Re: [Qemu-devel] [PATCH] block-raw: Make cache=off default again

[Kevin Wolf]

Anthony Liguori schrieb:
> Kevin Wolf wrote:
>> Since the patch that suggested it woudl revert qcow2 to writeback caching, in
>> fact none of the drivers has had cache=off as default any more. This patch
>> restores the desired behaviour.
>>   
> 
> When has cache=off ever been the default?
> 
> Moreover, why would we want to make it the default?  A patch with this 
> drastic of a change really need a more significant justification in the 
> change log.

Hm, you're right. Why is everyone talking about cache=off being default
except for qcow2? This was confusing me. Not handling the default
explicitly but checking the negation of it in 'else if (!(bdrv_flags &
BDRV_O_CACHE_WB))' has done the rest.

Sorry, I take this patch back.

Kevin