Thank you all for the feed back. I never knew the FD vs DA partition stuff. I have been using FD with metadata 1.2. Time to fix that. :-) Any chance at a wiki article about this? On Fri, Aug 22, 2014 at 6:18 PM, NeilBrown <neilb@xxxxxxx> wrote: > On Fri, 22 Aug 2014 09:52:11 -0700 Adam Talbot <ajtalbot1@xxxxxxxxx> wrote: > >> I hope this is an easy one. I have two drives I would like to mirror >> as my boot drive. >> 1) Should I mirror the drives, then partition the RAID device (md0)? >> 2) Should I partition the the drives then RAID the partitions? >> >> What is the best practice, and why? > > I always do '1'. I use 1.0 metadata so each drive can be used by itself quite > apart from RAID, or can be part of the array. > Boot sectors etc are mirrored so you don't need to be sure that grub writes > to both devices or whatever. > > However this is "my" practice rather than "best" practice. It is entirely > possible that grub might try to be too clever, see a RAID1 and want to do > something to the underlying drives - and then fail when they look wrong. > > Ultimately this is a question about how your distro is configured and how > your boot loader works much more than it is a question about md/raid. > > Once you choose a distro, you should see what that distro recommends and do > that, because that is the only configuration you can hope to get support for. > > NeilBrown -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
