On Tue, Sep 03, 2013 at 09:51:52AM +0200, Gerd Hoffmann wrote: > On Mo, 2013-09-02 at 13:57 +0100, Daniel P. Berrange wrote: > > On Mon, Sep 02, 2013 at 05:38:42PM +0800, Guannan Ren wrote: > > > usb-bot only supports 16 luns(0~15) and they must be contiguous, > > > (using lun 0 and 2 without 1 doesn't work). In this case qemu > > > doesn't throw an error, we can not find the lun 2 in guests. So > > > Adding a checking function in libvirt to prevent from this case. > > > > Hmm, this seems like a problematic restriction. > > It's how the hardware works. > > > How does this work if we start off a guest with 3 disks > > attached to the usb-bot SCSI controller. Then hot-unplug > > the 2nd disk. > > You can't hotplug individual luns anyway. How does hotplug/unplug work in the context of usb-bot ? AFAIK we need to be able to run device_add usb_bot drive_add file... device_add scsi-hd And the reverse, to unplug it, if we're to have feature parity with usb-storage. Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :| -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list