On Tue, Mar 07, 2006 at 10:21:15AM -0600, Carl Wilhelm Soderstrom wrote: > ok. point taken. > Bonnie does create a very shallow tree for these files, but it's only a > directory or two deep.
The depth isn't really the issue. It is that they are created under one tree, and hardlinked to another tree. The normal FS optimization of putting the inodes of files in a given directory near each other breaks down, and the directories in the pool end up with files of very diverse inodes. Just running a 'du' on my pool takes several seconds for each leaf directory, very heavily thrashing the drive. If you copy a backup pool, either with 'cp -a' or tar (something that will preserve the hardlinks), the result will either be the same, or the pool will be more efficient and the pc trees will be very inefficient. It all depends on which tree the backup copies first. I still say it is going to be a lot easier to change how backuppc works than it is going to be to find a filesystem that will deal with this very unusual use case well. Dave ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ BackupPC-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/backuppc-users http://backuppc.sourceforge.net/
