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

[Dor Laor]

On 06/22/2009 04:08 PM, Anthony Liguori wrote:
> 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 

It should be the default (or at least O_DSYNC) since plain users are not 
aware that writeback might
cause their image to get corrupted on host crash.

> significant justification in the change log.
>
> Regards,
>
> Anthony Liguori