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Thank you Phil

On Sat, Dec 20, 2014 at 8:14 PM, Day, Phil <philip.day at hp.com> wrote:
> Hi,
>
> Your problem is that you still have the original ram filter configured, so
> its still removing all of the hosts. Try removing that and you should be OK.
> Note though that then any hosts not in an aggregate with a ram ratio set
> won't have a ram limit at all.
>
> You might also find the aggregate filter causes problems if you have a lot
> of hosts, as it does a dB look up for each host per VM request.
>
> Phil
>
> On 20 Dec 2014 14:28, mad Engineer <themadengin33r at gmail.com> wrote:
> Thanks Antonio,
>                           I added AggregateRamFilter in nova.conf of
> scheduler and restarted nova-scheduler service and updated aggregate.
>
> nova aggregate-set-metadata id ram_allocation_ratio=2.08
> and i can see that in
>
> nova aggregate-details 2
> +----+---------------+-------------------+----------------+--------------------------------------------------------+
> | Id | Name          | Availability Zone | Hosts          | Metadata
>                                             |
> +----+---------------+-------------------+----------------+--------------------------------------------------------+
> | 2  | overcommitted | second             | 'node8' |
> 'availability_zone=second', 'ram_allocation_ratio=2.08' |
> +----+---------------+-------------------+----------------+--------------------------------------------------------+
> but still scheduler log shows
>   "Filter AggregateRamFilter returned 1 host(s)"
> " Filter RamFilter returned 0 hosts"
> and fails with error "instances:17 does not have 2048 MB usable ram,
> it only has 613.5 MB usable ram."
>
>
> Any idea?
>
>
> On Sat, Dec 20, 2014 at 3:09 PM, Antonio Messina
> <antonio.s.messina at gmail.com> wrote:
>> On Sat, Dec 20, 2014 at 8:47 AM, mad Engineer <themadengin33r at gmail.com>
>> wrote:
>>> Hello All,
>>>               I would like to know if its possible to set
>>> "ram_allocation_ratio" per compute node or at least per Availability
>>> zone.
>>> I tried setting that per compute nodes,but i get "no hosts found"
>>> message when allocation ratio reaches default 1.5 .Changing it on
>>> controller fixes this,but i dont want it to be set globally across all
>>> AZ.Is it possible?
>>
>> As far as I know you can set this value only globally or per aggregate.
>>
>> In case you want to set it per host aggregate you have to enable
>> AggregateRamFilter. I never tried, but I guess you have to set this
>> value as an aggregate metadata, using
>>
>>     nova aggregate-set-metadata <id> ram_allocation_ratio=2
>>
>> If you test it and it works let us know please, I'm interested too but
>> didn't have time to test it yet.
>>
>> .a.
>>
>> --
>> antonio.s.messina at gmail.com
>> antonio.messina at uzh.ch                     +41 (0)44 635 42 22
>> S3IT: Service and Support for Science IT   http://www.s3it.uzh.ch/
>> University of Zurich
>> Winterthurerstrasse 190
>> CH-8057 Zurich Switzerland
>
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