On Tue, 19 Feb 2019 09:21:21 +0100 Marco Gaiarin wrote:

> Little cluster, 3 nodes, 4 OSD per node.
> 
> An OSD died, and ceph start to rebalance data between the OSD of the
> same node (not completing it, leading to 'near os full' warning).
> 
> As exist:
>       mon osd down out subtree limit = host
> 
> to prevent host rebalancing, there's some way to prevent intra-host OSD
> rebalancing?
> 
> 
You pretty much answered your question, as in a limit of "osd' would do
the trick, though not just for intra-host.

Wanting no re-balance ever you could also permanently set noout
and nodown and live with the consequences and warning state.


But of course everybody will (rightly) tell you that you need enough
capacity to at the very least deal with a single OSD loss.

Christian
-- 
Christian Balzer        Network/Systems Engineer                
[email protected]           Rakuten Communications
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