Re: [Bacula-users] When does bacula use multiple tape drives

[Randall S. <rsv...@gm...>]

Hi,

Looks like I can use both drives when I add

  Changer Device = /dev/changer-sg2

to the bacuala-sd.conf file

and additionally I had to add to the Storage directive

  Device = Qualstar


# Definition of LTO tape storage device
Storage {
  Name =  "Qualstar"
  #Do not use "localhost" here
  Address = localhost                # N.B. Use a fully qualified name here
  SDPort = 9103
  Password = "haaaaahahahahahahahaahah"          # password for Storage
daemon
  #Device = Drive-1                   # must be same as Device in Storage
daemon
  #Device = Drive-2
  Device = Qualstar
  Media Type = LTO6                  # must be same as MediaType in Storage
daemon
  Autochanger = yes                   # enable for autochanger device
  Maximum Concurrent Jobs = 2
}


In the bacula-dir.conf.  Apparently you have to reference the changer, not
the actual tape devices like this example below.

  Device = Drive-1                   # must be same as Device in Storage
daemon
  Device = Drive-2


In terms of running multiple jobs, and writing to the same tape...this
sounds like a pretty cool idea that Bacula can interleave the jobs.  How
long has it been able to do this.  When I first used this software many
years ago, it did not seem like this was available or maybe it was not
advocated for reasons mentioned before.





On Mon, Mar 31, 2014 at 8:58 AM, Wolfgang Denk <wd...@de...> wrote:

> Dear John,
>
> In message <
> CAE...@ma...> you
> wrote:
> >
> > > bacula seems to only use one drive.  What determines in bacula when it
> is
> > > optimal to use two drives?  I am using bacula Version: 5.2.13.
>  Additionally
> > > I have set "Maximum Concurrent Jobs = 4" in all the relevant places,
> but all
> > > this seems to do is allow multiple concurrent jobs run, which I have
> tested
> > > and seems to work, but strangely, I was under the impression that one
> job
> > > could write to one tape exclusively.  But in this case, it seems
> multiple
> > > jobs can write to the same tape concurrently or is this not correct?
>  Lastly
> > > I have specified spool directory, however it is never used.  Any ideas
> here
> > > would be appreciated or clarity.
> >
> > Bacula can write to more than 1 drive at a time. However I believe by
> > default bacula can not load the same pool into more than 1 drive at a
> > time.
>
> Yes, it can.
>
> Best regards,
>
> Wolfgang Denk
>
> --
> DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd...@de...
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>



-- 
Randall Svancara