Le mercredi 08 janvier 2025 à 14:46 -0600, Rob Gerber a écrit : > Christophe,
Hi Rob, > I saw your correction email saying you actually do the diff on 2nd > and 5th sunday. Not 2nd AND 5th, but 2nd TO 5th. > I do not think you will lose files with this first idea. Maybe you > could have problems if you have two full backups run in a single > month, Yes, that's one of the problems. > but this would require a schedule error to occur, I think. I assume > you have only 1 FD. No, but the example was for one FD. I have the same config for each. I have 6 FD. > MaximumVolumes="2" can only work if you have only 1 FD. Really, for > this to work the right way you must have MaximumVolumes=X where X = > (total FD x 2). And save all FD in the same pool ? It seems to me that this will not gain me any space. > > This idea below cannot work, and is dangerous. Think about it - if > you can only have 1 full volume, you must delete your old full before > you can make a new full. This is dangerous because you would have to > delete your backup before you can make a new backup. That's what worried me. > > Think of bacula volumes as tapes. Bacula started as a tape backup > program. > > > Bacula *is* able to add data to volumes, as I am sure you know. > Bacula cannot remove or edit data on a volume. The only way to remove > data is to remove the volume. Ah ! It actually changes the whole thinking. > I think this is because of the way tapes worked. > Because you want to save hard drive space, it is good to keep only a > certain number of jobs on each volume. This means you can recycle > volumes sooner. So, with Maximum Volume Jobs = 0, the volume size will continue to grow? So I have to find something else... I thought I had made my life easier like that. > > Have you considered compression to help use less space? No. This is indeed a very good idea that I will try, but even so, it will not completely solve my problem. I need to find the best strategy. > You specify compression in the fileset, in options. Compression > tasks are done on the FD. Bacula supports GZIP, LZO, and ZSTD (ZSTD > might be only available in newer bacula versions like 15.0.2). For my > case I found that ZSTD gave the best mix of speed and compression. I have bacula 15.0.2. What linux tool does this ZSTD compression format depend on? > I hope this helps. A lot. > Please tell me if you could not understand something. I think I understood everything, and thank you for the clarity of the explanations. -- Christophe PEREZ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
