virt-v2v which specified the -f parameter failed.

Issue

• The virt-v2v command which specified /etc/virt-v2v.conf file by -f parameter, the file has network device information for a destination host, fails with  the following messages:

  virt-v2v: No capability in config matches os='linux' name='virtio' distro='rhel' major='5' minor='5'
  virt-v2v: No capability in config matches os='linux' name='cirrus' distro='rhel' major='5' minor='5'
  virt-v2v: WARNING: Display driver was updated to cirrus, but unable to install cirrus driver. X may not function correctly umount: umount: /transfer0w34SV: umount:
  /sysroot/transfer0w34SV: not mounted at /usr/share/perl5/vendor_perl/Sys/VirtConvert/GuestfsHandle.pm line 193. at /usr/share/perl5/vendor_perl/Sys/VirtConvert/Config.pm line 262