Luca Berra <bluca <at> comedia.it> writes: > > On Sun, Nov 14, 2010 at 05:36:38PM +0200, Zoltan Szecsei wrote: > > *If I have to reformat the drives and redo mdadm --create, other than mdadm > > stop, how can I get rid of all the /dev/md* etc etc so that when I restart > > this exercise, the original bad RAID does not interfere with this new > > attempt? > > mdadm -Ss > mdadm --zero-superblock on each partition > > > > > > *Partition alignment? > > Is this relevant for modern HDs (I'm using 5900rpm Seagate 2TB drives) > for modern hdds with 4k sectors it is > new fdisk and/or parted should already know how to align > in any case, since you want to use the whole space for raid, why create > partitions at all, md works nicely without Hello, first thank you for the interesting topic (because it fits my questions ^^) and for all the participation of this community to this topic ! I've read somewhere (sorry I can't remind it) that the raid still could be unaligned by using the whole disk, and so we had to create a partition aligned (by using fdisk -u, then creating a partition beginning at LBA 64 at least, and that would span on a length multiple of 8. Was it totally wrong ? Tanguy -- 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
