Hi Daniel,
Can you provide your exact crush map and exact crushtool command
that results in segfaults?
Johnu
On 9/16/14, 10:23 AM, "Daniel Swarbrick"
<daniel.swarbrick at profitbricks.com> wrote:
>Replying to myself, and for the benefit of other caffeine-starved people:
>
>Setting the last rule to "chooseleaf firstn 0" does not generate the
>desired results, and ends up sometimes putting all replicas in the same
>zone.
>
>I'm slowly getting the hang of customised crushmaps ;-)
>
>On 16/09/14 18:39, Daniel Swarbrick wrote:
>>
>> One other area I wasn't sure about - can the final "chooseleaf" step
>> specify "firstn 0" for simplicity's sake (and to automatically handle a
>> larger pool size in future) ? Would there be any downside to this?
>
>
>>
>> Cheers
>>
>> On 16/09/14 16:20, Loic Dachary wrote:
>>> Hi Daniel,
>>>
>>> When I run
>>>
>>> crushtool --outfn crushmap --build --num_osds 100 host straw 2 rack
>>>straw 10 default straw 0
>>> crushtool -d crushmap -o crushmap.txt
>>> cat >> crushmap.txt <<EOF
>>> rule myrule {
>>> ruleset 1
>>> type replicated
>>> min_size 1
>>> max_size 10
>>> step take default
>>> step choose firstn 2 type rack
>>> step chooseleaf firstn 2 type host
>>> step emit
>>> }
>>> EOF
>
>
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