Ubuntu 14.04.4 lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 931.5G 0 disk ├─sda1 8:1 0 243M 0 part /boot ├─sda2 8:2 0 1K 0 part └─sda5 8:5 0 931.3G 0 part ├─ubuntu--vg-root (dm-0) 252:0 0 915.3G 0 lvm / └─ubuntu--vg-swap_1 (dm-1) 252:1 0 15.9G 0 lvm [SWAP] sdb 8:16 0 1.8T 0 disk └─ddf1_00000000000000004b1b92914b1b92914b0400004b040001 (dm-2) 252:2 0 1.8T 0 dmraid └─ddf1_00000000000000004b1b92914b1b92914b0400004b040001p1 (dm-3) 252:3 0 1.8T 0 part /media/Database sdc 8:32 0 1.8T 0 disk └─ddf1_00000000000000004b1b92914b1b92914b0400004b040001 (dm-2) 252:2 0 1.8T 0 dmraid └─ddf1_00000000000000004b1b92914b1b92914b0400004b040001p1 (dm-3) 252:3 0 1.8T 0 part /media/Database sdd 8:48 0 1.8T 0 disk └─sdd1 8:49 0 1.8T 0 part sr0 11:0 1 1024M 0 rom Strange that in Ubuntu 14.04.4, I get the following output with cat /proc/mdstat Personalities : unused devices: <none> In Ubuntu 16.04.1 lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 931.5G 0 disk ├─sda1 8:1 0 243M 0 part /boot ├─sda2 8:2 0 1K 0 part └─sda5 8:5 0 931.3G 0 part ├─ubuntu--vg-root (dm-0) 252:0 0 915.3G 0 lvm / └─ubuntu--vg-swap_1 (dm-1) 252:1 0 15.9G 0 lvm [SWAP] sdb 8:16 1 1.8T 0 disk sdc 8:32 1 1.8T 0 disk sdd 8:48 0 1.8T 0 disk └─sdd1 8:49 0 1.8T 0 part sr0 11:0 1 1024M 0 rom cat /proc/mdstat Personalities : unused devices: <none> -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1611277 Title: Kernel Shipped With Ubuntu 16.04.1 Cannot Recognize fakeRaid To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1611277/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs