Re: [Bacula-devel] Device is busy writing on another Volume. - New autochanger conf

[Peter S. <pet...@te...>]

On Mon, 2005-05-09 at 11:41 +0200, Kern Sibbald wrote:

<SNIP>

> >
> > > The autoloader part of bacula-sd.conf contains
> > > Device {
> > >   Name = TL0                    # TapeLoader - drive 0
> > >   Media Type = DLT35            #
> > >   Drive Index = 0
> > >   Archive Device = /dev/tape2   # Normal archive device
> > >   Changer Device = /dev/changer # Generic SCSI device name
> > >   AutomaticMount = yes;         # when device opened, read it
> > >   Changer Command = "/opt/bacula/mtx-changer-ps.sh %c %o %S %a %d %j"
> > >   Autochanger = yes
> > >   AlwaysOpen = yes;
> > >   RemovableMedia = yes;
> > >   RandomAccess = no;
> > >   LabelMedia = yes;
> > >   Maximum Spool Size = 7G
> > >   Maximum Job Spool Size = 7G
> > >   Spool Directory = /spare/bacula/spool
> > > }
> > >
> > > Device {
> > >   Name = TL1                    # TapeLoader - drive 0
> > >   Media Type = DLT35            #
> > >   Drive Index = 1
> > >   Archive Device = /dev/tape3   # Normal archive device
> > >   Changer Device = /dev/changer # Generic SCSI device name
> > >   AutomaticMount = yes;               # when device opened, read it
> > >   Changer Command = "/opt/bacula/mtx-changer-ps.sh %c %o %S %a %d"
> > >   Autochanger = yes
> > >   AlwaysOpen = yes;
> > >   RemovableMedia = yes;
> > >   RandomAccess = no;
> > >   LabelMedia = yes;
> > >   Maximum Spool Size = 7G
> > >   Maximum Job Spool Size = 7G
> > >   Spool Directory = /spare/bacula/spool
> > > }
> 
> I would recommend that you modify your SD conf file as follows:
> - Remove the Changer Device and Changer Commands from both the Device 
> resources. This is not required, but recommended.
> - Create the following new resource in your bacula-sd.conf file:
> 
> Autochanger {
>   Name = "DLT-changer"   # any name you want
>   Changer Device = /dev/changer # Generic SCSI device name
>   Changer Command = "/opt/bacula/mtx-changer-ps.sh %c %o %S %a %d"
>   Device = TL0, TL1
> }
> 
> Then modify your bacula-dir.conf file so that instead of referencing TL0 or 
> TL1 in your Storage resource on the Device directive, you reference
> DLT-changer -- that is, use:
> 
> Storage {
>   Name = ...
>   Device = "DLT-changer"
>   ...
> }
One of the new things related to autochanger, one I'm waiting for, good.
I just had to try it directly but bumped into problem, it doesn't work.

I think I did what you wrote (didn't find it in the manual, guess it's
not there yet) but when I tried "update slot=TL892" it complained that
it's not an autochanger device.

root@riker:/opt/bacula # echo update slots storage=TL892|./bconsole
Connecting to Director riker:9101
1000 OK: riker-dir Version: 1.37.18 (09 May 2005)
Enter a period to cancel a command.
update slots storage=TL892
Using default Catalog name=MyCatalog DB=bacula
Connecting to Storage daemon TL892 at riker.intra.techwiz.ca:9103 ...
3993 Not a autochanger device.
Device "TL892" has 0 slots.


I added "Autochanger = Yes;" in the Autochanger resource but that was not permitted.


>From bacula-sd.conf

Autochanger {
  Name = "TL892"
  Changer Device = /dev/changer # Generic SCSI device name
  Changer Command = "/opt/bacula/mtx-changer-ps.sh %c %o %S %a %d"
  Device = TL0, TL1
  }

Device {
  Name = TL0                    # TapeLoader - drive 0
  Media Type = DLT35            #
  Drive Index = 0
  Archive Device = /dev/tape2   # Normal archive device
  AutomaticMount = yes;         # when device opened, read it
  Autochanger = yes
  AlwaysOpen = yes;
  RemovableMedia = yes;
  RandomAccess = no;
  LabelMedia = yes;
  Maximum Spool Size = 7G
  Maximum Job Spool Size = 7G
  Spool Directory = /spare/bacula/spool
}

Device {
  Name = TL1                    # TapeLoader - drive 0
  Media Type = DLT35            #
  Drive Index = 1
  Archive Device = /dev/tape3   # Normal archive device
  AutomaticMount = yes;               # when device opened, read it
  Autochanger = yes
  AlwaysOpen = yes;
  RemovableMedia = yes;
  RandomAccess = no;
  LabelMedia = yes;
  Maximum Spool Size = 7G
  Maximum Job Spool Size = 7G
  Spool Directory = /spare/bacula/spool
}


>From bacula-dir.conf

Storage {
  Name = TL892
  Device = TL892
  Address = riker.intra.techwiz.ca      # N.B. Use a fully qualified name here
  SDPort = 9103
  Password = "obscured"
  Media Type = DLT35
  Autochanger = yes
  Maximum Concurrent Jobs = 4
}



> 
> The above change will possibly not solve your problem, but it should allow you 
> to use both drives without worrying about which one, and it will 
> automatically ensure that you mtx-changer-ps script is locked.  If you are 
> explicitly locking in the mtx-changer-ps, you can remove it, since Bacula 
> will do this for you -- at least that is the theory ...  I don't have a two 
> drive autochanger yet, and to the best of my knowledge no one has tested 
> this.
I don't mind testing it. I have two tapedrives in my tapelibrary but I
only use one for now. My changer script is mostly modified to not just
"sleep xx" but poll for status and give some debug logs. No interlocking
here.

> 
> 
> >
> > Complete config files and more can be found at
> > http://www.techwiz.ca/~peters/bacula/
> 
> Thanks for the above. I see better what is going on with your bacula-dir.conf.
> 
> Could you please do a "list volumes" in the console and either put it on your 
> web site or send it in an email?
"list volumes" is now added to my "ShowConfig.sh" script
I also have http://portal.techwiz.ca/bacula-web/

> 
> I still would prefer this to be resolved via a bug report.
> 
Before submitting a bug report I like to confirm that it's not a config
error and also be able to make a clear and concise description of the
problem. 
I did see that you now fixed it so Unless you ask for it I won't make a
bug report (unless it still is a problem).