On Thursday October 5, ask@xxxxxxxxxxxxxx wrote: > > On Oct 5, 2006, at 3:15 AM, Jurriaan Kalkman wrote: > > > AFAIK, linux raid-10 is not exactly raid 1+0, it allows you to, for > > example, use 3 disks. > > I made a raid-10 device earlier today with 7 drives and I was > surprised to see that it reported to use all of them. I thought it'd > make one of them a spare (or complain about the odd number of drives). > > How does that work? (Or is it the "number of drives reported" bug > Neil referred to a moment ago? I use FC6's version of 2.6.18). If you wanted 6 drives and a spare you need to ask for in: -n6 -x1. If you asked for 7 drives in a raid10 you get them. The data is laid out thus: A A B B C C D D E E F F G G H H I I J J K K L L M M N N (each column in a drive, each letter is a chunk of data). 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
