Created attachment 421406 [details]
log from LIBGUESTFS_TRACE=1

Description of problem:
The source KVM guest rhel3u9 is installed with virtio driver, but after conversion, it will become IDE (network and block).

Before conversion info in guest:
# lspci
00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02)
00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II]
00:01.1 IDE interface: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II]
00:01.2 USB Controller: Intel Corporation 82371SB PIIX3 USB [Natoma/Triton II] (rev 01)
00:01.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 03)
00:02.0 VGA compatible controller: Cirrus Logic GD 5446
00:03.0 Ethernet controller: Unknown device 1af4:1000
00:04.0 SCSI storage controller: Unknown device 1af4:1001
00:05.0 RAM memory: Unknown device 1af4:1002
[root@localhost root]# lsmod |grep virtio
virtio_pci              6024   1 
virtio_ring             2892   0  [virtio_pci]
virtio_blk             28944   3 
virtio_net             10440   2 
virtio                  3692   0  [virtio_pci virtio_blk virtio_net]
# cat /etc/modules.conf
alias eth0 virtio_net
 


After conversion info in guest:
# lspci
00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02)
00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II]
00:01.1 RAM memory: Unknown device 1af4:0200
00:01.2 IDE interface: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II]
00:01.3 USB Controller: Intel Corporation 82371SB PIIX3 USB [Natoma/Triton II] (rev 01)
00:01.4 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 03)
00:02.0 VGA compatible controller: Cirrus Logic GD 5446
00:03.0 Ethernet controller: Intel Corporation 82540EM Gigabit Ethernet Controller (rev 03)
# lsmod |grep virtio
# cat /etc/modules.conf
alias eth0 e1000


Version-Release number of selected component (if applicable):
virt-v2v-0.6.0-3.el5

How reproducible:
always

Steps to Reproduce:
1.#virt-v2v -f /etc/virt-v2v.conf -i libvirtxml -o rhev -osd 10.66.90.115:/vol/v2vwulinglu/wulingluv2v/fcp_export virtio-rhel39-32.xml
virt-v2v: No capability in config matches os='linux' name='virtio' distro='rhel' major='3' minor='9'
virt-v2v: rhel39-32 configured without virtio drivers 




  
Actual results:
after conversion, it will become IDE

Expected results:
rhel3u9 remain virtio

Additional info:
# cat virtio-rhel39-32.xml 
<domain type='kvm' id='5'>
  <name>rhel39-32</name>
  <uuid>4543fd70-79d0-b74f-ded7-3cb394a49f52</uuid>
  <memory>524288</memory>
  <currentMemory>524288</currentMemory>
  <vcpu>1</vcpu>
  <os>
    <type arch='x86_64' machine='rhel5.4.0'>hvm</type>
    <boot dev='hd'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' cache='none'/>
      <source file='/media/disk-1/cleankvm/raw/RHEL-3.9-32-virtio.raw'/>
      <target dev='vda' bus='virtio'/>
    </disk>
    <interface type='network'>
      <mac address='54:52:00:3f:2f:01'/>
      <source network='default'/>
      <model type='virtio'/>
      <target dev='vnet0'/> 
    </interface>
    <serial type='pty'>
      <source path='/dev/pts/12'/>
      <target port='0'/>
    </serial>
    <console type='pty' tty='/dev/pts/12'>
      <source path='/dev/pts/12'/>
      <target port='0'/>
    </console>
    <input type='mouse' bus='ps2'/>
    <graphics type='vnc' port='5900' autoport='yes' keymap='en-us'/>
  </devices>
</domain>