I found another post (2009, on fedora-virt list), which is relevant: http://www.redhat.com/archives/fedora-virt/2009-December/msg00032.html > I have a CentOS 5.4 guest x86_64. > If I remember well (...) > hot add of scsi disk should > work if there is already a scsi disk into the guest (and if the guest > supports it). Well, in my system there is no scsi disk on the guest (the guest only sees the img on which it runs), and I don't know how I could get one there. :-/ - Jussi -- Jussi Hirvi * Green Spot Suvilahdenkatu 1 B 78 * 00500 Helsinki * Finland Tel. +358 9 493 981 * Mobile +358 40 771 2098 (only sms) jussi.hirvi at greenspot.fi * http://www.greenspot.fi