Re: [Bacula-users] Labeling when using native virtual autochanger

[Dan L. <da...@la...>]

> On Sep 3, 2015, at 12:26 AM, Ana Emília M. Arruda <emi...@gm... <mailto:emi...@gm...>> wrote:
> 
> Hello Dan,
> 
> On Wed, Sep 2, 2015 at 11:06 PM, Dan Langille <da...@la... <mailto:da...@la...>> wrote:
> 
>> On Aug 25, 2015, at 6:55 PM, Ana Emília M. Arruda <emi...@gm... <mailto:emi...@gm...>> wrote:
>> 
>> Hello Dan,
>> 
>> Heitor is right :)
> 
> Thank you.
> 
> Ana: what are you using to quickly test these configurations?  I suspect a VM or similar.
> 
> ​You're welcome. Yes, I have VMs for testing purposes :).​ 
> 
>> 
>> I run tests with exactly your configuration and had the same issue. The drive index 0 must exist and belongs to the autochanger resource. You have an Index 0 drive in your configuration: vRestore. But it is not in the Autochanger definition. If you put it there, it will work:
>> 
>> Autochanger {
>>   Name = VirtualDisk
>> 
>>   Changer Device  = /dev/null
>>   Changer Command = /dev/null
>> 
>>   Device          = vRestore, vDrive-1, vDrive-2, vDrive-3, vDrive-4, vDrive-5
>> }
>> 
>> I tried defining the vRestore drive with "autoselect = no" (this work for physical autochangers). But it seems to make no sense when dealing with virtual disk autochangers.
> 
> Do we need vRestore in there?  Instead, I renumbered my Drive Index fields from zero.
> 
> ​No, I just added it to the device list because vRestore was configured as an autochanger drive with index 0. I think your solution is better, since we cannot select a specific drive for restores in the case of virtual autochangers.
>  
> 
> Autochanger {
>   Name = VirtualDisk
> 
>   Changer Device  = /dev/null
>   Changer Command = /dev/null
> 
>   Device          = vDrive-1, vDrive-2, vDrive-3, vDrive-4, vDrive-5
> }


FYI, I made a change.  I now use vDrive-0 .. vDrive-4

I renamed the devices to match the drive indexes. There is no technical reason for this.  I did it because I like the matching numbers.

> 
> Device {
>   Name           = vDrive-1
>   Media Type     = File
>   Archive Device = /usr/local/bacula/volumes
>   LabelMedia     = yes
>   Random Access  = yes
>   AutomaticMount = yes
>   RemovableMedia = no
>   AlwaysOpen     = no
> 
>   Autochanger    = yes
>   Drive Index    = 0
> 
>   Maximum Concurrent Jobs = 1
>   Volume Poll Interval    = 15
> }
> 
> Device {
>   Name           = vDrive-2
> ...same as above
>   Autochanger    = yes
>   Drive Index    = 1
> 
>   Maximum Concurrent Jobs = 1
>   Volume Poll Interval    = 15
> }
> 
> Device {
>   Name           = vDrive-3
> ...same as above
>   Autochanger    = yes
>   Drive Index    = 2
> 
>   Maximum Concurrent Jobs = 1
>   Volume Poll Interval    = 15
> }
> 
> Device {
>   Name           = vDrive-4
> ...same as above
>   Autochanger    = yes
>   Drive Index    = 3
> 
>   Maximum Concurrent Jobs = 1
>   Volume Poll Interval    = 15
> }
> 
> Device {
>   Name           = vDrive-5
> ...same as above
>   Autochanger    = yes
>   Drive Index    = 4
> 
>   Maximum Concurrent Jobs = 25
>   Volume Poll Interval    = 15
> }
> 
> 
>> 
>> Having a single drive for restores worked for me. I was able to restore files from jobs/volumes that used the autochanger for backup.
>>  
>> ​​Device {
>>   Name           = Restore​-Drive​
>>   Media Type     = File
>>   Archive Device = /usr/local/bacula/volumes
>>   LabelMedia     = yes
>>   Random Access  = yes
>>   AutomaticMount = yes
>>   RemovableMedia = yes
>>   AlwaysOpen     = yes​​
>> }
> 
> I have this in my bacula-sd.conf:
> 
> Device {
>   Name           = Restore-Drive
>   Media Type     = File
>   Archive Device = /usr/local/bacula/volumes
>   LabelMedia     = yes
>   Random Access  = yes
>   AutomaticMount = yes
>   RemovableMedia = no
>   AlwaysOpen     = no
> 
>   Maximum Concurrent Jobs = 1
>   Volume Poll Interval    = 15
> }
> 
> When I run a restore job, it selects vDrive-1 automatically.
> 
> ​Yes, if you select the virtual autochanger storage for restore, the drive index 0 will be selected for the restore.​
>  
> 
> How did you get the restore to use Restore-Drive?
> 
> I configured the Restore-Drive as a storage in bacula-dir.conf (both Restore-Drive and VirtualDisk drives configured with the same archive device). This way we can choose the Restore-Drive for restoring files that are in volumes in the same mount point as the virtual autochanger.
> 

That is what I suspected, but I wanted to make sure I did not misunderstand.  I've done the same and can restore from the Restore-Drive.