On Sun, Aug 5, 2018 at 1:40 PM Paul.LKW <paul.lkw@gmail.com> wrote:

Dear All:
I just upgraded my oVIrt-4.2.4 to 4.2.5 and nightmare begin, FreeBSD VMs
hangs once the VM's VirtIO harddisk is some loading (eg. extracting a
big tar ball, portsnap extract, etc.), I tried to create a VMs using
back the IDE do not has any problem but got slow IO performance once
using VirtIO it will hang as it like.
I also tried to create another VMs with VirtIO-SCSI it seems the hang
problem no occur but I got the oVirt-Host loading over 40 when VM
harddisk have some little job, so conclusion is if you guys will using
FreeBSD as guest please do not upgrade at the moment.
In fact I feel every time the new version always have problem and
causing user to nightmare.

I don't think ovirt is the root cause, it may be some lower level component that was

upgraded at the same time, or something in the guest.

Does this happen only with ovirt 4.2.5 node and engine, or upgrading engine is enough?

Are you running same version of libvirt, qemu, and kernel as in 4.2.4?

Are you running same version of FreeBSD?

Can you reproduce the same issue only with qemu? virsh? virt-manager?

Nir