Date: Mon, 29 Oct 2012 23:58:24 +0000 From: Vincent Hoffman <vince@unsane.co.uk> To: sbruno@freebsd.org Cc: Sean Bruno <seanbru@yahoo-inc.com>, "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org> Subject: Re: dev/virtio stuff Message-ID: <508F1820.3050404@unsane.co.uk> In-Reply-To: <1351547382.3063.21.camel@powernoodle.corp.yahoo.com> References: <1351547382.3063.21.camel@powernoodle.corp.yahoo.com>
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On 29/10/2012 21:49, Sean Bruno wrote:
> So ... I see we have virtio nowish. I've started my hackery to make
> some man(4) pages for this, but have some questions. Doing some raw
> QEMU things, I can't quite see how to get the virtio blk and net devices
> working.
>
> I've loaded the virtio drivers as modules. Is this not going to work in
> this case? I don't see the virtio versions of disk devices in /dev so
> I'm not sure what the problem here is.
Modules work for me.
[root@fbsd ~]# grep v /boot/loader.conf
virtio_load="YES"
virtio_pci_load="YES"
virtio_blk_load="YES"
if_vtnet_load="YES"
virtio_balloon_load="YES"
[root@fbsd ~]# mount
/dev/vtbd0s1a on / (ufs, local)
devfs on /dev (devfs, local, multilabel)
/dev/vtbd0s1e on /tmp (ufs, local, soft-updates)
/dev/vtbd0s1f on /usr (ufs, NFS exported, local, soft-updates)
/dev/vtbd0s1d on /var (ufs, local, soft-updates)
devfs on /var/named/dev (devfs, local, multilabel)
[root@fbsd ~]# ifconfig vtnet0
vtnet0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST>
metric 0 mtu 1500
options=c07bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWTSO,LINKSTATE>
ether 54:52:00:2a:63:af
inet 213.xxx.xxx.13 netmask 0xfffffc00 broadcast 213.xxx.xxx.255
inet6 fe80::5652:ff:fe2a:63af%vtnet0 prefixlen 64 scopeid 0x1
inet6 2001:470:xxx:xxx::1 prefixlen 64
inet 10.10.24.1 netmask 0xffffff00 broadcast 10.10.24.255
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
media: Ethernet 1000baseT <full-duplex>
status: active
[root@fbsd ~]# uname -a
FreeBSD fbsd.bmk.namesco.net 10.0-CURRENT FreeBSD 10.0-CURRENT #33
r241491M: Sat Oct 13 01:34:48 BST 2012
toor@fbsd.bmk.namesco.net:/usr/obj/usr/src/sys/unsane-vm amd64
Relevent bits in libvirt config (kvm running on centos5)
<disk type='block' device='disk'>
<driver name='qemu' type='raw'/>
<source dev='/dev/vg_data/vm.unsane.co.uk'/>
<target dev='vda' bus='virtio'/>
<alias name='virtio0'/>
<address type='drive' controller='0' bus='0' unit='0'/>
</disk>
<controller type='ide' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01'
function='0x1'/>
</controller>
<interface type='bridge'>
<mac address='54:52:00:2a:63:af'/>
<source bridge='br0'/>
<target dev='vnet0'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03'
function='0x0'/>
</interface>
Not sure if thats useful to you or not?
Vince
>
> http://people.freebsd.org/~sbruno/virtio.txt
>
> Sean
>
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