On Feb 14, 2019, at 18:23, rong zhao <zhaorbox at gmail.com> wrote: > > Hi Team, > I am not sure if I should put my question here, I have googled long > time, no explicit information found. > > Background: > We need to support KVM encryption and decided to use LUKS. > > Refer to:https://libvirt.org/formatsecret.html#VolumeUsageType > > libvirtd and KVM should be able to support LUKS format disk directly. > > Unfortunately, seems that we need to use libvirt2.2+ and qemu > 2.6+, because our current qemu-kvm version does not support luks > format: > > And our hypervisor's OS is CentOS 7.2 with libvirt 2.0 and qemu-kvm 1.5.3 > > Question: > Is there any safe way to upgrade to libvirt 2.2 and qemu 2.6? > Safe way means: do not need to reboot hyper or VM, do not > impact VM types support . > > Any suggestion is welcome. The libvirt package was update to v2.0 in 7.3. In the (only supported) latest release, it’s v4.5.0. Qemu remains at version 1.5.3. Nonetheless, you won’t be able to upgrade to newer versions without shutting down or migrating the VMs. — Jonathan Billings <billings at negate.org>