Hi, I wondered about this as there are docs about it and it is not like "everybody complains". Docs: - https://help.ubuntu.com/lts/serverguide/advanced-installation.html - https://help.ubuntu.com/community/Installation/SoftwareRAID
I tested that with a virtual guest for that I set up 3x20GB Disks. I wanted to configure them the following way: Partitions on Each p1 = 1G p2 = 19G The small ones for boot on raid 1 (remember boot can only be raid 1, not 5,6,...) as outlined in the links above. disk1p1 - raid 1 boot disk2p1 - raid 1 boot disk3p1 - swap The bigger part in a raid 5 disk1p2 - raid 5 / disk2p2 - raid 5 / disk3p2 - raid 5 / Following the guides linked above with the described target in mind (to prove that not only the most default setup works) I ended up in the installer with this view: RAID1 device #0 - 998.7 MB Software RAID device 998.7 MB f ext4 /boot RAID5 device #1 - 40.9 GB Software RAID device 40.9 GB f ext4 / SCSI1 (0,0,0) (sda) - 21.5 GB ATA QEMU HARDDISK #1 primary 999.3 MB B K raid #2 primary 20.5 GB K raid SCSI2 (0,0,0) (sdb) - 21.5 GB ATA QEMU HARDDISK #1 primary 999.3 MB B K raid #2 primary 20.5 GB K raid SCSI2 (0,1,0) (sdc) - 21.5 GB ATA QEMU HARDDISK #1 primary 999.3 MB F swap swap #2 primary 20.5 GB K raid >From there I let the installer finish his work and it was booting and running right into the raid devices as it should. So I wonder what exactly is the issue that is left these days with Ubuntu 16.04? ** Changed in: grub-installer (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1315344 Title: Grub install failed on disks with software RAID To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1315344/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs