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On 06/03/2014 06:50 PM, Steven Haigh wrote:
> On 03/06/14 02:35, Kern Sibbald wrote:
>>> The whole concept of removable media in Bacula makes sense for tapes,
>>> but does not translate well to removable disks. vchanger is a rather
>>> nasty hack - but (kinda) works. It would be much nicer to have bacula
>>> deal with removable disks directly - and not hacked in. In the TSM
>>> world, this was easily done by "vary offline /path/to/volume" and can
>>> easily be scripted. TSM then knows the volume isn't available and
>>> doesn't try to use it. During a restore, it will say "VOLUME <blah>
>>> required".
>> Bacula actually handles removable drives quite well -- many years ago, I
>> programmed it to do my laptop backups while I was on vacation to USB
>> sticks. The problem is that most people don't know how to configure
>> them properly. vchanger or even Bacula's virtual autochanger is
>> overkill for removable media.
>
> Do you have any good links for this? I've only come across vchanger etc
> on my journeys... If there is a better way, I'd love to see it!
It is all documented in the manual, but I don't think that there are any
good examples of how to use things like USB sticks and drives. I
haven't used it for quite a long time now, because I have always had
much better connectivity so found no need to backup my laptop while on
extended vacations (used to be 2 months/year in one shot).
The main trick is to indicate that a file device is removable. In that
case, then if there is a mount command defined, Bacula will attempt to
mount it. If there is no mount command then it will simply assume it is
mounted and scan the device for a volume. If it finds one it will
attempt to use it.
It will probably take a bit of playing with it to make it work. For me,
I found it quite usable as I could
just define a Device that was in fact a USB stick, and I could plug the
stick in before the job, run a job, then if Bacula found a Volume on the
stick it would use it. I wasn't aware of how TSM worked, but what
Bacula can do sounds fairly similar -- it just needs to know that the
Device is "removable".
Sorry, I don't remember more about it, but since most people seem to
thing vchanger is simpler and I was the only one using this removable
feature, I didn't document it.
Best regards,
Kern
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