On Tue, Jan 15, 2013 at 06:33:54PM -0500, Bradley C. Kuszmaul wrote: > So my understanding is that the first time I do a read() I'll have to read > the extents. My writes are on the order of a megabyte, a 250MB file will > likely require an extra I/O to open. That's fine. write size != extent size. Extents on XFS on a 4k block size filesystem can be up to 8GB in size. It's entirely likely that your 250MB file is a single extent an dhence has no extra overhead on read. Use xfs_bmap to check. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
