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What --virt-type should I use with virt-install ?
June 23, 2010 - 6:50pm
When I look at "man virt-install" for Fedora 13 I see
--virt-type
The hypervisor to install on. Example choices are kvm, qemu, xen, or kqemu.
Availabile options are listed via 'virsh capabilities'
in the
But which should I use for which guest OS?
My host is a Fedora 13 with KVM.
So should I use --virt-type=kvm or --virt-type=qemu ?
And how do they differ?
Louise,
You should use kvm but this requires a cpu with the virtualization extensions. The qemu option uses only emulation so guest will run much slower in this mode.
Cool. Thanks.
I was under the impression, that KVM only worked on CPU's with AMD-V or VT, as RHEL doesn't give you KVM install options, if the CPU doesn't have either of these.
Is that because Red Hat doesn't want there customers to, by mistake, use QEMU rather than KVM?
Louise,
Yes, KVM *only* works on cpus with virtualization extensions. If your cpu doesn't have those features it will fallback to qemu so you don't have a choice in that case. You can also use kqemu if you have that option but kqemu isn't being maintained very much since most of the focus is now on kvm.
Awesome. Thanks for clearing that out about KVM/QEMU/KQEMU.
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