On Mon, Feb 28, 2011 at 03:19:21PM -0500, Martin K. Petersen wrote: > Kind of, yes. But that involves teaching every ATA driver in $LEGACY_OS > about 4KB logical blocks. There is little value is switching to 4KB > logical blocks in the first place. So the claim is that it is easier to > stick with 512-byte addressing, leave the I/O stack intact, and require > the filesystem to always issue aligned units of 4KB. > > That saves the drive vendors from implementing RMW logic and puts the > burden on us. Perfect deal. So it there a reliable way to detect that disk drives that don't have the Read-Modify-Write logic? If that can be reflected up the I/O layer I can have mke2fs enforce that restriction, which currently we only enforce if the logical blocksize is 4k. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
