LVM based installation fails with - Unable to install the selected kernel - message

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---Problem Description---
LVM based installation fails with "Unable to install the selected kernel" message

---uname output---
linux-image-3.16.0-10-generic

Machine Type = POWER8

---Steps to Reproduce---
1) Start Ubuntu 14.10 installation as a Power KVM guest.
2) Select LVM based partition scheme. Go with the default values with /home as a separate mount point.
3) Continue with the installation. While trying to install linux-generic image installation fails with following error :

                  [!!] Configuring linux-image-3.16.0-10-generic

                    Unable to install the selected kernel
      An error was returned while trying to install the kernel into the
      target system.

      Kernel package: 'linux-generic'.

      Check /var/log/syslog or see virtual console 4 for the details.

                                  <Continue>

Install method: DVD

Install disk info: The partition tables of the following devices are changed:
    LVM VG 14102-vg, LV home
    LVM VG 14102-vg, LV root
    LVM VG 14102-vg, LV swap_1
   Virtual disk 1 (vda)

The following partitions are going to be formatted:
   LVM VG 14102-vg, LV home as ext4
   LVM VG 14102-vg, LV root as ext4
   LVM VG 14102-vg, LV swap_1 as swap
   partition #2 of Virtual disk 1 (vda) as ext2

Install ISO Information: Ubuntu 14.10 Aug 25 Daily ISO

Mounted file systems when problem occured.

/target/var/log # df -h
Filesystem Size Used Available Use% Mounted on
none 816.6M 2.4M 814.3M 0% /run
devtmpfs 3.9G 0 3.9G 0% /dev
/dev/sr0 575.8M 575.8M 0 100% /cdrom
/dev/mapper/14102--vg-root
                          6.3G 621.9M 5.3G 10% /target
/dev/vda2 236.3M 26.2M 197.9M 12% /target/boot
/dev/mapper/14102--vg-home
                         68.9G 51.8M 65.4G 0% /target/home
/dev/sr0 575.8M 575.8M 0 100% /target/media/cdrom
/target/var/log #

/var/run # mount
rootfs on / type rootfs (rw,size=4140288k,nr_inodes=64692)
none on /run type tmpfs (rw,nosuid,relatime,size=836224k,mode=755)
none on /proc type proc (rw,relatime)
none on /sys type sysfs (rw,relatime)
devtmpfs on /dev type devtmpfs (rw,relatime,size=4140288k,nr_inodes=64692,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
/dev/sr0 on /cdrom type iso9660 (ro,relatime)
/dev/mapper/14102--vg-root on /target type ext4 (rw,relatime,errors=remount-ro,data=ordered)
/dev/vda2 on /target/boot type ext2 (rw,relatime)
/dev/mapper/14102--vg-home on /target/home type ext4 (rw,relatime,data=ordered)
/dev/sr0 on /target/media/cdrom type iso9660 (ro,relatime)
/var/run #

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Default Comment by Bridge

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Default Comment by Bridge

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Default Comment by Bridge

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Default Comment by Bridge

[Anton Blanchard (anton-samba)]

Setting up linux-image-3.16.0-10-generic (3.16.0-10.15) ...
Running depmod.
update-initramfs: deferring update (hook will be called later)
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 3.16.0-10-generic /boot/vmlinux-3.16.0-10-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.16.0-10-generic /boot/vmlinux-3.16.0-10-generic
update-initramfs: Generating /boot/initrd.img-3.16.0-10-generic
stdin: Illegal seek
mkinitramfs: for root missing /sys/block/ entry
mkinitramfs: workaround is MODULES=most
mkinitramfs: Error please report the bug

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------- Comment From <email address hidden> 2014-09-05 09:58 EDT-------
update-initramfs: Generating /boot/initrd.img-3.16.0-10-generic <----- We are in generate_initramfs()

so we are calling : mkinitramfs ${OPTS} "${initramfs}.new" "${version}"

stdin: Illegal seek <---- This is a strange message
mkinitramfs: for root missing /sys/block/ entry <--- these 2 messages are not in
mkinitramfs: workaround is MODULES=most default mkinitramfs

So I suspect another command called by mkinitramfs to fail.

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------- Comment From <email address hidden> 2014-09-17 14:57 EDT-------
Tried to reproduce problem with current installation ISO.
ubuntu@test:~$ uname -a
Linux test 3.16.0-14-generic #20-Ubuntu SMP Sat Sep 6 23:45:12 UTC 2014 ppc64le ppc64le ppc64le GNU/Linux

1) case of installation using LVM without creating /home yet during installation

=> no problem so far
and manually reproducing the supposed failing mkinitramfs using:
ubuntu@test:~$ sudo bash -x /etc/kernel/postinst.d/initramfs-tools 3.16.0-14-geeric /boot/vmlinux-3.16.0-14-generic > /tmp/L 2>&1
ubuntu@test:~$ cat /tmp/L
+ version=3.16.0-14-generic
+ bootopt=
+ '[' -z 3.16.0-14-generic ']'
+ '[' -n '' ']'
+ '[' -n /boot/vmlinux-3.16.0-14-generic ']'
++ dirname /boot/vmlinux-3.16.0-14-generic
+ bootdir=/boot
+ bootopt='-b /boot'
+ '[' -n '' ']'
+ INITRAMFS_TOOLS_KERNEL_HOOK=1
+ update-initramfs -c -t -k 3.16.0-14-generic -b /boot
update-initramfs: Generating /boot/initrd.img-3.16.0-14-generic

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------- Comment From <email address hidden> 2014-09-22 11:07 EDT-------
I tried the latest 14.10 build (Sept 22). With this build I am able to perform an LVM based installation.
This problem is fixed with latest build.