> On Mar 9, 2016, at 6:52 PM, Heitor Faria <heitor AT bacula.com DOT br> wrote:
>
> I have a copy to tape job which copies from disk to tape using Bacula 7.4.0
> and PostgreSQL 9.4 on FreeBSD 10.2
>
> Everything is within one SD
>
> Full details at https://gist.github.com/dlangille/2341a6da8f9ee836270c
>
> The job summary:
>
> Start time: 09-Mar-2016 19:41:54
> End time: 09-Mar-2016 20:51:02
> Elapsed time: 1 hour 9 mins 8 secs
> Priority: 410
> SD Files Written: 1
> SD Bytes Written: 52,897,660,928 (52.89 GB)
> Rate: 12752.6 KB/s
>
> If I tar the volumes directly to tape, it takes only 16 minutes.
>
>
> $ time sudo tar -cf /dev/nsa1 IncrAuto-4525 IncrAuto-4320 IncrAuto-4324
> IncrAuto-4321 \
> > IncrAuto-4055 IncrAuto-4322 IncrAuto-4319 IncrAuto-3969 IncrAuto-3972 \
> > IncrAuto-3973 IncrAuto-3971 IncrAuto-4058
>
> real 15m47.508s
> user 0m5.844s
> sys 1m51.834s
>
> Spooling attributes is trivial:
>
> 09-Mar 20:51 crey-sd JobId 232945: Sending spooled attrs to the Director.
> Despooling 321 bytes ...
> 09-Mar 20:51 bacula-dir JobId 232944: Bacula bacula-dir 7.4.0 (16Jan16):
>
> I am not sure where to look to figure this out.
> Hello, Dan: maybe there is nothing to figure it out. Packing volumes with tar
> directly to tapes makes you unable to restore a single file or even a single
> job (with bootstrap) from an entire tape. I think it's a trade-off.
I have no desire to use tar.
I have a desire to effectively use an LTO tape drive.
--
Dan Langille - BSDCan / PGCon
dan AT langille DOT org
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