Thanks for your answers Craig, it seems this is a niche use case for Ceph, not 
a lot of replies from the ML. 

Cheers

--
Cédric Lemarchand

> Le 11 mai 2014 à 00:35, Craig Lewis <[email protected]> a écrit :
> 
>> On 5/10/14 12:43 , Cédric Lemarchand wrote:
>> Hi Craig,
>> 
>> Thanks, I really appreciate the well detailed response.
>> 
>> I carefully note your advices, specifically about the CPU starvation 
>> scenario, which as you said sounds scary.
>> 
>> About IO, datas will be very resilient, in case of crash, loosing not fully 
>> written objects will not be a problem (they will be re uploaded later), so I 
>> think in this specific case, disabling journaling could be a way to improve 
>> IO.
>> How Ceph will handle that, are there caveats other than just loosing objects 
>> that was in the data path when the crash occurs ? I know it could sounds 
>> weird, but clients workflow could support such thing. 
>> 
>> Thanks !
>> 
>> --
>> Cédric Lemarchand
>> 
>> Le 10 mai 2014 à 04:30, Craig Lewis <[email protected]> a écrit :
> 
> Disabling the journal does make sense in some cases, like all the data is a 
> backup copy.  
> 
> I don't know anything about how Ceph behaves in that setup.  Maybe somebody 
> else can chime in?
> 
> -- 
> Craig Lewis 
> Senior Systems Engineer
> Office +1.714.602.1309
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