Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid10 sdd2[3] sdc2[2] sdb2[1] sda2[0] 585673728 blocks super 1.2 512K chunks 2 near-copies [4/4] [UUUU] unused devices: