not working with virtio disks under qemu

[james-leu]

I have a VM with two virtio disks vda and vdb
The VM has historically mounted root from vda

I have installed the RPM
edited /etc/overlayroot.conf setting overlayrootdevice=/dev/vdb
dracut -f for each of the kernel versions installed
rebooted, and I never get login prompt on console.

Any assistance would be greatly appreciated

[james-leu]

the resulting initrds are strangely very sparse only containing microcode/AuthenticAMD.bin

[gfleury]

Are you using centos 7?

[james-leu]

Yes, an up to date centos7 VM I'm wondering if the dracut 'plugin' is failing and causing dracut to produce a minimal initramfs that only contains the microcode. I've done a strace of the dracut process before the plugin is installed and after. I still have yet to dig deeper into the traces to understand what is happening. If you have any thoughts or suggestions I would appreciate it, Jim