[Openstack] [Nova] Instance Type Extra Specs clarifications

Vinay Bannai vbannai at gmail.com
Sat Sep 8 22:26:07 UTC 2012


Sorry Yunhong, it was my mistake. I was able to get it to work with your
changes.
I am a little confused by the terminology of "instance_id" and "flavor_id"
in the tables. Either their meaning is crossed or I am not reading it
right.

Vinay

On Sat, Sep 8, 2012 at 12:02 PM, Vinay Bannai <vbannai at gmail.com> wrote:

> Thanks Yunhong,
>
> I picked your changes for flavors.py from your review to give it a try in
> my setup. I wrote a little python script to create a flavor id and set_key
> using the new RESTful apis that you defined. After creating the flavor,
> when I try to set the key I am getting error message from the nova side.
> Do I need pick to any changes from nova side to make it work? I can send
> you my sample code and error message privately or put it on the mailing
> list if that helps.
>
> Vinay
>
>
> On Sat, Sep 8, 2012 at 6:42 AM, Jiang, Yunhong <yunhong.jiang at intel.com>wrote:
>
>>  The extra_specs do have the RESTful interface as
>> “/flavors/flavor_type/os-extra_specs”. You can refer to
>> https://review.openstack.org/#/c/10768/ for some changes. (I didn’t
>> update the patch because I’m recently busy on another task, and will
>> restore that patch when I finish current task).****
>>
>> ** **
>>
>> Thanks****
>>
>> --jyh****
>>
>> ** **
>>
>> *From:* Dugger, Donald D
>> *Sent:* Saturday, September 08, 2012 4:28 AM
>> *To:* Vinay Bannai; Patrick Petit; Jiang, Yunhong
>> *Cc:* openstack at lists.launchpad.net (openstack at lists.launchpad.net)
>> *Subject:* RE: [Openstack] [Nova] Instance Type Extra Specs
>> clarifications****
>>
>> ** **
>>
>> Well, Yunhong added the API to allow you to update the extra specs table
>> so he should be able to give you the details on that (he’s in China, he
>> might not get back to you until next week).****
>>
>> ** **
>>
>> Also, make sure you add a scope (where scope is a string followed by a
>> `:’ at the beginning of the key) to whatever key you are adding to the
>> extra specs table, otherwise your key will create problems with some of the
>> scheduler filters.****
>>
>> ** **
>>
>> --****
>>
>> Don Dugger****
>>
>> "Censeo Toto nos in Kansa esse decisse." - D. Gale****
>>
>> Ph: 303/443-3786****
>>
>> ** **
>>
>> *From:* Vinay Bannai [mailto:vbannai at gmail.com]
>> *Sent:* Friday, September 07, 2012 2:20 PM
>> *To:* Patrick Petit
>> *Cc:* Dugger, Donald D; openstack at lists.launchpad.net (
>> openstack at lists.launchpad.net)
>> *Subject:* Re: [Openstack] [Nova] Instance Type Extra Specs
>> clarifications****
>>
>> ** **
>>
>> Hello all,****
>>
>> ** **
>>
>> I am part of the SF south bay meetup group and trying to add a Disk I/O
>> QoS feature which is based on the blkiotune in libvirt. ****
>>
>> We would like to add flavor types in which we specify the blkiotune in
>> the create flavor screen. After reviewing the discussions and some emails
>> it appears that it makes sense to use the "instance_type_extra_specs" to
>> add the blkiotune as a key/value pair instead of extending the
>> "instance_type" table in nova db. ****
>>
>> ** **
>>
>> I am able to use nova-manage to create instance type and use "set_key" to
>> add extra specs. The set_key seems to make a direct call to the db to
>> insert the keys whereas the instance_type create takes the more traditional
>> path through the flavomanage controller. However I notice that there is no
>> documentation on how to add the extra_specs keys using a RESTful api. Is
>> this something still in discussions? ****
>>
>> ** **
>>
>> Thanks****
>>
>> Vinay****
>>
>> ** **
>>
>> On Tue, Aug 28, 2012 at 8:02 AM, Patrick Petit <
>> patrick.michel.petit at gmail.com> wrote:****
>>
>> Hi Don,****
>>
>> ** **
>>
>> I added a comment in https://bugs.launchpad.net/nova/+bug/1039386regarding your point.
>> ****
>>
>> Best regards,****
>>
>> Patrick****
>>
>> 2012/8/24 Dugger, Donald D <donald.d.dugger at intel.com>****
