Migrate Ubuntu Generation2 VM from Hyper-V to Nutanix AHV

Shares

In Acropolis OS  version 4.6.1 Nutanix introduced support for UEFI virtual machines. If you have AOS 4.6.1 you can migrate Generation 2 Hyper-V VMs to Nutanix AHV.

Today, I you can read how to migrate Ubuntu 14.04.3 generation 2 VM from Microsoft Hyper-V 2012R2 to Nutanix AHV.

Requirements:

  • Acropolis OS (AOS) 4.7.2 or newer
  • Acropolis HV (AHV – hypervisor) 20160601.20
  • connectivity between hyper-V hosts and Nutanix CVM
  • mounted container from Nutanix AHV to Hyper-V cluster. If you are wondering how to mount Nutanix AHV container on Hyper-v cluster – have a look at my blog post 
Acropolis storage mount to Hyper-V cluster

Acropolis storage mount to Hyper-V cluster

  • Nutanix Acropolis knowledge and Microsoft hyper-V knowledge 🙂
  • SCVMM – optional

Step #1 – Transfer virtual machine disks from legacy storage to Nutanix Acropolis

If you have SCVMM, add Acropolis container to Hyper-V cluster as new file share storage and use build in migration feature to move disks.

Migrate storage to Nutanix AHV

Migrate storage to Nutanix AHV

Step #2 – verify  Ubuntu version

[email protected]:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.3 LTS"
[email protected]:~$

Step #3 – verify if kernel has virIO drives

[email protected]:~$ grep -i virtio /boot/config-`uname -r`
CONFIG_NET_9P_VIRTIO=m
CONFIG_VIRTIO_BLK=y
CONFIG_SCSI_VIRTIO=m
CONFIG_VIRTIO_NET=y
CONFIG_CAIF_VIRTIO=m
CONFIG_VIRTIO_CONSOLE=y
CONFIG_HW_RANDOM_VIRTIO=m
CONFIG_VIRTIO=y
# Virtio drivers
CONFIG_VIRTIO_PCI=y
CONFIG_VIRTIO_BALLOON=y
CONFIG_VIRTIO_MMIO=y
CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
[email protected]:~$

Step #4 -confirm if the current initramfs has the virtio_scsi module built in

[email protected]:~$ cp -p /boot/initrd.img-`uname -r` /tmp/initrd.img-`uname -r`.gz
[email protected]:~$ zcat /tmp/initrd.img-`uname -r`.gz | cpio -it | grep virtio
lib/modules/3.13.0-32-generic/kernel/drivers/scsi/virtio_scsi.ko
lib/modules/3.13.0-32-generic/kernel/drivers/net/caif/caif_virtio.ko
103485 blocks
[email protected]:~$

In the Ubuntu 12.04.5 case the virtio_scsi module is already built into the initramfs image. There is no need to rebuild the initramfs.

Step #5 – update config files

[email protected]:~# cp /etc/init/tty1.conf /etc/init/ttyS0.conf
[email protected]:~# vi
[email protected]:~# vi /etc/init/ttyS0.conf

update /etc/init/ttyS0.conf replace or update last line with – exec /sbin/getty -8 115200 ttyS0 xterm

# tty1 - getty
#
# This service maintains a getty on tty1 from the point the system is
# started until it is shut down again.

start on stopped rc RUNLEVEL=[2345] and (
 not-container or
 container CONTAINER=lxc or
 container CONTAINER=lxc-libvirt)

stop on runlevel [!2345]

respawn
exec /sbin/getty -8 115200 ttyS0 xterm

Update grub config file, update or replace line #11 with  GRUB_CMDLINE_LINUX_DEFAULT=”console=ttyS0″

# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
# info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0
#GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=2
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT=""
GRUB_CMDLINE_LINUX=""

Update grub

[email protected]:~# update-grub2
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.19.0-25-generic
Found initrd image: /boot/initrd.img-3.19.0-25-generic
done
[email protected]:~#

Step #6 – convert VHDX disk or disks to RAW format supported by Nutanix

Log in to CVM over SSH and run below command to convert VHDX disks to RAW.

[email protected]:~$ qemu-img convert -f vhdx -O raw nfs://127.0.0.1/transfer/Ubuntu14043HV/Ubuntu16045HV_disk_1.vhdx nfs://127.0.0.1/transfer/Ubuntu14043HV/Ubuntu16045HV_disk_1.raw
[email protected]:~$

Step #7 – create new VM on Acropolis

Now, when we have disk in RAW format we can create new VM with RAW disk. Log in to Prism  and create VM. Make sure you set disk properly:

  • Type – DISK
  • Operation – CLONE FROM ADSF FILE
  • Bus Type – SCSI
  • Path – provide path to raw disk

and use RAW disk as source for clone. See below screenshot as reference.

Create VM on Acropolis

Create VM on Acropolis

  • Add network adapter and connect it to the right VLAN on AHV.

Power VM on and that’s it. Migration done. Lunch VM console and check VM connectivity.

[hr]

CHANGE LOG:
  • 1 Nov 2016 – updated AOS and AHV requirements

 

0 0 votes
Article Rating

Artur Krzywdzinski

Artur is Consulting Architect at Nutanix. He has been using, designing and deploying VMware based solutions since 2005 and Microsoft since 2012. He specialize in designing and implementing private and hybrid cloud solution based on VMware and Microsoft software stacks, datacenter migrations and transformation, disaster avoidance. Artur holds VMware Certified Design Expert certification (VCDX #077).

Subscribe
Notify of
guest
0 Comments
Inline Feedbacks
View all comments
0
Would love your thoughts, please comment.x
()
x

FOR FREE. Download Nutanix port diagrams

Join our mailing list to receive an email with instructions on how to download 19 port diagrams in MS Visio format.

NOTE: if you do not get an email within 1h, check your SPAM filters

You have Successfully Subscribed!

Don't miss any posts. Subscribe To Our Newsletter!!

Join our mailing list to receive the latest news and updates from www.vmwaremine.com.

You have Successfully Subscribed!

Pin It on Pinterest