[Bug 1544385] [NEW] Deploy of Virtual Machine fail using MAAS

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---Problem Description---
Similar to problem described in https://bugs.launchpad.net/maas/+bug/1523779.    The original problem states its happening on /dev/sda.   On my setup it is happening on /dev/vda because I am running on a vm guest.
 
---uname output---
Linux bootstrap 4.2.0-25-generic #30~14.04.1-Ubuntu SMP Mon Jan 18 16:25:16 UTC 2016 ppc64le ppc64le ppc64le GNU/Linux
 
Machine Type = S822L - Tuleta 
 
 
---Steps to Reproduce---
 Need to do this on Ubuntu 14.04.2 or higher.  Configured it with KVM.   Download git repo : 
git clone  https://github.com/avmgithub/joid4power.git
Then follow instructions to install maas VM from the README.md Once the environment is configured. You can proceed to recreate the problem.   
You can go to the maas gui and do a deploy on the bootstrap 
VM node.
The deployment will fail.   You can login to the bootstrap VM and look at the cloud-init logs.  Part of the logs look like :
Setting up swapspace version 1, size = 2097088 KiB
no label, UUID=a87ff72a-f839-4ad7-a767-33357c7488ef
Replacing config file /etc/default/grub with new version
Installing for powerpc-ieee1275 platform.
grub-install: error: Can't create file: No such file or directory.
failed to install grub!
Unexpected error while running command.
Command: ['install-grub', '/tmp/tmpLQWSyu/target', '/dev/vda']
Exit code: 1
Reason: -
Stdout: ''
Stderr: ''
Installation failed with exception: Unexpected error while running command.
Command: ['curtin', 'curthooks']
Exit code: 3
Reason: -

 
Userspace tool common name: juju, maas  
 
By the way I already tried the patches from the trunk that suppose to have fixed the original bug described in the link I cut and pasted.   It still fails for me.  I am thinking the fix is incomplete for the original problem

Hi,   I looked at the bug and I now see that they are putting fixes in
maas which is very similar to what I've done in my local maas
installation.    Please mirror so I can keep track of it.

** Affects: maas (Ubuntu)
     Importance: Undecided
     Assignee: Taco Screen team (taco-screen-team)
         Status: New


** Tags: architecture-ppc64le bugnameltc-136402 severity-high targetmilestone-inin14044
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Deploy of Virtual Machine fail using MAAS
https://bugs.launchpad.net/bugs/1544385
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