On Thu, Aug 13, 2009 at 04:07:32PM +0200, Markus Trippelsdorf wrote: > I was playing with the new hdparm wiper script ( > http://sourceforge.net/projects/hdparm/files/) on my Vertex SSD and > it appears that btrfs needs a huge space overhead when dealing with > fallocate system calls. Basically what the wiper script does is to > fallocate one huge file using all free space minus a safety margin. > And this margin has to be about 30% on btrfs, e.g.: We're actively fixing this ;) The margin is just a hard coded limit to try and avoid enospc oopsen. It should improve in 2.6.32. -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
