On Tuesday 06 June 2006 10:32, Baptiste Malguy wrote: > Christoph Litauer wrote: > > Baptiste Malguy schrieb: > >> Hello, > > [...] > > >> Here are my questions: > >> > >> 1 - Is it just the OS that takes so long to set its index to the content > >> of the disk volume (file) or is it Bacula that treats a disk volume as a > >> cartridge, with sequential access instead of random access ? > > > > It is bacula (at the moment). As you can read in the release notes, > > random access to disk media is disabled due to some error. So bacula has > > to read all the backup devices sequential. > > > > See http://www.bacula.org/?page=news > > "- Disk seeking during restores does not yet work correctly in > > all cases, so it is turned off." > > Missed that. Thanks for the pointer. > > >> 2 - Based on the fact Bacula does not use random access to disk volumes, > >> what's the best deal between spooling data to avoid interleaved backups > >> data and havin interleaved backups data on disk volumes ? > > > > I used disk devices AND spooling for a long time now (until my disk > > became too small). Works as you want to. > > If you have the money, a spool disk space, and a bacula volume disk space > > >> 3 - By the way, what do you think of havin a single ~ 60GB disk volume > >> or several smaller 5-10GB volumes ? Does anyone has some background > >> about it ? > > > > There is no preference -- if bacula would use random access on disk > > devices. But as all backup volumes are read sequentially each volume > > should be "small". I used 2GB. > > Right ! The drawback is when you use several storage devices (for example > several disk spaces/partitions/directories).
If you take a look in the manual, it explains how to use multiple partitions and multiple directories using linking so that Bacula will function correctly with them. There is no need for different Storage devices. Bacula has no problem restoring from different Volumes (even if they are linked to different directories) providing they are all written by the same Device. > > See http://www.bacula.org/rel-manual/Current_State_Bacula.html > > "Bacula cannot automatically restore files for a single Job from two or > more different storage devices or different media types. That is, if you > use more than one storage device or media type to backup a single job, the > restore process will require some manual intervention." > > Thank you for your answers. -- Best regards, Kern ("> /\ V_V _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
