[libvirt] cache=none

[Stefan]

Hello,

* Is it possible to add the "kvm -drive"-option "cache=none" to libvirtd.conf ?
  It's a recommendation of XFS FAQ:
http://xfs.org/index.php/XFS_FAQ#Q:_Which_settings_are_best_with_virtualization_like_VMware.2C_XEN.2C_qemu.3F

* Is there a generic way to handle kvm options that are not supported in libvirtd.conf ?

* Is it generally a bad idea to use XFS with KVM ?

Thanks

Stefan