Report of my virtual network lab migrated from virtualbox to bhyve

[Peter Grehan]

Hi Olivier,

>       If you create a sparse file for the bhyve raw disk (e.g. with
>     truncate -s), du will show the actual blocks used rather than the
>     total size.
>
>
> But can I truncate an already existing image disk (downloaded nanobsd
> image as example) ?

  Not without some processing. One way to do it might be a downloaded -> 
qcow2 -> raw using qemu-img, which will create sparse files if possible.

>     There is an em(4) emulation slowly being worked on. It should also
>     be possible to add altq functionality to FreeBSD's virtio net driver.
>
>
> Adding altq(4) to vtnet(4) should be a better idea.

  As bryanv@ mentioned, it's there with a conditional flag.

>       For internal-only networks, there will most likely be a user-space
>     ethernet switch (ala VDE) that bhyve network interfaces can be
>     pointed at.
>
>
> Great: Why not the high-perf netmap VALE switch ?

  That's being worked on, but I think that requires root access.

> Because with a dummy TCP iperf bench between bhyve guests report only
> 254 Mbits/sec.

  Hmmm, I've seen better numbers than that. What's your host h/w, guest 
config and iperf params ?

later,

Peter.