[pve-devel] Fwd: Re: recommanded cache setting for rbd image

[Stefan Priebe - Profihost AG]

Am 06.11.2012 16:17, schrieb Dietmar Maurer:
>> Subject: Re: [pve-devel] Fwd: Re: recommanded cache setting for rbd image
>>
>>> Yes, it's safe, in the meaning of "you can break your filesystem".
>>>
>>> But you can loose last x seconds of writes if case of powerfailure.
>>
>> But this is standard behavior, also on physical hosts? I guess we loose much
>> performance with those syncs. Why do we want to be safer than a physical
>> host?
>
> Maybe it is needed for complex file formats like qcow2?
>
> So we should have a cache default per storage plugin?

I would prefer this. Alexandre what do you think?

Stefan