On Mon, Sep 26, 2016 at 12:15:42 +0300, Nikolay Shirokovskiy wrote: > On 26.09.2016 12:01, Peter Krempa wrote: [...] > Sorry, I forget to write down the motivation. > > Internally qemu uses 3 orthogonal flags to configure disk cache. They > are exposed in interface too quite long time ago (29c4e2b). All-in-one > cache parameter that libvirt uses now do not provide all possible > values (5 vs 8). For example absent combination of direct + no flush (no sync) > is useful to speed up tests. Well, if there are useful combinations we can add them to the existing cache setting. > So I decided to provide new possibilities just as qemu does - keep > old parameter and use new ones to tune over. I don't think this is a good idea at all. It's very qemu specific and can be mapped to existing elements. Peter
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