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On 8/29/2011 10:29 PM, Trey Dockendorf wrote:
<blockquote
cite="mid:CAN0oX1YyPyxtjx6oEzbHPqocm=9SrDTi8R+h5oa1M6knuW1HuA@mail.gmail.com"
type="cite">
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<div>Have you looked into using virt-manager? When I started
using KVM I found that new VM provisioning was
much simpler with that interface. <br>
</div>
</div>
</blockquote>
<br>
Alas, Virtmanager doesn't seem to be a supported program under
Gentoo - the distribution I use. If its X-based, it wouldn't work
anyhow - I'm strictly a command line shop.<br>
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<div><br>
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<div>Once you've created your domain with "virt-install" you can
make changes using virsh.</div>
<div><br>
</div>
<div>virsh -c qemu:///system edit Test</div>
<div><br>
</div>
<div>That will allow you to directly edit the domain.</div>
<div><br>
</div>
<div>In the virt-install line you used "bridge=br0" , maybe
replace that with "bridge=tap5". If that doesn't do it, once
your editing the XML you can try something like the
following...</div>
</div>
</blockquote>
<br>
I'm familiar with virsh edit and have used it to probe around a
bit. Actually tried the "bridge=tap5" a few days ago and get the
message:<br>
<br>
<i>ERROR internal error Failed to add tap interface to bridge.
tap5 is not a bridge device</i><br>
<br>
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<div><br>
</div>
<div>
<div> <interface type='bridge'></div>
<div> <mac address='52:54:00:4d:74:c7'/></div>
<div> <source bridge='tap5'/></div>
<div> <model type='virtio'/></div>
<div> <address type='pci' domain='0x0000' bus='0x00'
slot='0x03' function='0x0'/></div>
<div> </interface></div>
</div>
<div><br>
</div>
<div>That was created using virt-manager, so you probably need
to use what virt-install created for your mac address and
address.</div>
</div>
</blockquote>
<br>
Gave that a shot, attempting to create a new domain with "br0"
replaced by "tap5" and got the same error message:<br>
<br>
<i>error: internal error Failed to add tap interface to bridge. tap5
is not a bridge device</i><br>
<br>
<br>
<blockquote
cite="mid:CAN0oX1YyPyxtjx6oEzbHPqocm=9SrDTi8R+h5oa1M6knuW1HuA@mail.gmail.com"
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<div class="gmail_quote">
<div><br>
</div>
<div>Is your init failing on /dev/vda3 and then kernel panic?
If so it's likely your guest OS doesn't have the necessary
kernel modules loaded. Depending on your distro it will vary,
but using CentOS 6 I've found they are automatically loaded.
This is what's loaded in CentOS 6</div>
</div>
</blockquote>
<br>
Well, yes and no. Its failing with a kernel panic because KVM is
being started with if=none instead of if=virtio. If I manually
change it, it works fine. Just need to know where to update that in
the domain XML file.<br>
<br>
For what its worth, the image runs 100% fine with started manually
with:<br>
<br>
<i>kvm -net nic,model=virtio -net tap,ifname=tap5,script=no -drive
file=test1.img,if=virtio,boot=on -curses -no-reboot -m 2g -smp 2</i><br>
<br>
So I know the image is good.<br>
<br>
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<div><br>
</div>
<div># lsmod | grep virtio</div>
<div>
<div>virtio_blk 5087 5 </div>
<div>virtio_pci 6733 0 </div>
<div>virtio_ring 7169 2 virtio_blk,virtio_pci</div>
<div>virtio 4824 2 virtio_blk,virtio_pci</div>
</div>
<div><br>
</div>
<div>Try changing the disk to ide , and then verifying your
system is able to load the virtio modules.</div>
<div><br>
</div>
<div>Also , once you have your XML the way you like, if your
going to stick with command line look at using virsh though I
highly recommend virt-manager.</div>
<div><br>
</div>
<div>I'm still very new to KVM myself, so hopefully that was of
some use</div>
<div><br>
</div>
<div>- Trey</div>
</div>
</blockquote>
<br>
Thanks!<br>
<br>
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