On Wed, Jul 20, 2011 at 04:04:31PM +0200, Michael Monnerie wrote: > On Mittwoch, 20. Juli 2011 Stan Hoeppner wrote: > > I thought this was packing multiple small files into > > a single stripe write, which you just explained XFS does not do. > > This is interesting, I jump in here. Does that mean that if I have a XFS > volume with sw=14,su=64k (14*64=896KiB) that when I write 10 small files > in the same dir with 2KB each, each file would be placed at a 896KiB > boundary? No, they'll get sunit aligned but default, which would be on 64k boundaries. > That way, all stripes of a 1GB partition would be full when > there are roughly 1170 files (1170*896KiB ~ 1GB). What would happen when > I create other files - is XFS "full" then, or would it start using sub- > stripes? If sub-stripes, would they start at su (=64KiB) distances, or > at single block (e.g. 4KiB) distances? It starts packing files tightly into remaining free space when no free aligned extents are availble for allocation in the AG. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
