> something along > > echo - - - > /sys/class/scsi_host/hostX/scan // yes, the "-" > must be there ! Unfortunately there is nothing under scsi: [root at localhost ~]# ll /sys/class/scsi_* /sys/class/scsi_device: total 0 /sys/class/scsi_disk: total 0 /sys/class/scsi_host: total 0 I also tried kudzu (http://linux.die.net/man/8/kudzu), but it still shows only the original drive: [root at localhost ~]# kudzu [root at localhost ~]# kudzu -p ... - class: HD bus: VIRTIO detached: 0 device: vda driver: virtio_blk desc: "Virtio Block Device" - ... While looking around I found this comment (in a bug not directly related): Yaniv Kaul 2009-05-19 06:53:14 EDT Hot-add is not supported for RHEV 2.1. https://bugzilla.redhat.com/show_bug.cgi?id=501468#c1 So maybe it actually cannot work?