Translations:ReleaseNotes/Liberty/33/zh-tw

• Moved to using os-brick library for Libvirt volume drivers allowing sharing of logic for volume discovery and removal between Nova and Cinder (http://specs.openstack.org/openstack/nova-specs/specs/liberty/implemented/use-os-brick-library.html).
• Added live_migration_completion_timeout and live_migration_progress_timeout configuration keys to assist with capping the maximum time a live migration should be allowed to run, particularly when progress has halted (https://launchpad.net/bugs/1429220).
• Added logic to manage and scale the maximum downtime setting during live migration to provide larger guest sizes with a better chance of completing migration successfully (https://launchpad.net/bugs/1429220).
• Limit parallel live migrations in progress (https://launchpad.net/bugs/1478108).
• Optionally enable the scaling of VirtIO queues in relation to guest vCPUs if the hw_vif_multiqueue_enabled image property is set to 'true' (default: 'false') providing enhanced network performance for guests with more than one vCPU, many concurrent connections, and/or relatively large packet sizes (http://specs.openstack.org/openstack/nova-specs/specs/liberty/implemented/libvirt-virtiomq.html).
• Allow admin to set guest Administrator/root password if QEMU guest agent is installed and enabled via the hw_qemu_guest_agent image property (http://specs.openstack.org/openstack/nova-specs/specs/liberty/approved/libvirt-set-admin-password.html).
• New VIF type to allow routing VM data instead of bridging it (https://blueprints.launchpad.net/nova/+spec/vif-type-tap)
• Add support for InfiniBand SR-IOV for libvirt virtualization (https://blueprints.launchpad.net/nova/+spec/vif-driver-ib-passthrough)
• Add MacVTap as new virtual interface type for libvirt virtualization (https://blueprints.launchpad.net/nova/+spec/libvirt-macvtap-vif)
• Consolidate FS-style libvirt drivers (https://blueprints.launchpad.net/nova/+spec/consolidate-libvirt-fs-volume-drivers)
• EMC ScaleIO Data Client (SDC) Libvirt Volume Driver (https://blueprints.launchpad.net/nova/+spec/emc-sdc-libvirt-volume-driver)
• Implementation of remote FS driver based on `rsync` for libvirt (https://blueprints.launchpad.net/nova/+spec/remote-fs-driver)
• Virtuozzo containers boot from volume (https://blueprints.launchpad.net/nova/+spec/virtuozzo-container-boot-from-volume)
• Add HGST volume type support w/os-brick (https://blueprints.launchpad.net/nova/+spec/add-os-brick-volume-driver-hgst-solutions)
• virtio-net multiqueue (partial) (https://blueprints.launchpad.net/nova/+spec/libvirt-virtio-net-multiqueue)