[Samba] AD DC as KVM guest on file server host?

[Sketch]

On Thu, 29 Dec 2016, Filippe LeMarchand via samba wrote:

> Is kvm I/O realy disadventage? I use samba file server as kvm guest (LVM
> storage pool) in some setups and disn't notice any problems. Sequential
> read/write speed isn't noticeably different from non-virtualized samba
> host. Did I miss something and should expect sudden trouble?

It depends greatly on your setup.  Paravirtualized I/O (/dev/vdX) and raw 
volumes (or LVs) will give you nearly native performance.  As long as you 
are using paravirtualized I/O you will probably not notice the difference 
unless your server is very heavily loaded.  Also, unless you have a lot of 
spindles or are using fast SSDs, your disk I/O is more likely to be the 
weak point anyway.