On Tue, Jan 22, 2013 at 11:16 AM, Chuck Munro <[log in to unmask]> wrote:
> On 01/22/2013 03:12 AM, David Sommerseth wrote:
>>
>> On 22/01/13 07:34, Chuck Munro wrote:
>>>
>>> - I tried to use the Virtio flavor of disk, but the BSD-based VMs can't
>>> use them, so I had to stay with IDE disk emulation.
>>
>>
>> Depending on the BSD flavour, of course, but FreeBSD 8.2+ and 9 have
>> virtio support ...
>>
>>    <http://www.area536.com/projects/freebsd-as-a-kvm-guest-using-virtio/>
>>    <http://people.freebsd.org/~kuriyama/virtio/>
>>
>> I believe there are some ongoing work for virtio support in both OpenBSD
>> and NetBSD as well.  But that's also all I know.
>>
>> --
>> kind regards,
>>
>> David Sommerseth
>>
>
> Many thanks for the info, David.  Very useful.

> As it happens, I'm testing with multiple instances of m0n0wall, which is
> based on FreeBSD v6.  I also have an instance of pfSense 2.0.2, which is
> based on FreeBSD 8.1, so I guess I'm out of luck until m0n0wall moves to
> v8.3 (in beta) and pfSense moves to v9 with rev.2.1.  That explains the
> problem with Virtio.

Do you have any compelling reason to use IDE based emulation, instead of SCSI?

> Meanwhile, I tested an instance of Linux-based IPCop, which did use a Virtio
> disk, but still had the problem of writes once per second.  It's as if
> libvirtd does a sync every second, and there's some sort of data being
> written each time.  Very strange.  I just discovered the linux-kvm.org
> forum, so I probably should post my question there.
>
> Chuck