I also see this /dev/md_d127 array after reboot. It usually consists of a 1 to 3 devices that belongs to the real raid array.
I usually run mdadm --stop /dev/md_d127 mdadm --assemble --no-degraded /dev/md0 /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sde1 /dev/sdf1 /dev/sdg1 /dev/sdh1 /dev/sdi1 to get the real array one running. Annoying! This md_d127 gets created even if /dev/mdadm/mdadm.conf is empty. # cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid5 sdb1[0] sdc1[8] sde1[9] sdf1[5] sdg1[4] sdh1[3] sdi1[10] sda1[1] 13674582656 blocks super 1.2 level 5, 64k chunk, algorithm 2 [8/8] [UUUUUUUU] bitmap: 2/466 pages [8KB], 2048KB chunk # mdadm -Es ARRAY /dev/md/Apophis level=raid5 metadata=1.2 num-devices=8 UUID=2a54ea57:ce057f40:128e12a9:354e7dea name=:Apophis -- if array is given a name, a strange inactive md device appears instead of the one created upon reboot https://bugs.launchpad.net/bugs/576147 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs