Re: [Qemu-devel] [RFC 1/3] block: Add ImageRotationalInfo

[Alberto Garcia]

On Mon 27 May 2019 03:44:59 PM CEST, Anton Nefedov wrote:
>> I think in general optimizing for SSDs should probably be the
>> default.  HDDs are slow anyway, so whoever uses them probably doesn’t
>> care about performance too much anyway...?  Whereas people using SSDs
>> probably do.  But as I said, we can and should always make a separate
>> decision for each case.
>
> Overall it looks good to me but I wonder how do we ensure both
> variants are test covered? Need a blockdev option to enforce the mode?

Max talked about a 30% slowdown on HDDs so I suppose it makes sense to
have an option to change that even if we optimize for SSDs by default.

Berto