Not sure what is your issue there (bareos user on the system just have to
belong to tape group)
here's a whole definition I use for myself
*cat /etc/bareos/bareos-sd.d/autochanger/autochanger-0.conf
/etc/bareos/bareos-sd.d/device/tapedrive-[0,1].conf*
Autochanger {
Name = "autochanger-0"
# adapt this, to match your storage loader
Changer Device =
/dev/tape/by-id/scsi-1ADIC_Scalar_24_32A6A17932A6A17932A6A179-changer
# an Autochanger can contain multiple drive devices
Device = tapedrive-0
Device = tapedrive-1
Changer Command = "/usr/lib/bareos/scripts/mtx-changer %c %o %S %a %d"
}
Device {
Name = "tapedrive-0"
DeviceType = tape
DriveIndex = 0
Archive Device = /dev/tape/by-id/scsi-32036463934333846-nst
# Archive Device = /dev/nst0
MediaType = LTO8
AutoChanger = yes
AutomaticMount = yes
MaximumFileSize = 10GB
Maximum Concurrent Jobs = 1
Drive Tape Alert Enabled = yes
Drive Crypto Enabled = yes
Query Crypto Status = yes
}
Device {
Name = "tapedrive-1"
DeviceType = tape
DriveIndex = 1
Archive Device = /dev/tape/by-id/scsi-32037353139353635-nst
# Archive Device = /dev/nst1
MediaType = LTO8
AutoChanger = yes
AutomaticMount = yes
MaximumFileSize = 10GB
Maximum Concurrent Jobs = 1
Drive Tape Alert Enabled = yes
Drive Crypto Enabled = yes
Query Crypto Status = yes
}
*ls -lh /dev/tape/by-id/*
total 0
lrwxrwxrwx. 1 root root 9 Apr 13 10:16
scsi-1ADIC_Scalar_24_32A6A17932A6A17932A6A179 -> ../../sg5
lrwxrwxrwx. 1 root root 9 Apr 13 10:16
scsi-1ADIC_Scalar_24_32A6A17932A6A17932A6A179-changer -> ../../sg5
lrwxrwxrwx. 1 root root 9 Apr 13 10:16 scsi-32036463934333846 -> ../../st0
lrwxrwxrwx. 1 root root 10 Apr 13 10:16 scsi-32036463934333846-nst ->
../../nst0
lrwxrwxrwx. 1 root root 9 Apr 13 10:16 scsi-32037353139353635 -> ../../st1
lrwxrwxrwx. 1 root root 10 Apr 13 10:16 scsi-32037353139353635-nst ->
../../nst1
lrwxrwxrwx. 1 root root 9 Apr 13 10:16 scsi-32A6A17932A6A17932A6A179 ->
../../sg5
lrwxrwxrwx. 1 root root 9 Apr 13 10:16 scsi-6F94D0386F -> ../../st0
lrwxrwxrwx. 1 root root 10 Apr 13 10:16 scsi-6F94D0386F-nst -> ../../nst0
lrwxrwxrwx. 1 root root 9 Apr 13 10:16 scsi-7519575675 -> ../../st1
lrwxrwxrwx. 1 root root 10 Apr 13 10:16 scsi-7519575675-nst -> ../../nst1
*lsscsi -g*
[0:0:0:0] disk QEMU QEMU HARDDISK 2.5+ /dev/sda /dev/sg0
[0:0:0:1] disk QEMU QEMU HARDDISK 2.5+ /dev/sdb /dev/sg1
[3:0:0:0] cd/dvd QEMU QEMU DVD-ROM 2.5+ /dev/sr0 /dev/sg2
[7:0:0:0] mediumx ADIC Scalar 24 D.00 /dev/sch0 /dev/sg5
[8:0:0:0] tape IBM ULT3580-TD9 HB91 /dev/st0 /dev/sg3
[9:0:0:0] tape IBM ULT3580-TD9 HB91 /dev/st1 /dev/sg4
on the director the autochanger storage is defined like this
*cat /etc/bareos/bareos-dir.d/storage/autochanger-0.conf*
Storage {
Name = autochanger-0
Address = bareos-sd
Password = "alwayssecret"
Device = autochanger-0
Media Type = LTO8
Auto Changer = yes
Maximum Concurrent Jobs = 2
}
I hope this will help you to understand what's happen on your side.
in /etc/bareos/mtx-changer you can also activate debug mode to log
commands, visible then in /var/log/bareos/mtx.log
On Friday, 10 April 2026 at 21:55:02 UTC+2 Gregory West wrote:
> Finally got what I think is all correct. I was able to stop bareos-sd
> and run the btape test. Everything worked fine in the test. When I
> restart bareos-sd and go into bconsole then issue the command : update
> slots I get the following error:
> *update slots
> Automatically selected Catalog: MyCatalog
> Using Catalog "MyCatalog"
> Automatically selected Storage: Tape
> Connecting to Storage daemon Tape at backup:9103 ...
> 3306 Issuing autochanger "slots" command.
> Device "autochanger-0" has 0 slots.
> No slots in changer to scan.
> *
> Not sure why I am getting this. I tried all the tests at the command
> prompt everything worked fine there. Any suggestions? Probably a
> permissions issue, but no idea where to look for it.
> On Thursday, April 9, 2026 at 1:35:33 PM UTC-5 Gregory West wrote:
>
>> OK making a lot of progress here!!!! Have to thank you for your
>> insights. Managed to do a test with btape. Looks like it passed.
>> When it asked to test the autochanger I said yes and got the following
>> error:
>> Do you wish to continue with the Autochanger test? (y/n): y
>> === Autochanger test ===
>> 3301 Issuing autochanger "loaded" command.
