Just to add another voice to the cachophony, I would like to be able to select the amount. At any time, not just at mkfs time. For example, ext2's reserved blocks are set by default to 5%, but I can use tune2fs to change that to 33% or 0% or whatever makes me happy.
The point is that sometimes I care more about performance than space usage (hard disks are cheap, blah blah) and sometimes I wish to use 100% of my disk, even knowing that it means high fragmentation. As far as repacking goes, I believe xfs_fsr refuses to defrag files if too little space is free. If it's too hard to program a repacker to operate efficiently with only a few megabytes free, simply program it to exit with error when less than 5% disk is free. -- Matt Stegman On Fri, 2 Sep 2005, Hans Reiser wrote: > It could probably be a lot less than 5%, 2% is more than enough I would > guess, but we also need to reserve space to get good performance. > >
