On 11-12-15 12:27 PM, Daniel P. Berrange wrote: > On Thu, Dec 15, 2011 at 07:16:22PM +0200, Sasha Levin wrote: >> On Thu, 2011-12-15 at 11:55 -0500, Brian J. Murrell wrote: >>> So, about 2/3 of host speed now -- which is much better. Is 2/3 about >>> normal or should I be looking for more? >> >> aio=native >> >> Thats the qemu setting, I'm not sure where libvirt hides that. > > <disk ...> > <driver io='threads|native'/> > ... > </disk> When I try to "virsh edit" and add that "<driver io=.../>" it seems to get stripped out of the config (as observed with "virsh dumpxml"). Doing some googling I discovered an alternate syntax (in message https://www.redhat.com/archives/libvirt-users/2011-June/msg00004.html): <driver name='qemu' type='raw' cache='none' io='native'/> But the "io='native'" seems to get stripped out of that too. FWIW, I have: qemu-kvm-0.12.1.2-2.113.el6.x86_64 libvirt-client-0.8.1-27.el6.x86_64 installed here on CentOS 6.0. Maybe this aio= is not supported in the above package(s)? Cheers, b.
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