In this section, we cover discussion of Fedora virtualization technologies on the @fedora-virt, @fedora-xen-list, @libguestfs, @libvirt-list, @virt-tools-list, and @ovirt-devel-list lists.
Contributing Writer: Dale Bewley
Fedora Virtualization List
This section contains the discussion happening on the fedora-virt list.
Distributing I/O Load Among Guests
Dennis J. asked "What is the best way to deal with I/O load when running several VMs on a physical machine with local or remote storage?" "What I'm primarily worried about is the case when several VMs cause disk I/O at the same time." "What is the best way to soften the impact of such a situation?"
Pasi Kärkkäinen suggested "If the IOS are not split evenly between VMs, you could use some tool like dm-ioband to make sure IOs are split fairly between VMs. Or then get faster disks. Single 15k rpm SAS disk will give you up to 350 IOPS, so it's 2-3x faster than 7200 rpm SATA."
Richard Jones concurred "For KVM, each VM isn't really any different from a host process, so you have to deal with them the same way that you'd deal with having lots of host processes doing I/O. So: lots of spindles, expensive I/O hardware, etc."
Virtualization Tools List
This section contains the discussion happening on the virt-tools-list list.
The very newest releases of virt packages are available (for testing purposes only) in the Virtualization Preview Repository before they become generally available.
New Release virt-manager 0.8.0
- New 'Clone VM' Wizard
- Improved UI, including an overhaul of the main 'manager' view
- System tray icon for easy VM access (start, stop, view console/details)
- Wizard for adding serial, parallel, and video devices to existing VMs.
- CPU pinning support (Michal Novotny)
- Ability to view and change VM security (sVirt) settings (Dan Walsh)
- Many bug fixes and improvements
New Release virtinst 0.500.0
virtinst is a module that helps build and install
libvirt based virtual machines. It currently supports
Xen virtual machines. Package includes several command line utilities, including
virt-install (build and install new VMs) and
virt-clone (clone an existing virtual machine).
- New virt-install device options --serial, --parallel, and --video
- Allow various auth types for libvirt connections (PolicyKit, SASL, ...)
- New virt-clone option --auto-clone: generates all needed input.
- Option to specify network device model via virt-install --network (Guido Gunther)
- New virt-install option --virt-type for specifying hypervisor type (kvm, qemu). --accelerate is now the default behavior: To provision a plain qemu VM on a KVM enabled host, use '--virt-type qemu'
- OVF input support for virt-convert
- Many bug fixes and improvements
New Release virt-viewer 0.2.0
- Switch UI over to use Glade
- Support graphical dialog for VNC and libvirt authentication
- Resize window to match VNC desktop size where possible
- Scale down VNC desktop if it cannot fit in host desktop space
- Allow user to resize window to arbitrary size, scaling VNC
- Fix blocking of accelerators
- Allow automatic reconnect to a VM via --reconnect
- Use libvirt events to detect when VM changes state
- Wait for VM to appear if it does not exist
- Fix plugin build with newer xulrunner
- Port & build for Mingw32 target
This section contains the discussion happening on the libvir-list.
oVirt Devel List
This section contains the discussion happening on the ovirt-devel list.