Re: [Qemu-devel] [PATCH] Warn if a qcow (not qcow2) file is opened

[Anthony Liguori]

Kevin Wolf wrote:
> Avi Kivity schrieb:
>   
> > The qcow block driver format is no longer maintained and likely contains
> > serious data corruptors.  Urge users to stay away for it, and advertise
> > the new and improved replacement.
> >
> > Signed-off-by: Avi Kivity <address@hidden>
> >     
>
> vvfat is using qcow internally, so the warning will appear there, too.
> Not that warning against vvfat would be a bad thing, but this error
> message could be confusing.
>
> Maybe we're lucky enough and vvfat survives a s/qcow/qcow2/, but I
> really never wanted to touch that code...
>   

I'm not sure how I feel about this.  Can we prove qcow is broken?  Is it 
only broken for writes and not reads?

If we're printing a warning, does that mean we want to deprecate qcow 
and eventually remove it (or remove write support, at least)?

Regards,

Anthony Liguori