>> 3991 Bad autochanger command: /usr/lib/bareos/scripts/mtx-changer
>> /dev/sg0 loaded 1 /dev/tape/by-id/scsi-35001438004d2b339-nst 0
>> 3991 result="mtx: Request Sense: Long Report=yes
>> ": ERR=Child exited with code 1
>> You must correct this error or the Autochanger will not work.
>> *
>> Can anyone see something obvious? Will keep beating the crap out of
>> this.
>>
>> Greg
>> On Thursday, April 9, 2026 at 12:35:14 PM UTC-5 Gregory West wrote:
>>
>>> Here is the results from the ID list:
>>> root@backup:~# ls /dev/tape/by-id/
>>> scsi-35001438004d2b338 scsi-35001438004d2b338-changer
>>> scsi-35001438004d2b339 scsi-35001438004d2b339-nst scsi-HU1205LUW6
>>> scsi-HU1205LUW6-nst scsi-MXA225Z00B
>>>
>>> From looking at the list the ID would be: scsi-35001438004d2b339-nst.
>>> Or am I totally wrong here?
>>>
>>> Greg
>>> On Thursday, April 9, 2026 at 12:18:17 PM UTC-5 Gregory West wrote:
>>>
>>>> Thank you for that information, I was wondering before. I have
>>>> updates the TapeDrives.conf
>>>> Device {
>>>> Name = tapedrive-0
>>>> DeviceType = tape
>>>> DriveIndex = 0
>>>> ArchiveDevice = /dev/nst0
>>>> .....
>>>> and autochanger-0.conf
>>>> Autochanger {
>>>> Name = autochanger-0
>>>> Changer Device = /dev/sg0
>>>> Device = tapedrive-0
>>>> Changer Command = "/usr/lib/bareos/scripts/mtx-changer %c %o %S %a %d"
>>>> }
>>>> Quick question should the device in the autochanger-0.conf be
>>>> 'tapedrive-0' (the name of the first tape drive) or TapeDrives (the name
>>>> of
>>>> the config file) In time I will have more than one tape drive.
>>>>
>>>> On Thursday, April 9, 2026 at 3:03:23 AM UTC-5 Bruno Friedmann
>>>> (bruno-at-bareos) wrote:
>>>>
>>>>> You can't have both tape device and autochanger pointing to the same
>>>>> scsi target here you are using /dev/sg0
>>>>> Either the changer is sg0 and the drive maybe sg1
>>>>>
>>>>> The tape drive should point the the non-streaming device (usually
>>>>> /dev/nst0 or better to use it's unique id)
>>>>> /dev/tape/by-id/XXXXX
>>>>>
>>>>>
>>>>> On Wednesday, 8 April 2026 at 20:50:34 UTC+2 Gregory West wrote:
>>>>>
>>>>>> I found one issue in the content of the /autochangers dir. An extra
>>>>>> .conf file that should not be there. File deleted bareos-sd restarted
>>>>>> now
>>>>>> getting the following error:
>>>>>> 3910 Unable to open device ""tapedrive-0" (/dev/sg0)":
>>>>>> ERR=backends/generic_tape_device.cc:130 Unable to open device
>>>>>> "tapedrive-0"
>>>>>> (/dev/sg0): ERR=Invalid argument
>>>>>>
>>>>>> On Wednesday, April 8, 2026 at 1:43:55 PM UTC-5 Gregory West wrote:
>>>>>>
>>>>>>> I am new to Bareos, and using an autochanger. And yes I am a
>>>>>>> gluten for punishment. I have the following config files (see below).
>>>>>>> When I do a * label -> 2: Tape bconsole seems to just sit there.
>>>>>>> Obviously I have something wrong in my configs. I just can not
>>>>>>> figure
>>>>>>> what. Any assistance would be great.
>>>>>>>
>>>>>>> Greg
>>>>>>> /etc/bareos/bareos-dir.d/storage/Tape.conf
>>>>>>> Storage {
>>>>>>> Name = Tape
>>>>>>> Address = backup # N.B. Use a fully qualified name
>>>>>>> here (do not use "localhost" here).
>>>>>>> Password = " the ultra secret password "
>>>>>>> Device = autochanger-0
>>>>>>> Media Type = LTO
>>>>>>> Auto Changer = yes
>>>>>>> }
>>>>>>>
>>>>>>> /etc/bareos/bareos-sd.d/autochanger/autochanger-0.conf
>>>>>>> Autochanger {
>>>>>>> Name = autochanger-0
>>>>>>> Changer Device = /dev/sg0
>>>>>>> Device = tapedrive-0
>>>>>>> Changer Command = "/usr/lib/bareos/scripts/mtx-changer %c %o %S %a
>>>>>>> %d"
>>>>>>> }
>>>>>>>
>>>>>>> /etc/bareos/bareos-sd.d/device/tapedrives.conf
>>>>>>> Device {
>>>>>>> Name = tapedrive-0
>>>>>>> DeviceType = tape
>>>>>>> DriveIndex = 0
>>>>>>> ArchiveDevice = /dev/sg0
>>>>>>> MediaType = LTO
>>>>>>> AutoChanger = yes # default: no
>>>>>>> AutomaticMount = yes # default: no
>>>>>>> MaximumFileSize = 10GB # default: 1000000000 (1GB)
>>>>>>> LabelMedia = yes
>>>>>>> RemovableMedia = yes
>>>>>>> Autoselect = yes
>>>>>>> }
>>>>>>>
>>>>>>
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