On Thursday 25 May 2006 21:13, Arno Lehmann wrote: > It doesn't. At least, not by using the directives meant for DVD writing. > There was some detailed mail exchange in bacula-users some time ago > analyzing and finally explaining how to use (multiple) external hard > disks as storage device. DVD writing is completely different and > requires some external script to actually transfer data from Bacula to > disk. The former is what you should try to find in the archive - search > for mail from Barry L Bond - the latter would require you to modify the > dvd-handler.pl script to write to a hard disk, not a DVD.
I suppose you are referring to [1] http://article.gmane.org/gmane.comp.sysutils.backup.bacula.general/22626 and [2] http://article.gmane.org/gmane.comp.sysutils.backup.bacula.general/22598 While these approaches are nice, there are two serious problems which render them useless in many environments: [1] requires the disk to be unmounted manually. In many cases, there is no qualified personnel available to unmount the backup disk before actually unplugging the disk. Usually, this would not destroy any data on the disk but this is no clean solution for unattended operation. [2] shows nice disk handling, but it still requires a temporary spool directory where Bacula stores the backup data before actually writing it to the disk. Considering the amount of wasted space, this is ridiculous. I don't understand while Bacula treats all removable non-tape media as DVDs, which requires spooled write access. If only the storage director would support the options "Mount Command" and "Unmount Command" without the "Write Part" command (... and underlying logic), most problems related to backing up to removable disks would be solved. However, I faced almost the same problem about two years ago and I had to abandon Bacula back then because backing up to removable disks was more or less impossible. Bacula has made huge improvements since then and I hope it doesn't take two more years to fill in the remaining holes in the implementation ;-) Best regards, Henning Holtschneider -- LocaNet oHG - http://www.loca.net Lindemannstrasse 81, D-44137 Dortmund tel +49 231 91596-25, fax +49 231 91596-55 sip [EMAIL PROTECTED]
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