>>
>> ** **
>>
>> Patrick-****
>>
>>  ****
>>
>> We’ve enhanced `nova-manage’ to manipulate the `extra_specs’ entries,
>> c.f. https://blueprints.launchpad.net/nova/+spec/update-flavor-key-value,
>>   You can add an `extra_specs’ key/value pair to a flavor with the command:
>> ****
>>
>>  ****
>>
>>                 nova-manage instance_type add_key m1.humongous cpu_type
>> itanium****
>>
>>  ****
>>
>> And delete a key/value pair with the command:****
>>
>>  ****
>>
>>                 nova-manage instance_type del_key m1.humongous cpu_type**
>> **
>>
>>  ****
>>
>> We’re in the process of enhancing `python-novaclient’ and Horizon with
>> similar capabilities and hope to have them ready for the Folsom release.*
>> ***
>>
>>  ****
>>
>> Currently, there’s no hook to set `extra_specs’ through the `nova.conf’
>> file, the mechanism is to dynamically add the `extra_specs’ key/values
>> after the administrator has created a flavor.****
>>
>>  ****
>>
>> Currently, the keys are completely free form but there are some issues
>> with that so that should change.  Checkout the bug:****
>>
>>  ****
>>
>>                 https://bugs.launchpad.net/nova/+bug/1039386****
>>
>>  ****
>>
>> Based upon that bug we need to put some sort of scope on the keys to
>> indicate which components a key applies to. I’m in favor of adding a new
>> column to the `extra_specs’ table that would explicitly set the scope but
>> an alternative would be to encode the scope into the key itself, something
>> like `TrustedFilter:trust’ to indicate that  the `trust’ key only applies
>> to the `TrustedFilter’ scheduler component.  Feel free to chime in on the
>> BZ entry on how to specify the scope, once we decide on how to deal with
>> this I’ll create a patch to handle it.****
>>
>>  ****
>>
>> --****
>>
>> Don Dugger****
>>
>> "Censeo Toto nos in Kansa esse decisse." - D. Gale****
>>
>> Ph: 303/443-3786****
>>
>>  ****
>>
>> *From:* openstack-bounces+donald.d.dugger=intel.com at lists.launchpad.net[mailto:
>> openstack-bounces+donald.d.dugger=intel.com at lists.launchpad.net] *On
>> Behalf Of *Patrick Petit
>> *Sent:* Friday, August 24, 2012 7:13 AM
>> *To:* openstack at lists.launchpad.net (openstack at lists.launchpad.net)
>> *Subject:* [Openstack] [Nova] Instance Type Extra Specs clarifications***
>> *
>>
>>  ****
>>
>> Hi,****
>>
>>  ****
>>
>> Could someone give a practical overview of how configuring and using the
>> instance type extra specs extension capability introduced in Folsom?****
>>
>>  ****
>>
>> If how extending an instance type is relatively clear.****
>>
>>  ****
>>
>> Eg.: #nova-manage instance_type set_key --name=<my.instancetype> --key
>> <cpu_arch> --value <'s== x86_64'> ****
>>
>>  ****
>>
>> The principles of capability advertising is less clearer. Is it assumed
>> that the key/value pairs are always declared statically as flags in
>> nova.conf of the compute node, or can they be generated dynamically and if
>> so, who would that be? And also, are the keys completely free form strings
>> or strings that are known (reserved) by Nova?****
>>
>>  ****
>>
>> Thanks in advance for clarifying this.****
>>
>>  ****
>>
>> Patrick****
>>
>>
>>
>> ****
>>
>> ** **
>>
>> --
>> *"Give me a place to stand, and I shall move the earth with a lever"*****
>>
>>
>> _______________________________________________
>> Mailing list: https://launchpad.net/~openstack
>> Post to     : openstack at lists.launchpad.net
>> Unsubscribe : https://launchpad.net/~openstack
>> More help   : https://help.launchpad.net/ListHelp****
>>
>>
>>
>> ****
>>
>> ** **
>>
>> --
>> Vinay Bannai
>> Email: vbannai at gmail.com
>> Google Voice: 415 938 7576****
>>
>
>
>
> --
> Vinay Bannai
> Email: vbannai at gmail.com
> Google Voice: 415 938 7576
>
>


-- 
Vinay Bannai
Email: vbannai at gmail.com
Google Voice: 415 938 7576
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack/attachments/20120908/568c568b/attachment.html>


More information about the Openstack mailing list