On Wed, Nov 12, 2014 at 1:41 PM, houmles <houmles@xxxxxxxxx> wrote:
> Hi,
>
> I have 2 hosts with 8 2TB drive in each.
> I want to have 2 replicas between both hosts and then 2 replicas between osds on each host. That way even when I lost one host I still have 2 replicas.
>
> Currently I have this ruleset:
>
> rule repl {
> ruleset 5
> type replicated
> min_size 1
> max_size 10
> step take asterix
> step choose firstn -2 type osd
> step emit
> step take obelix
> step choose firstn 2 type osd
> step emit
> }
>
> Which works ok. I have 4 replicas as I want and PGs are distributed perfectly but when I run ceph df I have only 1/2 of my capacity which I should have.
> In total it's 32TB, 16TB in each host. If there is a 2 replicas on each host it should report around 8TB, right? It's reporting only 4TB in pool which is 1/8 of total capacity.
> Can anyone tell me what is wrong?
What version are you running? Can you copy-paste the command and
output, pointing out which bit you think is wrong? There are
occasionally oddities in the source data that confuse things and I
think there's new functionality to try and predict the "effective"
size that might have an issue.
-Greg
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