How about labeling all the tapes beforehand, before starting the job?
Maybe you could then remove the first two tapes when they are full, while
Bacula is writing the 3rd one, and put the new previously labeled tapes in.
Maybe you could then also issue "update slots" command, and there would be
no need to pause the job at all?
I don't know if this works, but I think it could be possible. "Update slots"
does not need the drive itself but just scans the barcodes. Depending on the
changer device you could be able to manipulate the contents of the tape
library while the drive is working. And I believe Bacula also allows you to
do this.
If you cannot do it this way, at least it should be possible to change the
prelabeled tapes when Bacula stops and asks new tapes when the tapes are in
the catalog but not in the changer yet. So I think labeling the tapes in
advance might be the solution here.
--
TiN
"Mike Hanby" <mhanby AT uab DOT edu> kirjoitti viestissä
news:A72C1C64C331B445A593C79DA1BE580C265848B94D AT UABEXMBS3.ad.uab DOT edu...
> Thanks John,
>
> I hate when I think of all the details to provide in the email but forget
> to type them out.
>
> Yes, it's a Dell PV-124T changer with a single LTO4 drive (also single
> magazine, which with a 2nd mag, this wouldn't be an issue).
>
> I tried the auto-label during some testing and the I couldn't get to
> produce the same label format that manually labeling produces via "label
> barcodes".
>
> Mike
>
> -----Original Message-----
> From: John Drescher [mailto:drescherjm AT gmail DOT com]
> Sent: Friday, August 20, 2010 3:05 PM
> To: Mike Hanby
> Cc: bacula-users
> Subject: Re: [Bacula-users] Swapping tapes mid job with an autochanger
>
>> If I have a multi LTO4 tape backup running that will require swapping
>> tapes (i.e. it will use all of the tapes in the autochanger and require a
>> few more), is there any way during the job for the operator to tell
>> Bacula to pause once it finishes filling the current tape?
>>
>> The idea, I know I'm going to need to swap out / in two more tapes AND I
>> know that the existing tapes won't fill up until 3 AM, why not let it
>> finish writing the first 2 tapes, pause it, swap the first 2 tapes with
>> new tapes, label them, mount the 3rd tape and let the job resume. The
>> alternative, the backup will be idle from 3 AM until the next work day
>> waiting for the operator to perform the swap.
>>
>
> I assume you have only 1 LTO4 drive otherwise this would not be a
> problem. I swap magazines all the time with jobs running on 1 drive
> and use label barcodes on the open drive.
>
> No you can not pause the backup and I do not think you can run label
> barcodes when bacula is asking for a tape. There is a way to label new
> tapes automatically without running label barcodes. I have never used
> that however.
>
> John
>
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