On Thursday May 23, lilha@legend.com.cn wrote: > [root@snap /root]# mkraid /dev/md9 > handling MD device /dev/md9 > analyzing super-block > /dev/hda8: device too small (0kB) > mkraid: aborted, see the syslog and /proc/mdstat for potential clues. > > > Can you tell me where is wrong? > thanks a lot. My best guess is that you need to reboot for the changes to the partition table to be read. What does 'cat /proc/partitions' show? 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