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). 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. -- Baptiste MALGUY - IT Engineer SOLSOFT PGP Fingerprint: 2A90 B6D1 855F 1584 FE68 94AC CCD6 36D0 3DC7 DCB8 www.solsoft.com - phone: +33 1 47 15 04 00 - fax: +33 1 47 15 55 09 How secure networks are managed. _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
