On Friday February 14, Paul.Clements@SteelEye.com wrote: > Hi, > > I'm just beginning a project to add some new features to the raid1 > driver. The planned features include: > > intent log - a disk-backed bitmap to allow for quick resyncs (Peter T. > Breuer's fr1 code looks very promising) An intent log would be just as useful for raid5 as for raid1, so I think it should be largely supported by md.c rather than specific to raid1.c > > asynchronous replication - to get acceptable performance when the backup > leg of the raid1 mirror is slow (e.g., nbd over a LAN or WAN) > Hmmm. I cannot figure out exactly what would be asynchronous... Nor can I see how this would require an ioctl. In general, ioctl's are seen a evils to be avoided, not added, so I am not in favour of the patch you suggest. Maybe if you explain more about what would be the specifics of these ioctls that you want to pass down. NeilBrown - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
