[pve-devel] qemu : add disk option for physical/logical block (could improve windows guest performance wit ceph)

[Thomas Lamprecht]

On 5/16/19 8:40 AM, Alexandre DERUMIER wrote:
>>> Sounds like a good idea. Maybe we can even set a better default (512e)? 
> 
> don't seem to works with all windows version (including KB on some versions) 
> https://support.microsoft.com/en-us/help/2510009/microsoft-support-policy-for-4k-sector-hard-drives-in-windows 

but all Windows >= 8 or >= 2012 support it for sure, so we could enable it for
those. If I read the table correctly then 512e is even "more" supported (older
ones with service pack or KB) as 4K native.

Some benchmarks would be great/interesting, and naturally a patch too :-)