On Wed, Apr 11, 2018 at 14:12:39 +0300, Nikolay Shirokovskiy wrote: > Hi, all. > > I want to add option to configure qcow2 cache size in domain xml. Looks like > this should be a driver option. As driver already has a lot of attributes and > even qcow2 has more then one cache I suggest something like this: > > <driver type="qemu" type="qcow2"> > <cache name="l2" size="1024" unit="KiB"/> > <cache name="refcount" size="256" unit="KiB"/> > </driver>
Last time the discussion ended on the fact that this isn't something a normal user or a higher level management app would know how to setup properly. The sizes are usually too arcane to configure for users and even worse if you want to expose it as a higher level setting. This was the last attempt: https://www.redhat.com/archives/libvir-list/2017-September/msg00553.html
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