Il 22/11/2012 15:19, Daniel P. Berrange ha scritto: >> What Paolo suggested is to add an entry in qemu.conf, just >> like "cgroup_device_acl": >> >> sgio_device_acl = [ "/dev/sda" ] >> >> When libvirtd starting, set the sysfs knob "unpriv_sgio" of >> the devices listed to 1, and 0 when libvirtd exists. >> >> I don't quite agree with this approach, as entries in qemu.conf >> generally should be configuration for the whole qemu driver, >> however, the SG_IO setting is at the device layer, or not >> higher than guest layer. > > This is fundamentally guest configuration IMHO,not system > configuration, so qemu.conf is the wrong place for it. We can make it 100% guest configuration. Let's add the same whitelist as the kernel to QEMU's scsi-block/scsi-generic as well. This way, libvirt will be able to start domains with different settings as long as QEMU supports the new property (let's call it scsi-block.privileged). I can add it to 1.4. Paolo -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list