On Thursday 11 March 2010 19:58:11 Theodore Tso wrote: > On Mar 11, 2010, at 8:57 AM, Nikanth Karthikesan wrote: > > I guess, what he meant was, to keep filesystem blocks aligned, even if > > the partition is not. Say if the partition is mis-aligned by 512-bytes, > > let the filesystem waste 4k-512bytes and keep it's blocks aligned. But it > > might be a case of over-engineering, possibly requiring disk format > > change. > > Ah, yes, I agree with you; that's probably what he meant. > > Sure, that's theoretically possible, but it would mean changing every > single filesystem, and it would require a file system format change --- or > at least a file system format extension. > > It would seem to be way easier to simply fix the partitioning tools to do > the right thing, though. > Yes. May be, just a simple but transparent device-mapper like mapping on top of the mis-aligned partition, to do the alignment. Then the file-system code need not change much. But Linux already has device-mapper and Linux will not be affected with mis- aligned partitions, when we use LVM. But the actual problem here is that partitioning tools might create partitions that wont allow other operating-systems to boot. So it might be enough, if the partitioning tools just create partitions with (mis-)alignment requirement for Windows. Thanks Nikanth -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
