Personally I do not use such a setup, but (untested) would something
like this work?


In amanda.conf, backup to a vtape:

 tapedev "file:/space/vtape"
 tapetype DVD47G

 define tapetype DVD47G {
     length 4482 MB
     filemark 4KB
 }

Two possibilities here:

Possibility 1: backup to a DVD[+-]R or DVD[+-]RW
  This needs to be written to with cdrecord, so we make a backup
  to a staging area on disk:

  Create the vtape on disk:

  # mkdir -p /space/vtape/data
  # chown -R amanda /space/vtape

  Label the vtape, just as any normal tape:

  $ amlabel daily Daily-01

  And run, as usual, amdump (manually of from crontab).
  $ amdump daily

  And then burn the contents of the data directory to the DVD[-+]RW?
  with cdrecord:
  $ cd /space/vtape/data
  $ mkisofs ...options... | cdrecord ...options...

Possibility 2: backup to a DVD-RAM
  Mount the DVD-RAM with udf, so you can write to it like a real disk
  (I'm not sure if the vtape-length is still 4482 MB in this case??)
  Make sure user amanda has permission to write to the disk:

  # mount -t udf -o uid=amanda /dev/yourdvd /media/dvdram
       (or prepare /etc/fstab to allow amanda doing this tooà
  # and create the vtape with data a symlink to the mounted device:

  # mkdir /space/vtape
  # chown amanda /space/vtape
  # su - amanda
  $ ln -s /media/dvdram /space/vtape/data
  $ amdump daily

  and unmount the dvdram when finished.

See the most recent information about the file driver in:

http://wiki.zmanda.com/index.php/File_driver

Has anybody tried such a scheme already?  Feedback welcome!!

--
Paul Bijnens, Xplanation                            Tel  +32 16 397.511
Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM    Fax  +32 16 397.512
http://www.xplanation.com/          email:  Paul.Bijnens AT xplanation DOT com
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