DreamCompute does not support nested virtualization - Sepia

20 Apr 2020

DreamHost has given us a "ceph" tenant in their OpenStack environment
(DreamCompute). After some stability problems, we moved almost all the
workloads to OVH's OpenStack instead a few years ago.

I have been using this tenant for some testing recently, and I found
that some of our old compute nodes were stuck in "Error" state. I
asked DreamHost support to delete these, and they deleted them today.

It sounds like we will hit this problem again if we try to use nested
virtualization on DreamCompute. This might have been a result of
running the ceph-ansible Vagrant tests there a long time ago.

On Mon, Apr 20, 2020 at 2:43 AM DreamHost Customer Support Team wrote:
...
  Okay! After much hard work by our DreamCompute
engineers (they had to
 completely evacuate each of the hypervisors those instances were on of
 all other instances so that they could be rebooted), those instances
 have been successfully deleted! They also asked me to pass along a
 request that you and your team not try to do nested virtualization on
 DreamCompute at this time as it currently leads to problems like this
 (where a complete hypervisor reboot is required). If you have any
 additional questions, please let us know. 
- Ken