Re: [Qemu-devel] [PATCH 00/17] Support mismatched host and guest logical block sizes

[Paolo Bonzini]

On 12/14/2011 12:13 PM, Kevin Wolf wrote:
> As we discussed before, the really interesting point here is defaults,
> and whatever you choose to do is wrong in some respect.
>
> So it looks like you chose to make the virtual device default to the
> host block size.

... wait wait, I default to 512. :)

Here is the rationale.  512-over-4k may be slow, but is safe (but it is 
not slow if you align partitions properly).  4k-over-512 is unsafe.  So, 
defaulting to 512 seemed the right thing after all.

Paolo