I don't have a fresh cluster on hand to double check, but the default is to select a different host for each replica. You can adjust that to fit your needs, we are using cabinet as the selection criteria so that we can lose an entire cabinet of storage and still function.
In order to store multiple replicas on the same node, you will need to change this to osd from host.
On Tue, Mar 3, 2015 at 7:39 PM, Azad Aliyar <azad.aliyar@xxxxxxxxxxxxxxxx> wrote:
I have a doubt . In a scenario (3nodes x 4osd each x 2replica) I tested with a node down and as long as you have space available all objects were there.
Is it possible all replicas of an object to be saved in the same node?
Is it possible to lose any?
Is there a mechanism that prevents replicas to be stored in another osd in the same node?
I would love someone to answer it and any information is highly appreciated.
--
Warm Regards, Azad Aliyar Linux Server Engineer Email : azad.aliyar@xxxxxxxxxxxxxxxx | Skype : spark.azad
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