[CentOS] LVM hatred, was Re: /boot on a separate partition?

Fri Jun 26 11:34:26 UTC 2015
Leon Fauster <leonfauster at googlemail.com>

Am 26.06.2015 um 12:47 schrieb Steve Clark <sclark at 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