#4692 [fvt]2.10:rcons does not work on ubuntu14.04.02 ppc64el PowerKVM guests

[junxiaw]

How to reproduce:
1.down the latest build
2.root@c910f03c05k05:~# lsdef -v
lsdef - Version 2.10 (git commit 22b5c8fd793ca32bb75f76899e1d27bd203a53c6, built Wed May 27 11:38:46 EDT 2015)
uname -a
Linux c910f03c05k05 3.16.0-34-generic #47~14.04.1-Ubuntu SMP Fri Apr 10 17:49:46 UTC 2015 ppc64le ppc64le ppc64le GNU/Linux
root@c910f03c05k0root@c910f03c05k05:~# rpower c910f03c05k08 boot
c910f03c05k08: on reset
root@c910f03c05k05:~# rcons c910f03c05k08
[Enter `^Ec?' for help]

root@c910f03c05k05:~#
------------------>could not get anyinfo here

[zhao er tao]

There are 3 kinds of issue I encountered:

1. the rcons will hung in the middle of provisioning.
   The issue had been fixed with adding 'console=hvc0' for kernel parameter
2. rcons output "remote detached from xxxxx.serial-<vm_name>-cons"
   The reason for this issue is there are more than one MN connected to the VM at the same time which cause the conserver service on those MN grab the tty console of the VM. Pls make sure there is only one console sever connect the VM when running rcons.</vm_name>
3. rpower off and then on won't output anything, but rpower reset will.
   You can use ctrl+e c o to update the console to see the consoles.

Pls let me know if you encountered any other kinds of issue for console.

[yangsong]

I don't think we should reject this bug, no matter what caused this problem , the console can not work when the user follows the steps in the documentation. If this is a usage error, please write down the limitation on the doc, if this cannot be fixed, add a known issue in the release notes and provide a workaround clear enough in this bug