Re: [Bacula-users] vchanger device not in SD Device resources

Hi again,

my apologies for posting this with the incorrect subject line. After a lot of research, I found that the "No volumes found to label" error was caused by an error in the group configuration for the user which bacula-sd runs as. I have been following the fantastic instructions at http://www.revpol.com/node/140?page=show which suggest running vchanger as user=bacula and group=disk. However, bacula-sd could not access the files referenced by the barcodes because the default primary group for the user bacula was set to group=bacula. On some systems this may also be group=tape. The solution is to ensure that the user/group combination for the volume owner, bacula-sd and vchanger are all the same.

You can view the user as which daemons are running using "ps aux | grep bacula".

I'm not particularly adept at Linux, so I found these instructions on setting managing users and groups particularly useful.

http://www.howtogeek.com/50787/add-a-user-to-a-group-or-second-group-on-linux/

Cheers,

Leon

On Mon, Feb 25, 2013 at 12:53 PM, Leon White <leon.white AT greenpeace DOT org> wrote:

Hi,

I am new to bacula and trying to set up a system which will backup our 3 NAS towers to disks using the vchanger utility. We use an eSata changer with 1 drive only - quite a simple configuration. It took a while, but vchanger now works as advertised in the testing chapter of the documentation, and I am currently testing it with only 3 small slots configured to see how the drive swapping works in practice. However, I am not able to convince bacula to label the volumes using the label barcodes or update slots commands, and backup jobs hang waiting for me to issue a label command. The documentation informs me I should not enter volume labels for autochangers manually.

The errors:

*label barcodes
Automatically selected Catalog: MyCatalog
Using Catalog "MyCatalog"
Automatically selected Storage: gpea-backup

Connecting to Storage daemon gpea-backup at 192.168.85.55:9103 ...
3306 Issuing autochanger "slots" command.
Device "vantec-nexstar" has 3 slots.

Connecting to Storage daemon gpea-backup at 192.168.85.55:9103 ...
3306 Issuing autochanger "list" command.
No Volumes found to label, or no barcodes.

Following a run command:
25-Feb 12:47 dell-backup-dir JobId 3: Start Backup JobId 3, Job=BackupVideo3.2013-02-25_12.47.37_09
25-Feb 12:47 dell-backup-dir JobId 3: Using Device "vantec-drive-0"

25-Feb 12:47 dell-backup-sd JobId 3: Job BackupVideo3.2013-02-25_12.47.37_09 is waiting. Cannot find any appendable volumes.
Please use the "label" command to create a new Volume for:
Storage: "vantec-drive-0" (/var/lib/bacula/gpea-backup/0/drive0)

Pool: File
Media type: File

However, running the vchanger list command shows that vchanger is in fact outputting 3 barcodes:
strophy@dell-backup:/$ sudo vchanger -u bacula -g disk /etc/bacula/gpea-backup.conf list

1:gpea-backup_0001_0001
2:gpea-backup_0001_0002
3:gpea-backup_0001_0003

Some config files:

bacula-dir.conf:
Storage {
Name = gpea-backup
Address = 192.168.85.55
SDPort = 9103
Password = "mH2Ps4Jim2UfNMxko_SQqxqTpuGSjJ7Up"
Device = vantec-nexstar

Media Type = File
Autochanger = yes;
}

bacula-sd.conf
Autochanger {
Name = vantec-nexstar
Device = vantec-drive-0

Changer Command = "/usr/local/bin/vchanger %c %o %S %a %d"
Changer Device = "/etc/bacula/gpea-backup.conf"
}

Device {
Name = vantec-drive-0

Drive Index = 0
Autochanger = yes;
Device Type = File
Media Type = File
Archive Device = /var/lib/bacula/gpea-backup/0/drive0
RemovableMedia = no;
RandomAccess = yes;
}

gpea-backup.conf (the vchanger configuration script):
changer_name = gpea-backup
virtual_drives = 1

slots_per_magazine = 3
magazine_bays = 1
automount_dir = /mnt/vchanger
logfile = /var/lib/bacula/vchanger.log
log_level = LOG_ERR
magazine = "UUID:ff4bd90a-b431-431e-b7d6-a9a323d4f5ee"

magazine = "UUID:aa87944c-3a50-4c1d-a6dd-daca9761603d"

Thanks for helping with this, let me know if more details are required!
Leon

--
Leon White -- Greenpeace East Asia, Beijing

--
Leon White -- Greenpeace East Asia, Beijing

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