Hello everyone. I've really looked around everywhere but it is hard to find any decent information about partitioned software raid 5. If someone could please help me out that would be great. Thanks a lot in advance... I am trying to partition a raid 5 but I cannot figure out the partition alignment. My raid has 3 disks and a chunk size of 64kib, thus a total stripe width of 192kib (data + parity). I am using sfdisk w/ sector units and I currently align everything to the stripe width size: dreamgate ~ # sfdisk -l -uS /dev/md_d0 Disk /dev/md_d0: 485990272 cylinders, 2 heads, 4 sectors/track Units = sectors of 512 bytes, counting from 0 Device Boot Start End #sectors Id System /dev/md_d0p1 384 314572799 314572416 83 Linux /dev/md_d0p2 314572800 629145599 314572800 83 Linux /dev/md_d0p3 629145600 3887922175 3258776576 83 Linux /dev/md_d0p4 1 383 383 83 Linux The problem is I cannot figure out how to deal with sector 0 which usually contains the mbr and partition table. So does the striping begin w/ sector 0 or w/ sector 1 because sector 0 is handled specially? If sector 0 is not handled specially and striping starts there, my partitions above are properly aligned otherwise they are off exactly 512 byte. Like I said, if someone could give me a hint, I'd really appreciate it. Thanks a lot in advance, matthew. -- 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
