Re: Giant or Firefly for production

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Hi all, just an update

After setting "chooseleaf_vary_r" to 0 _and_ removing an pool with
erasure coding, I was able to run rbd map.

Thank you all for the help

.a.

On Fri, Dec 5, 2014 at 5:07 PM, Antonio Messina
<antonio.messina@xxxxxxxxxxx> wrote:
> On Fri, Dec 5, 2014 at 4:59 PM, Sage Weil <sage@xxxxxxxxxxxx> wrote:
>> On Fri, 5 Dec 2014, Antonio Messina wrote:
>>> On Fri, Dec 5, 2014 at 2:24 AM, Anthony Alba <ascanio.alba7@xxxxxxxxx> wrote:
>>> > Hi Cephers,
>>> >
>>> > Have anyone of you decided to put Giant into production instead of Firefly?
>>>
>>> This is very interesting to me too: we are going to deploy a large
>>> ceph cluster on Ubuntu 14.04 LTS, and so far what I have found is that
>>> the rbd module in Ubuntu Trusty doesn't seem compatible with giant:
>>>
>>>     feature set mismatch, my 4a042a42 < server's 2104a042a42, missing
>>> 21000000000
>>
>> Can you attach the output of
>>
>
> I modified the crushmap and set:
>
>     tunable chooseleaf_vary_r 0
>
> (it was 1 before)
> Now the cluster is rebalancing, and since it's on crappy hardware is
> taking some time.
>
> I'm pasting the output of the two commands, but please keep in mind
> that this is the output *after* I've updated the "chooseleaf_vary_r"
> tunable.
>
>>  ceph osd crush show-tunables -f json-pretty
>
> { "choose_local_tries": 0,
>   "choose_local_fallback_tries": 0,
>   "choose_total_tries": 50,
>   "chooseleaf_descend_once": 1,
>   "profile": "bobtail",
>   "optimal_tunables": 0,
>   "legacy_tunables": 0,
>   "require_feature_tunables": 1,
>   "require_feature_tunables2": 1,
>   "require_feature_tunables3": 0,
>   "has_v2_rules": 1,
>   "has_v3_rules": 0}
>
>>  ceph osd crush dump -f json-pretty
>
> I'm attaching it as a text file, as it is quite big and unreadable.
> However, from the output I see the following tunables:
>
>   "tunables": { "choose_local_tries": 0,
>       "choose_local_fallback_tries": 0,
>       "choose_total_tries": 50,
>       "chooseleaf_descend_once": 1,
>       "profile": "bobtail",
>       "optimal_tunables": 0,
>       "legacy_tunables": 0,
>       "require_feature_tunables": 1,
>       "require_feature_tunables2": 1,
>       "require_feature_tunables3": 0,
>       "has_v2_rules": 1,
>       "has_v3_rules": 0}}
>
> .a.
>
> --
> antonio.messina@xxxxxxxxxxx                     +41 (0)44 635 42 22
> antonio.s.messina@xxxxxxxxx
> S3IT: Service and Support for Science IT   http://www.s3it.uzh.ch/
> University of Zurich
> Winterthurerstrasse 190
> CH-8057 Zurich Switzerland



-- 
antonio.messina@xxxxxxxxxxx                     +41 (0)44 635 42 22
antonio.s.messina@xxxxxxxxx
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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