From: Avi Kivity <avi@qumranet.com>
To: Will Trives <will@trivescon.com.au>
Cc: kvm-devel@lists.sourceforge.net, Dor Laor <dor.laor@gmail.com>
Subject: Re: Virtio with multiple devices of the same type
Date: Wed, 13 Feb 2008 09:24:56 +0200 [thread overview]
Message-ID: <47B29B48.1070901@qumranet.com> (raw)
In-Reply-To: <1202873568.3319.280.camel@athas>
Will Trives wrote:
> Hello guys,
>
> Bug: A virtual machine/guest can only have one virtio block device and
> one virtio network device.
>
> Example command line:
>
> qemu-system-x86_64 -drive file=disk.qcow2,if=virtio,boot=on -net nic,model=virtio,macaddr=50:18:99:55:4E:43 -net tap -net nic,model=virtio,macaddr=51:17:99:55:4D:43 -net tap
>
You need to place the two nics on separate qemu vlans:
qemu-system-x86_64 -drive file=disk.qcow2,if=virtio,boot=on -net nic,model=virtio,macaddr=50:18:99:55:4E:43.vlan=0 -net tap,vlan=0 -net nic,model=virtio,macaddr=51:17:99:55:4D:43,vlan=1 -net tap,vlan=1
(a qemu vlan is just a virtual ethernet segment, not 802.3q (or whatever it's called) vlan)).
Ideally it should work without this, but there's a bug in one of the
virtio optimizations that prevents it from working correctly.
--
Any sufficiently difficult bug is indistinguishable from a feature.
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prev parent reply other threads:[~2008-02-13 7:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-13 3:32 Virtio with multiple devices of the same type Will Trives
2008-02-13 5:17 ` Anthony Liguori
2008-02-13 7:24 ` Avi Kivity [this message]
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