On 4/28/2010 6:43 PM, Greg Golin wrote:
> Hello,
>
> I am trying to configure bacula to use vchanger for offsite backups. 
> Basically I'd like to be able to swap USB drives every week and take 
> them offsite. The vchanger howto does not state whether I should run 
> *label barcodes *for each magazine. Could someone please clarify what 
> operations should be performed to configure two drives?

It is treated in the same way as a tape magazine in that respect. Each 
magazine (USB drive) has its own unique set of volumes. Therefore you 
must first label the volumes in each magazine using label barcodes, else 
there won't be any usable volumes in the slots, just "blank tapes".

Once both drives have had their volumes labeled, whenever you swap 
drives you will have to issue an update slots command in bconsole to 
inform Bacula of which volume is currently "inserted" into each slot.

Also note that when swapping drives it is best to manually update the 
status of the last volume written to in each pool from Append to Used. 
Otherwise, Bacula will try to select that volume when the next job runs 
after the drives have been swapped. That is not a bug, it is by design. 
I believe it eventually times out and then selects another volume, but I 
have found it makes more sense to mark those volumes Used anyway, 
particularly if you use VirtualFull or Migrate jobs.

>
> bacula-dir.conf relevant config:
> Storage {
>   Name = OffSiteChanger
>   Address = mfile.merus.local-sd
>   Password = "snip"
>   Device = OffSiteChanger
>   Media Type = File
>   Autochanger = yes;
> }
>
> bacula-sd.conf relevant config:
>
> Autochanger {
>   Name = OffSiteChanger
>   Device = OffSiteChanger-drive-0
>   Device = OffSiteChanger-drive-1
>   Changer Command = "/usr/local/bin/vchanger %c %o %S %a %d"
>   Changer Device = "/etc/bacula/removable.conf"
> }
> #---  drive 0 of the OffSiteChanger autochanger
> Device {
>   Name = OffSiteChanger-drive-0
>   DriveIndex = 0
>   Autochanger = yes;
>   DeviceType = File
>   MediaType = File
>   ArchiveDevice = /var/lib/bacula/OffSiteChanger/0/drive0
>   RemovableMedia = no;
>   RandomAccess = yes;
> }
> #---  drive 1 of the OffSiteChanger autochanger
> Device {
>   Name = OffSiteChanger-drive-1
>   DriveIndex = 1
>   Autochanger = yes;
>   DeviceType = File
>   MediaType = File
>   ArchiveDevice = /var/lib/bacula/OffSiteChanger/1/drive1
>   RemovableMedia = no;
>   RandomAccess = yes;
> }# ...
>
> vchanger config:
>
> changer_name = "OffSiteChanger"
> work_dir = "/var/lib/bacula/OffSiteChanger"
> logfile = "/var/lib/bacula/OffSiteChanger/OffSiteChanger.log"
> Virtual_Drives = 1
> slots_per_magazine = 4
> magazine_bays = 1
> automount_dir = /opt/bacula/removable
> magazine = "UUID:1125820e-3163-41d0-b571-36818eea5a78"
> magazine = "UUID:8a672f1d-9f79-4b68-8260-8285eeb6a1d8"
>
> With this configuration when I unplug one drive, plug in the second 
> drive, and run *update slots *bacula says this:
>
> *update slots
> Automatically selected Catalog: MyCatalog
> Using Catalog "MyCatalog"
> The defined Storage resources are:
>      1: File
>      2: Archive
>      3: OffSiteChanger
> Select Storage resource (1-3): 3
> Enter autochanger drive[0]: 1
> Connecting to Storage daemon OffSiteChanger at 
> mfile.merus.local-sd:9103 ...
> 3306 Issuing autochanger "slots" command.
> Device "OffSiteChanger" has 4 slots.
> Connecting to Storage daemon OffSiteChanger at 
> mfile.merus.local-sd:9103 ...
> 3306 Issuing autochanger "list" command.
> Volume "OffSiteChanger_0002_0001" not found in catalog. Slot=1 
> InChanger set to zero.
> Volume "OffSiteChanger_0002_0002" not found in catalog. Slot=2 
> InChanger set to zero.
> Volume "OffSiteChanger_0002_0003" not found in catalog. Slot=3 
> InChanger set to zero.
> Volume "OffSiteChanger_0002_0004" not found in catalog. Slot=4 
> InChanger set to zero.
> *
>
> I expected it to link the volumes to the new slots. What am I doing wrong?
>
> Thanks,
> Greg
>
>
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