amtape: scanning all 10 slots in tape-changer rack:
changer_find: looking for NULL changer is searchable = 1
changer: got exit: 0 str: 2 /dev/nst0
slot 2: not an amanda tape (Invalid argument)
changer: got exit: 0 str: 3 /dev/nst0
slot 3: not an amanda tape (Invalid argument)

Where is "NULL changer" defined *if not in amanda.conf, then where????*

mtx status reports the tape barcode labels accurately read.

The compile options were copied from the previous version and updated as
required to match the new options.

I'm using chg-zd-mtx with an Exabyte VXA PacketLoader 1x10 1U.  Should I
be using something else?

TIA

--
Brad Willson, Sr. Computer Specialist
UW GeneTests, UW Box: 358735
EM: bwil150n AT u.washington DOT edu
W: 206.221.4674, C: 425.891.2732
http://www.genetests.org