I've configured MAAS in a lxd container on my laptop. When adding a virsh pod (with connection string "qemu+ssh://daniel@192.168.122.1/system"; the maas user has an authorized key in that user), I see the below traceback. I was able to workaround this issue by removing all the VMs that were displayed in virt-manager.
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 434, in errback
self._startRunCallbacks(fail)
File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 501, in _startRunCallbacks
self._runCallbacks()
File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 588, in _runCallbacks
current.result = callback(current.result, *args, **kw)
File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1184, in gotResult
_inlineCallbacks(r, g, deferred)
--- <exception caught here> ---
File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1126, in _inlineCallbacks
result = result.throwExceptionIntoGenerator(g)
File "/usr/lib/python3/dist-packages/twisted/python/failure.py", line 389, in throwExceptionIntoGenerator
return g.throw(self.type, self.value, self.tb)
File "/usr/lib/python3/dist-packages/provisioningserver/drivers/pod/virsh.py", line 865, in discover
conn.get_discovered_machine, vm)
File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 246, in inContext
result = inContext.theWork()
File "/usr/lib/python3/dist-packages/twisted/python/threadpool.py", line 262, in <lambda>
inContext.theWork = lambda: context.call(ctx, func, *args, **kw)
File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 118, in callWithContext
return self.currentContext().callWithContext(ctx, func, *args, **kw)
File "/usr/lib/python3/dist-packages/twisted/python/context.py", line 81, in callWithContext
return func(*args,**kw)
File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", line 232, in wrapper
result = func(*args, **kwargs)
File "/usr/lib/python3/dist-packages/provisioningserver/drivers/pod/virsh.py", line 493, in get_discovered_machine
size=self.get_machine_local_storage(machine, device),
File "/usr/lib/python3/dist-packages/provisioningserver/drivers/pod/virsh.py", line 405, in get_machine_local_storage
return int(self.get_key_value(output, "Capacity"))
builtins.TypeError: int() argument must be a string, a bytes-like object or a number, not 'NoneType'
