oz-install failed with message "qemu-system-x86_64: warning: host doesn't support requested feature"

I was using oz-install to automize the generation of raw images, below are my config files.

corey.tdl

<template>
   <name>corey_x86_64</name>
   <description>CentOS 7 template</description>
   <os>
      <name>CentOS-7</name>
      <version>789</version>
      <arch>x86_64</arch>
      <install type='url'>
        <url>http://xx.xx.xx.xx/CentOS-7-x86_64.iso</url>
      </install>
   </os>
  <disk>
    <size>30</size>
  </disk>
</template>

corey.auto

echo 'Update packages'
yum update

The build command:

oz-install -d3 -a corey.auto -s "/home/corey/corey.img" -u corey.tdl -x corey.xml -t 3600

But it showed errors:

libvirt.libvirtError: internal error: process exited while connecting to monitor: 2021-11-30T06:37:12.755723Z qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2] qemu: linux kernel too old to load a ram disk

I've read this issue on Github, it might be the root cause somehow, but I don't know how to pass -cpu host to it while running with oz-install, and tried to set it in .tdl or qemu.conf, didn't work at all.

I was running on Ubuntu18.04, kernel 4.15.0-162-generic, libvirt 4.0.0, and QEMU version 2.11.1. Any ideas would be appreciated.

The problem doesn't matter to the Linux kernel but the syntax in .tdl file.

After I replaced install type='url' with install type='iso', it worked.

Here is the correct answer to me:

<install type='iso'>
  <iso>file:///home/corey/CentOS-7-x86_64.iso</iso>
</install>