On Wed, Mar 31, 2021 at 10:50:24AM +0100, Daniel P. Berrangé wrote: > By default QEMU doesn't report any rotation information to guests, so > guests assume rotational media. This lets the user specify an explicit > speed in RPM, or 1 for SSD. This may allow the user to achieve better > performance for their virtual disks. Note, however, this doesn't mean > that the guest should be given the same setting as the host storage. > It is possible that better performance may be achieved with contrary > settings from the host. Testing is required to determine this on a > case by case basis. Oh, cool that we're finally able to introspect the device capability :). Please link the following BZ in your commits before pushing: https://bugzilla.redhat.com/show_bug.cgi?id=1498955 Regards, Erik