Add a disk/volume to VM Instance failing in 4.21

[bradh352]

I'm attempting to add a data disk to a VM instance and I'm getting an error of "Failed to attach volume testvolume to VM mirror1; org.libvirt.LibvirtException: Domain not found: no domain with matching name 'i-14-175-VM'":

This is my first time attempting to attach a second disk to an instance, so I'm not sure if I'm doing something wrong. I've tried creating a volume first then attaching it. I've tried using terraform. All result in the same error message.

I should note the VM Instance is part of a project, I haven't tried on an instance not associated with a project, not sure if it matters.

[prashanthr2]

@bradh352 Can you send the output of the below command from the KVM host where the VM is running (as per cloudstack).
virsh list --all

Also, can you try with any other VM as a test and see if still see the issue?

[bradh352]

looks like my cluster in general was in a bad state or something. I had similar results trying to live migrate. I took the sledge hammer approach and rebooted all my nodes and its working again ... hrm. Guess I need to do a better job understanding the issue next time it happens.