Am 26.06.2015 um 12:47 schrieb Steve Clark sclark@netwolves.com:
On 06/25/2015 06:44 PM, Chris Murphy wrote:
Gordon Messmer gordon.messmer at gmail.com Wed Jun 24 01:42:13 UTC 2015
I wondered the same thing, especially in the context of someone who prefers virtual machines. LV-backed VMs have *dramatically* better disk performance than file-backed VMs.
I did a bunch of testing of Raw, qcow2, and LV backed VM storage circa Fedora 19/20 and found very little difference. What mattered most was the (libvirt) cache setting, accessible by virsh edit the xml config or virt-manager through the GUI. There have been a lot of
Which setting did you find most effective?
Keep in mind - write caching can improve perf but also increases data loss on abnormal VM shutdowns
-- LF