[openstack-dev] [Nova] Host maintenance mode proposal.

2015-10-15 Thread Tang Chen 

Hi all,

I tried to implement a common host maintenance mode handling
in nova compute.

BP: https://blueprints.launchpad.net/nova/+spec/host-maintenance-mode
spec: https://review.openstack.org/#/c/228689/
patches: https://review.openstack.org/#/q/topic:bp/host-maintenance-mode,n,z

But according to John (johnthetubaguy), host maintenance mode is
a functionality we are going to remove. So would anybody give me
some advice if I want to go on with this work ?

BTW, if I want to talk about this in IRC meeting, which meeting should I
attend ? Nova API meeting on Tuesday ?

Thanks.
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Re: [openstack-dev] [Nova] Host maintenance mode proposal.

2015-10-15 Thread Tang Chen 


On 10/15/2015 05:23 PM, John Garbutt wrote:

On 15 October 2015 at 10:08, Tang Chen  wrote:

Hi all,

I tried to implement a common host maintenance mode handling
in nova compute.

BP: https://blueprints.launchpad.net/nova/+spec/host-maintenance-mode
spec: https://review.openstack.org/#/c/228689/
patches: https://review.openstack.org/#/q/topic:bp/host-maintenance-mode,n,z

But according to John (johnthetubaguy), host maintenance mode is
a functionality we are going to remove. So would anybody give me
some advice if I want to go on with this work ?

BTW, if I want to talk about this in IRC meeting, which meeting should I
attend ? Nova API meeting on Tuesday ?

Sorry, I hadn't spotted there was a spec up for review.
I will go take a look at that, and add my comments on there.


Thank you very much. :)



Certainly the XenAPI host maintenance mode was built for support of
XenServer pools.


Yes, I noticed that. And I was trying to do the same thing in libvirt 
driver.

But after digging into the code, I found that we can do this totally in
nova compute.

So the latest plan is to implement a common one in compute as the
default handling. Xen implemented its own version, that is OK. For those
drivers who don't have one, they can use the default one.

You can also refer to the v1 patch set. I think code is the best 
description.



That support is currently untested, so I want to push for that to be
deprecated, and eventually removed.


Please let me know your latest idea. And I'd like to help.

Thanks.



Thanks,
John

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Re: [openstack-dev] [Nova] Host maintenance mode proposal.

2015-10-15 Thread John Garbutt 
On 15 October 2015 at 10:08, Tang Chen  wrote:
> Hi all,
>
> I tried to implement a common host maintenance mode handling
> in nova compute.
>
> BP: https://blueprints.launchpad.net/nova/+spec/host-maintenance-mode
> spec: https://review.openstack.org/#/c/228689/
> patches: https://review.openstack.org/#/q/topic:bp/host-maintenance-mode,n,z
>
> But according to John (johnthetubaguy), host maintenance mode is
> a functionality we are going to remove. So would anybody give me
> some advice if I want to go on with this work ?
>
> BTW, if I want to talk about this in IRC meeting, which meeting should I
> attend ? Nova API meeting on Tuesday ?

Sorry, I hadn't spotted there was a spec up for review.
I will go take a look at that, and add my comments on there.

Certainly the XenAPI host maintenance mode was built for support of
XenServer pools.
That support is currently untested, so I want to push for that to be
deprecated, and eventually removed.

Thanks,
John

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Re: [openstack-dev] [Nova] Host maintenance mode proposal.

2015-10-15 Thread Tang Chen 

Hi all,

I have update the spec.

https://review.openstack.org/#/c/228689/

I think implement it on nova client side may be better.
Please help to review.

Thanks.

On 10/15/2015 05:08 PM, Tang Chen wrote:

Hi all,

I tried to implement a common host maintenance mode handling
in nova compute.

BP: https://blueprints.launchpad.net/nova/+spec/host-maintenance-mode
spec: https://review.openstack.org/#/c/228689/
patches: 
https://review.openstack.org/#/q/topic:bp/host-maintenance-mode,n,z


But according to John (johnthetubaguy), host maintenance mode is
a functionality we are going to remove. So would anybody give me
some advice if I want to go on with this work ?

BTW, if I want to talk about this in IRC meeting, which meeting should I
attend ? Nova API meeting on Tuesday ?

Thanks.


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