Re: [Libguestfs] Image Mounting Issue

On Sat, Oct 01, 2022 at 02:07:30AM +0000, Bryce Zimmer wrote: qemu-system-x86_64: error: failed to set MSR 0x48f to 0x7fffff00036dfb qemu-system-x86_64: /build/qemu-aXkhnW/qemu-4.2/target/i386/kvm.c:2691: kvm_buf_set_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed. It's a bug in qemu. I'm not sure exactly which qemu bug but if you search for "error: failed to set MSR 0x48f" you'll find a few references which seem to be related to nested virt: https://bugs.launchpad.net/qemu/+bug/1879646 https://communities.vmware.com/t5/ESXi-Discussions/ESXI-QEMU-Nested-Virtu... You can work around it (although it'll be slow) using: https://libguestfs.org/guestfs.3.html#force_tcg Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://people.redhat.com/~rjones/virt-top