On Mon, Jul 10, 2017 at 12:42 PM, Gianluca Cecchi <gianluca.cecchi@gmail.com> wrote:Do you understand why my engine vm remains in "Booting from Hard Disk" screen from these logs?Thanks,GianlucaOne of possible causes of my engine unable to boot up could be this?In 4.1.2 I was already in 7.3 and with the same qemu-kvm-ev and libvirt versions of 4.1.3, if I compare the command line of the VM, it was:diff 4.1.2 4.1.3< 2017-07-04 16:42:19.418+0000: starting up libvirt version: 2.0.0, package: 10.el7_3.9 (CentOS BuildSystem <http://bugs.centos.org>, 2017-05-25-20:52:28, c1bm.rdu2.centos.org), qemu version: 2.6.0 (qemu-kvm-ev-2.6.0-28.el7.10.1), hostname: ovirt02.localdomain.local ---> 2017-07-09 23:09:13.894+0000: starting up libvirt version: 2.0.0, package: 10.el7_3.9 (CentOS BuildSystem <http://bugs.centos.org>, 2017-05-25-20:52:28, c1bm.rdu2.centos.org), qemu version: 2.6.0 (qemu-kvm-ev-2.6.0-28.el7.10.1), hostname: ovirt02.localdomain.local 5,6c5,6< -machine pc-i440fx-rhel7.2.0,accel=kvm,usb=off < -cpu qemu64,-svm -m 6144---> -machine pc-i440fx-rhel7.3.0,accel=kvm,usb=off > -cpu Broadwell,+rtm,+hle -m 61449c9< -smbios 'type=1,manufacturer=oVirt,product=oVirt Node,version=7-2.1511.el7. centos.2.10,serial=564D7100- F0D4-3ACC-795A-145A595604C0, uuid=87fd6bdb-535d-45b8-81d4- 7e3101a6c364' ---> -smbios 'type=1,manufacturer=oVirt,product=oVirt Node,version=7-3.1611.el7. centos,serial=564D8F16-993A- 33E1-3B2E-E1740F99C542,uuid= 87fd6bdb-535d-45b8-81d4- 7e3101a6c364' 13c13< -rtc base=2017-07-04T16:42:19,driftfix=slew ---> -rtc base=2017-07-09T23:09:13,driftfix=slew 21c21< -netdev tap,fd=31,id=hostnet0,vhost=on,vhostfd=33 ---> -netdev tap,fd=30,id=hostnet0,vhost=on,vhostfd=32 28a29,30> -chardev pty,id=charconsole0> -device virtconsole,chardev=charconsole0,id=console0 31c33,35< -incoming defer -msg timestamp=on---> -object rng-random,id=objrng0,filename=/dev/urandom > -device virtio-rng-pci,rng=objrng0,id=rng0,bus=pci.0,addr=0x6 > -msg timestamp=onSo it seems it changed both "machine" (from pc-i440fx-rhel7.2.0 to pc-i440fx-rhel7.3.0) and "cpu" (from qemu64,-svm to Broadwell,+rtm,+hle)Can I revert so that I can check if it has any influence?BTW: this is a nested environment, where the L0 host is ESX 6.0 U2.Thanks for any suggestin to fix engine startGianluca