Summary
Trying to setup multi-node[1 controller, 2 computes] microstack cluster on ubuntu 20.04. All 3 nodes are KVM VMs and nested virtualization is enabled.
Process
Setup multinode cluster as mentioned on https://microstack.run/docs/multi-node BUT change the controller initialization command to sudo microstack init --auto --control --setup-loop-based-cinder-lvm-backend --loop-device-file-size 25
Attach both compute nodes. Verified openstack instances are getting created successfully on both computes.
Create a VM instance with volume size 5GB or create a volume directly from cirros OS using microstack.openstack volume create --image <cirros-image-uuid> --size 2 bootable_volume
Current and expected result
Getting below pasted error:
Mar 27 21:29:40 controller microstack.cinder-volume[11294]: 2022-03-27 21:29:40.194 11294 ERROR oslo_messaging.rpc.server File "/snap/microstack/245/lib/python3.8/site-packages/oslo_concurrency/processutils.py", line 428, in execute
Mar 27 21:29:40 controller microstack.cinder-volume[11294]: 2022-03-27 21:29:40.194 11294 ERROR oslo_messaging.rpc.server raise ProcessExecutionError(exit_code=_returncode,
Mar 27 21:29:40 controller microstack.cinder-volume[11294]: 2022-03-27 21:29:40.194 11294 ERROR oslo_messaging.rpc.server oslo_concurrency.processutils.ProcessExecutionError: Unexpected error while running command.
Mar 27 21:29:40 controller microstack.cinder-volume[11294]: 2022-03-27 21:29:40.194 11294 ERROR oslo_messaging.rpc.server Command: qemu-img convert -O raw -t none -f qcow2 /var/snap/microstack/common/lib/conversion/tmpmkx5ltc0controller@lvm-loop-based-backend /dev/mapper/cinder--volumes-volume--ab066631--8b9f--4787--831d--d65d61101d58
Mar 27 21:29:40 controller microstack.cinder-volume[11294]: 2022-03-27 21:29:40.194 11294 ERROR oslo_messaging.rpc.server Exit code: 1
Mar 27 21:29:40 controller microstack.cinder-volume[11294]: 2022-03-27 21:29:40.194 11294 ERROR oslo_messaging.rpc.server Stdout: ''
Mar 27 21:29:40 controller microstack.cinder-volume[11294]: 2022-03-27 21:29:40.194 11294 ERROR oslo_messaging.rpc.server Stderr: "qemu-img: Could not open '/dev/mapper/cinder--volumes-volume--ab066631--8b9f--4787--831d--d65d61101d58': Failed to lock byte 100\n"
Mar 27 21:29:40 controller microstack.cinder-volume[11294]: 2022-03-27 21:29:40.194 11294 ERROR oslo_messaging.rpc.server
Mar 27 21:29:40 controller microstack.cinder-volume[11294]: 2022-03-27 21:29:40.194 11294 ERROR oslo_messaging.rpc.server During handling of the above exception, another exception occurred:
Mar 27 21:29:40 controller microstack.cinder-volume[11294]: 2022-03-27 21:29:40.194 11294 ERROR oslo_messaging.rpc.server
Mar 27 21:29:40 controller microstack.cinder-volume[11294]: 2022-03-27 21:29:40.194 11294 ERROR oslo_messaging.r
