Did you try to use the real device /dev/sgXXX for the changer. I've seen
several failure using /dev/sch0 (and redo a change in our documentation
recently)
It's seems kernel/udev rules are filtering essential scsi io command to
manipulate correctly the autochanger.
Recently I've rechange working sch0 to generic sgX device for my
autochanger and everything work correctly since then,
On Monday, 13 April 2026 at 09:13:13 UTC+2 Gregory West wrote:
> I did the mtx command, and it worked perfectly:
> root@backup:~# mtx -f /dev/sch0 status
> Storage Changer /dev/sch0:1 Drives, 8 Slots ( 0 Import/Export ) Data
> Transfer Element 0:Empty
> Storage Element 1:Full :VolumeTag=DBW501L5
> Storage Element 2:Full :VolumeTag=DBW502L5
> Storage Element 3:Empty
> Storage Element 4:Empty
> Storage Element 5:Empty
> Storage Element 6:Empty
> Storage Element 7:Empty
> Storage Element 8:Empty
> root@backup:~#
>
> Greg
> On Sunday, April 12, 2026 at 12:35:41 PM UTC-5 Oleg Cherkasov wrote:
>
>> On 11.04.2026 20:41, Gregory West wrote:
>> > OK now I am really confused. sch0 WAS showing up as cd/dvd now it is
>> > showing up as mediummx. This is after I added bareos to the sudo
>> group.
>> > dumb question. I am running bconsole as root. Is this an issue?
>> > When I try and run bconsole as a generic user get the following: Config
>> > error: Cannot open config file "/etc/bareos/bconsole.conf": Permission
>> > denied
>> >
>> > Going to add user to bearos group.
>> > Greg
>> >
>> > On Saturday, April 11, 2026 at 11:26:36 AM UTC-5 Gregory West wrote:
>> >
>> > The TAPE group is OK, but not the complete story. For some reason
>> > my setup has sch0 (the name given to my autochanger) as a cd/dvd. I
>> > have added CRROM to by bareos user and i still does not work.
>> > Looking into have to change sch0 from CDROM to TAPE.
>> > root@backup:~# lsscsi
>> > [0:0:0:0] tape HP Ultrium 5-SCSI Z6DW /dev/st0
>> > [0:0:0:1] mediumx HP 1x8 G2 AUTOLDR 4.30 /dev/sch0
>> > [3:0:0:0] disk ATA Samsung SSD 850 2B6Q /dev/sda
>> > [4:0:0:0] disk ATA WDC WD5000AAKX-0 1H19 /dev/sdb
>> > [5:0:0:0] cd/dvd HL-DT-ST DVD-RAM GH10N EX02 /dev/sr0
>> > [6:0:0:0] disk ATA WDC WD7501AALS-0 0K05 /dev/sdc
>> >
>> It seems you are on the correct path but need to locate the HP
>> Autoloader device. Have you tried to run as root:
>>
>> mtx -f /dev/sch0 status
>>
>> It shall print the status of the Drive and all slots. If you are not
>> sure about the device name, then try all available devices that look
>> like Autoloader.
>>
>> As far as I can recall, on Linux, I had to update the udev configuration
>> to specify the exact /dev/sg? name using the UUID of the device. If the
>> device is not customized in udev, then after a reboot, the device jumped
>> between /dev/sg{1,2,3}. If you are using `lsscsi -g` then the last
>> column would be the device name you need to try with mtx command.
>>
>> Regarding the bconsole, I always run it as root, and the actual DIR
>> daemon is running as the bareos user. I do not think it is an issue.
>>
>>
>> Cheers,
>> Oleg
>>
>
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