DBus interface for Hypervisor State

DBus interface for Hypervisor State

[Sampa Misra]

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Hi,

We (IBM) have a requirement to maintain the state of hypervisor/virtual
machine monitor in the bmc for several reasons like
1. Representing the state at bmc for logging purpose
2. To be aware that communication to hypervisor from bmc is possible

The states are usually kind of standard states like hypervisor booting,
boot completed, partitions running etc. We are planning to write a dbus
interface for this one and wondering whether it can fit in the phosphor
layer or open power layer or be just an IBM interface. The decision would
be taken based on the interest of the community to use the interface.

Thanks
Sampa

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Re: DBus interface for Hypervisor State

[Deepak Kodihalli]

On 19/04/19 11:23 AM, Sampa Misra wrote:
> Hi,
> 
> We (IBM) have a requirement to maintain the state of hypervisor/virtual 
> machine monitor in the bmc for several reasons like
> 1. Representing the state at bmc for logging purpose
> 2. To be aware that communication to hypervisor from bmc is possible
> 
> The states are usually kind of standard states like hypervisor booting, 
> boot completed, partitions running etc. We are planning to write a dbus 
> interface for this one and wondering whether it can fit in the phosphor 
> layer or open power layer or be just an IBM interface. The decision 
> would be taken based on the interest of the community to use the interface.
> 
> Thanks
> Sampa
> 

We spoke about this a bit on IRC. Based on that discussion and some more 
thinking, I believe this is what we can do :

- We already have a couple of interfaces to indicate the firmware boot 
progress (State.Boot.Progress) and the operating system/hypervisor's 
boot progress (State.OperatingSystem.Status). These are implemented by 
the host state manager application.

- What you need now are a couple of new states to indicate the 
os/hypervisor ready to boot and boot completed. These can just be 
additions to the State.OperatingSystem.Status interface.

Thanks,
Deepak