Bug 916052

Description of problem:
several guest life cycle results are not expect

Version-Release number of selected component (if applicable):
libvirt-0.10.2-18.el6.x86_64

How reproducible:
100%

Steps to Reproduce:
This comes from Jiri's reply:
> 
> Hi, Jiri
> 
> I have a question about guest lifecycle control and want your help.
> Many content of element not works, i don't know if i use it in a wrong way.

Well, not all life cycle controls are applicable to all hypervisors.
What works for Xen may not even make sense for qemu. However, I suspect
we failed to document it properly.

> #virsh shutdown aaa
> 
> <on_poweroff>destroy</on_poweroff>
> Domain aaa shut off and not power up again. -----> expect

Good.

> <on_poweroff>restart</on_poweroff>
> should power up again but not.              -----> not expect

This looks like a bug in qemu driver.

> <on_poweroff>preserve</on_poweroff>
> guest poweroff, nothing happend.            ----> how to use it ?

This makes sense for Xen but I doubt it is doable with qemu. However, we
should probably tell that when a user tries to create such domain.

> <on_poweroff>rename-restart</on_poweroff>
> guest poweroff, and should boot up again with newname? but it's only powered off.  --->not expect

Does not make sense for qemu. Again, we should not silently ignore this
option.

> #virsh reboot aaa
> 
> <on_reboot>destroy</on_reboot>
> guest not boot up again. it works.

Good.

> <on_reboot>restart</on_reboot>
> guest boot up again. it works.

Good.

> <on_reboot>preserve</on_reboot>
> guest poweroff, nothing happend.    -----> how to use it ?

Likely not doable but the result is bad anyway. We take it as "destroy",
which is wrong.

> <on_reboot>rename-restart</on_reboot>
> guest poweroff, and should boot up again with newname. but it's only powered off.  --->not expect

The same as with on_poweroff.

Actual results:
As steps

Expected results:
As steps

Additional info:
> should power up again but not.              -----> not expect
This looks like a bug in qemu driver.
I'll attach libvirt debug log for this.