On Dec 27, 2007 5:47 AM, David Legg <[EMAIL PROTECTED]> wrote: > Hi Sebastian, > > > The files are rsynced from distant sites to a central backup, and > > bacula is installed as a client on this central backup (so we can get > > the full/inc/diff backups on LAN). The combined daily upload (from > > rsync stats) is way below 50Gb. > > I think the problem is Bacula is only designed to either backup a whole > file or not. It cannot backup just the bits of a file that have changed > between backups. rsync is useful for copying a file efficiently over > the network to a central location as you have done but if just one byte > of the copied file is different Bacula will backup the entire file > (based on its modified date). > > Is it possible that, of these 400,000 files being saved, many are > actually small changes to existing files? > > I asked a similar question a few weeks ago; as have several others. I > believe the facility to do partial file backup is on a 'wish list' > somewhere. > > Regards, > - David Legg > >
It will backup the whole file as that's what most backup programs will do once it found a file to be changed. Even if you don't think the file contents or data within has changed, check the access time as well on the file. If the access time and not only modified time has changed, bacula will indicate that as a change and back the file up to my knowledge. So it might not seem reasonable that your incrementals are huge but if you have a ton of users hitting these files, opening them to read them, etc, then that's most likely the cause of your larger incremental backups. -drew ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
