Software raid

[cb3hn]

Installer crash on the end of the installation GUI wizard on 16.04LTS. No chance to choose "Install without GRUB2".

System setup:

- RAID5 array for root
- RAID5 array for swap

preinstalled package: sudo apt-get install --no-install-recommends mdadm

~/sudo mdadm --assemble --scan
mdadm: /dev/md/0 has been started with 4 drives.
mdadm: /dev/md/1 has been started with 4 drives.

ubuntu@ubuntu:~$ sudo mdadm --detail /dev/md0 /dev/md1
/dev/md0:
        Version : 1.2
  Creation Time : Thu Apr 21 04:37:19 2016
     Raid Level : raid5
     Array Size : 10243584 (9.77 GiB 10.49 GB)
  Used Dev Size : 3414528 (3.26 GiB 3.50 GB)
   Raid Devices : 4
  Total Devices : 4
    Persistence : Superblock is persistent

    Update Time : Mon May 2 01:30:46 2016
          State : clean
 Active Devices : 4
Working Devices : 4
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 512K

           Name : ubuntu:0 (local to host ubuntu)
           UUID : 47f8fb05:993343e1:a6e3a5fc:3bc5476b
         Events : 142

    Number Major Minor RaidDevice State
       4 8 1 0 active sync /dev/sda1
       1 8 17 1 active sync /dev/sdb1
       2 8 33 2 active sync /dev/sdc1
       3 8 49 3 active sync /dev/sdd1
/dev/md1:
        Version : 1.2
  Creation Time : Thu Apr 21 04:37:43 2016
     Raid Level : raid5
     Array Size : 751104 (733.62 MiB 769.13 MB)
  Used Dev Size : 250368 (244.54 MiB 256.38 MB)
   Raid Devices : 4
  Total Devices : 4
    Persistence : Superblock is persistent

    Update Time : Mon May 2 01:47:59 2016
          State : clean
 Active Devices : 4
Working Devices : 4
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 512K

           Name : ubuntu:1 (local to host ubuntu)
           UUID : 6736eae6:64e7ee1b:4894aaa0:79958d96
         Events : 39

    Number Major Minor RaidDevice State
       4 8 2 0 active sync /dev/sda2
       1 8 18 1 active sync /dev/sdb2
       2 8 34 2 active sync /dev/sdc2
       3 8 50 3 active sync /dev/sdd2

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.63
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CasperVersion: 1.376
Date: Mon May 2 01:31:47 2016
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --- apt-setup/restricted=false apt-setup/multiverse=false debian-installer/language=de keyboard-configuration/layoutcode?=de
LiveMediaBuild: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
ProcEnviron:
 LANGUAGE=de_DE.UTF-8
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)