Comment 12 for bug 568445

@Anthony,

I'm aware that I can manipulate the cache settings via libvirt's XML. That's currently what I've been doing, manually after every VM creation. However, my point is that qemu clearly recommends that caching not be used with disks stored on raw volumes. Additionally, virt-manager does not provide any means of disabling caching during or after VM creation. I disagree with your assertion regarding cached IO being faster with KVM. All of my tests indicate a multiple fold increase in performance with caching disabled.

I fail to see how caching provides and more data integrity than no caching. Unless I'm mistaken, no caching provides more integrity by definition. Now, if no caching also provides a mutli-fold performance increase (which it does, as qemu's pages even indicate) why so much resistance to making it the default?