[Bug 1851383] Re: disk format hang during install of 19.10 in KVM virtual machine

[Tom Horsley]

Don't know what I managed to screw up in the previous experiment, but I
just tried again and I can install a working virtual machine by first
formatting the virtual disk, then telling the installer to use the
partition without reformatting. I used the system rescue CD iso and
gparted this time rather than gnome-disks, maybe it likes gparted
created partitions better.

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Title:
  disk format hang during install of 19.10 in KVM virtual machine

Status in ubiquity package in Ubuntu:
  New

Bug description:
  I'm trying to install a KVM virtual machine using the ubuntu 19.10
  live iso. It always gets as far as the step where it is going to
  format the blank disk (in this case a newly created qcow2 image with a
  20G size limit). I then see the virtual machine go to 100% cpu usage
  and the installer goes completely unresponsive.

  I've tried this on a centos 7 host and a fedora 31 host with the same
  result on both.

  I've tried telling it to let me customise the partitions and letting
  it automatically create partitions with the same result - 100% cpu
  loop and hung unresponsive interface (sometimes a black screen,
  sometimes the partition tool, but not responding).

  The specific iso file is ubuntu-19.10-desktop-amd64.iso. I've checked
  the checksums and verified the signature, so it doesn't seem to be
  corrupted.

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