[Libguestfs] virt-p2v VM testing bitrot?

[Richard W.M. Jones]

On Wed, Aug 24, 2022 at 04:12:04PM +0200, Laszlo Ersek wrote:
> I've started looking into RHBZ 1590721 for virt-p2v.
> 
> For p2v development, quick local testing is helpful. "make
> run-virt-p2v-directly" seems to be working great; however, the VM-based
> test methods seem to have developed problems, since I last looked.
> 
> Namely:
> 
> - "make run-virt-p2v-in-a-vm" boots quickly, but the GUI does not come up.
> 
> - "make run-virt-p2v-in-an-nvme-vm" boots *incredibly slowly*. I
> checked, and the host CPU utilization during guest boot was around 20%
> (and KVM was enabled). I don't understand how or why, but exposing the
> "physical machine" disk over NVMe slows guest boot to a crawl -- it
> looks strangely "IO-bound". I don't recall this from the time I added
> this Makefile target!
> 
> Do these symptoms look familiar?

Yes I had noticed this.  I did look at it briefly but couldn't work
out what was going wrong.

Rich.

> (For RHBZ 1590721, I think run-virt-p2v-directly will suffice; just
> wanted to record the above somewhere.)
> 
> Thanks
> Laszlo

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-p2v converts physical machines to virtual machines.  Boot with a
live CD or over the network (PXE) and turn machines into KVM guests.
http://libguestfs.org/virt-v2v