Failed talking to pod: int() argument must be a string, a bytes-like object or a number, not 'NoneType'

[Björn Tillenius]

I got the above error when trying to add a virsh pod. This is the
traceback from rackd.log:

2017-05-11 12:53:12 provisioningserver.rpc.pods: [critical] Failed to discover p
od.

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 c
allWithContext
    return func(*args,**kw)
  File "/usr/lib/python3/dist-packages/provisioningserver/utils/twisted.py", lin
e 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'

[Björn Tillenius (bjornt)]

Looks like I have a VM with a non-existing storage path:

lilium:~> virsh domblklist --details ubuntu16.04
Type Device Target Source
------------------------------------------------
block disk vda /dev/ubuntu-vg/ubuntu16.04

lilium:~> virsh domblkinfo ubuntu16.04 /dev/ubuntu-vg/ubuntu16.04
error: cannot stat file '/dev/ubuntu-vg/ubuntu16.04': Bad file descriptor

I used to have /dev/ubuntu-vg, but it doesn't exist anymore and I didn't
delete the VM.

[Luca Cervigni (cervigni)]

I think this bug is again present in MAAS latest version

when adding a pod:
"int() argument must be a string, a bytes-like object or a number, not 'NoneType'"

rackd logs

2017-09-06 10:46:57 provisioningserver.rpc.pods: [critical] Failed to discover pod.

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 880, in discover
    conn = yield self.get_virsh_connection(context)
  File "/usr/lib/python3/dist-packages/twisted/internet/defer.py", line 1128, in _inlineCallbacks
    result = g.send(result)
  File "/usr/lib/python3/dist-packages/provisioningserver/drivers/pod/virsh.py", line 871, in get_virsh_connection
    raise VirshError('Failed to login to virsh console.')
provisioningserver.drivers.pod.virsh.VirshError: Failed to login to virsh console.

If running manually:
sudo -u maas virsh -c qemu+ssh://ubuntu@146.118.53.254/system list --all
 Id Name State
----------------------------------------------------

It works

[Luca Cervigni (cervigni)]

Nevermind, related to: https://bugs.launchpad.net/maas/+bug/1696122