----- "Michael Monnerie" <michael.monnerie@xxxxxxxxxxxxxxxxxxx> wrote: > On Dienstag, 31. August 2010 Eric Sandeen wrote: > > If you do it right (and especially vs. if you do it wrong) it > > should be a bit faster if all IOs are 4k aligned on the disk. > > And that's what's interesting me: why? Won't XFS do all I/Os at > minimum > for a given block size? Or is it possible XFS does write only a single > sector? I'd expect the smallest I/O size to be the block size, but it > seems I'm wrong? Log I/O and direct writes are sector sized & aligned. > I guess there's no way to "convert" an existing XFS with > sectsz=512,bsize=4096 to sectsz=4096,bsize=4096? Maybe that's only a > flag that can be changed? There's no way (other than dump, mkfs & restore), the filesystem is laid out differently (most data structures, like superblocks and other metadata become 4K aligned). cheers. -- Nathan _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
