Avi Kivity wrote: > Anthony Liguori wrote: >> >> If you are using virtio drivers in the guest (which I presume you are >> given the reference to /dev/vda), try using the following -drive syntax: >> >> -drive file=/dev/mapper/ioband1,if=virtio,boot=on,cache=off >> >> This will force the use of O_DIRECT. By default, QEMU does not open >> with O_DIRECT so you'll see page cache effects. >> >> > > Good point. But IIRC cache=off is not limited to virtio? Nope. I just wanted to give the exact syntax to use and it looked like he was using virtio. Regards, Anthony Liguori _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
