I find that you should modprobe 'acpiphp' & 'pci_hotplug' modules in the VM(ubuntu only has 'acpiphp', but it doesn't matter), then this problem will be resolved. http://www.linux-kvm.org/page/Hotadd_pci_devices
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/897750 Title: libvirt/kvm problem with disk attach/detach/reattach on running virt To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/897750/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs