Dear readers, I created 4 raid1-array and besides the different devices the mdadm command was exactly the same for all 4 arrays: md1 : active raid1 sdo1[1] sda1[0] 504768 blocks [2/2] [UU] md2 : active raid1 sdo2[1] sda2[0] 8000448 blocks [2/2] [UU] md3 : active raid1 sdo3[1] sda3[0] 4996032 blocks [2/2] [UU] md4 : active raid1 sdo4[1] sda4[0] 147332160 blocks [2/2] [UU] bitmap: 0/2 pages [0KB], 65536KB chunk md4 has a bitmap while md1,2,3 do not. I'm using mdadm 3.3 with a 3.14.12 kernel. Is that a new feature of mdadm 3.3? Any other explanation? Kind regards Peter Koch -- 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