Open Stack

----- Original Message -----
> From: "Wuhongning" <wuhongning at huawei.com>
> To: "OpenStack Development Mailing List (not for usage questions)" <openstack-dev at lists.openstack.org>
> 
> +1, the hint should be persistent as other server instance metadata.

I don't think there is much disagreement that it makes sense to do this, but more how/where to do so. You can refer to the comments in the review Jay linekd for more background:

https://review.openstack.org/#/c/88983/17/specs/juno/persist-scheduler-hints.rst

> ________________________________
> From: Alex Xu [soulxu at gmail.com]
> Sent: Wednesday, October 29, 2014 9:11 PM
> To: OpenStack Development Mailing List (not for usage questions)
> Subject: Re: [openstack-dev] [Nova] Add scheduler-hints when
> migration/rebuild/evacuate
> 
> 
> 
> 2014-10-29 13:42 GMT+08:00 Chen CH Ji
> <jichenjc at cn.ibm.com<mailto:jichenjc at cn.ibm.com>>:
> 
> Yes, I remember that spec might talk about local storage (in local db?) and
> it can be the root cause
> 
> And I think we need persistent storage otherwise the scheduler hints can't
> survive in some conditions such as system reboot or upgrade ?
> 
> 
> Yeah, that's problem. And I have talk with Jay Lau, look like there already
> got agreement on persistent it.
> 
> 
> Best Regards!
> 
> Kevin (Chen) Ji 纪 晨
> 
> Engineer, zVM Development, CSTL
> Notes: Chen CH Ji/China/IBM at IBMCN   Internet:
> jichenjc at cn.ibm.com<mailto:jichenjc at cn.ibm.com>
> Phone: +86-10-82454158<tel:%2B86-10-82454158>
> Address: 3/F Ring Building, ZhongGuanCun Software Park, Haidian District,
> Beijing 100193, PRC
> 
> [Inactive hide details for Alex Xu ---10/29/2014 01:34:13 PM---On 2014年10月29日
> 12:37, Chen CH Ji wrote: >]Alex Xu ---10/29/2014 01:34:13 PM---On
> 2014年10月29日 12:37, Chen CH Ji wrote: >
> 
> From: Alex Xu <xuhj at linux.vnet.ibm.com<mailto:xuhj at linux.vnet.ibm.com>>
> To:
> openstack-dev at lists.openstack.org<mailto:openstack-dev at lists.openstack.org>
> Date: 10/29/2014 01:34 PM
> Subject: Re: [openstack-dev] [Nova] Add scheduler-hints when
> migration/rebuild/evacuate
> 
> ________________________________
> 
> 
> 
> On 2014年10月29日 12:37, Chen CH Ji wrote:
> 
> I think we already support to specify the host when doing evacuate and
> migration ?
> 
> Yes, we support to specify the host, but schedule-hints is different thing.
> 
> 
> if we need use hints that passed from creating instance, that means we need
> to persistent schedule hints
> I remember we used to have a spec for store it locally ...
> 
> 
> I also remember we have one spec for persistent before, but I don't know why
> it didn't continue.
> And I think maybe we needn't persistent schedule-hints, just add pass new
> schedule-hints when
> migration the instance. Nova just need provide the mechanism.
> 
> 
> Best Regards!
> 
> Kevin (Chen) Ji 纪 晨
> 
> Engineer, zVM Development, CSTL
> Notes: Chen CH Ji/China/IBM at IBMCN   Internet:
> jichenjc at cn.ibm.com<mailto:jichenjc at cn.ibm.com>
> Phone: +86-10-82454158<tel:%2B86-10-82454158>
> Address: 3/F Ring Building, ZhongGuanCun Software Park, Haidian District,
> Beijing 100193, PRC
> 
> [Inactive hide details for Alex Xu ---10/29/2014 12:19:35           PM---Hi,
> Currently migration/rebuild/evacuate didn't support           pass]Alex Xu
> ---10/29/2014 12:19:35 PM---Hi, Currently migration/rebuild/evacuate didn't
> support pass
> 
> From: Alex Xu <xuhj at linux.vnet.ibm.com><mailto:xuhj at linux.vnet.ibm.com>
> To:
> openstack-dev at lists.openstack.org<mailto:openstack-dev at lists.openstack.org>
> Date: 10/29/2014 12:19 PM
> Subject: [openstack-dev] [Nova] Add scheduler-hints when
> migration/rebuild/evacuate
> 
> ________________________________
> 
> 
> 
> Hi,
> 
> Currently migration/rebuild/evacuate didn't support pass
> scheduler-hints, that means any migration
> can't use schedule-hints that passed when creating instance.
> 
> Can we add scheduler-hints support when migration/rebuild/evacuate? That
> also can enable user
> move in/out instance to/from an server group.
> 
> Thanks
> Alex
> 
> 
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