[sheepdog-users] sheepdog vs ceph question

Walid Moghrabi walid.moghrabi at lezard-visuel.com
Mon May 5 11:56:14 CEST 2014

That's what I was thinking ... So I guess I should activate Object Cache one day to get better performances (anyway, I'm quite satisfied with current performances). 
But that means annoyance for livre migration right ? 
I must flush the cache manually before any live migration operation or is it automatic ? 

----- Mail original -----

De: "Liu Yuan" <namei.unix at gmail.com> 
À: "Walid Moghrabi" <walid.moghrabi at lezard-visuel.com> 
Cc: sheepdog-users at lists.wpkg.org 
Envoyé: Lundi 5 Mai 2014 11:37:05 
Objet: Re: [sheepdog-users] sheepdog vs ceph question 

On Mon, May 05, 2014 at 11:35:32AM +0200, Walid Moghrabi wrote: 
> Depending on my VM usage (most reads or most writes), I use writethrough (for mostly reads) or writeback (for mostly writes) ... but apparently, if I understood well, without object cache, this has no effect ... am I wrong ? 

If there is no object cache enabled, 'cache=xxx' in QEMU option has no effect 
at all. 


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