Windows 7 Qcow2 Top ›

virsh snapshot-list win7

This synchronizes with QEMU’s cache='writeback' for a significant performance boost. windows 7 qcow2 top

Replace the default e1000 with virtio-net: Edit the VM XML: &lt

<interface type='bridge'>
  <mac address='52:54:00:xx:xx:xx'/>
  <source bridge='br0'/>
  <model type='virtio'/>
  <driver name='vhost' queues='4'/>
</interface>

Lazy refcounts delay metadata updates, drastically improving write performance on HDDs and SSDs: driver name='qemu' type='qcow2' cache='writeback'/&gt

qemu-img amend -f qcow2 -o lazy_refcounts=on win7-overlay.qcow2

Edit the VM XML:

<driver name='qemu' type='qcow2' cache='writeback'/>

Warning for Windows 7: Do not use writethrough or none. Windows 7’s cache management is poor with these.