NOOB autochanger setup.

[Gregory West]

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
}

[Gregory West]

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

[Bruno Friedmann (bruno-at-bareos)]

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

[Gregory West]

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.

[Gregory West]

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

[Gregory West]

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

[Gregory West]

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.

[Bruno Friedmann (bruno-at-bareos)]

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