On Tue, Jun 07, 2011 at 03:09:09PM +0100, Peter Grandi wrote: > Personally I'd rather have a file system design with space > reservations (on detecting an append-like access pattern) and > truncate-on-close than delayed allocation like XFS; Welcome to the 1990s, Peter. XFS has been doing this for 15 years. It is an optimisation used by the delayed allocation mechanism, not a replacement for it. You might have heard the term "speculative preallocation" before - this is what it does. FYI, ext3 has a space reservation infrastructure to try to ensure contiguous allocation occurs without using delayed allocation. It doesn't work nearly as well as delayed allocation in ext4, btrfs or XFS... Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
