Fix proposed to branch: stable/newton
Review: https://review.openstack.org/416764
** Changed in: nova/newton
Status: New => In Progress
** Changed in: nova/newton
Assignee: (unassigned) => Matt Riedemann (mriedem)
** Changed in: nova
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1647316
Title:
scheduler report client sends allocations with value of zero,
violating min_unit
Status in OpenStack Compute (nova):
Fix Released
Status in OpenStack Compute (nova) newton series:
In Progress
Bug description:
When a VM boots using non-local disk, it tries to send an allocation of
'DISK_GB': 0. This violates the default min_unit of 1 and causes an error that
looks like this:
[req-858cbed4-c113-45e8-94e3-1d8ee64f9de0 488c2b05a66b441199f4c1dca7accd5b
3fa5b55ecc154427b636119f0920d252 - default default] Bad inventory
Traceback (most recent call last):
File
"/usr/lib/python2.7/site-packages/nova/api/openstack/placement/handlers/allocation.py",
line 253, in set_allocations
allocations.create_all()
File "/usr/lib/python2.7/site-packages/oslo_versionedobjects/base.py", line
226, in wrapper
return fn(self, *args, **kwargs)
File "/usr/lib/python2.7/site-packages/nova/objects/resource_provider.py",
line 1050, in create_all
self._set_allocations(self._context, self.objects)
File "/usr/lib/python2.7/site-packages/oslo_db/sqlalchemy/enginefacade.py",
line 894, in wrapper
return fn(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/nova/objects/resource_provider.py",
line 1011, in _set_allocations
before_gens = _check_capacity_exceeded(conn, allocs)
File "/usr/lib/python2.7/site-packages/nova/objects/resource_provider.py",
line 921, in _check_capacity_exceeded
resource_provider=rp_uuid)
InvalidAllocationConstraintsViolated: Unable to create allocation for
'DISK_GB' on resource provider 'f9398126-d0e8-4cf8-ae45-9103a88aa13d'. The
requested amount would violate inventory constraints.
The causing code is at
https://github.com/openstack/nova/blob/474c2ef28234dacc658e9a78762cac66ef7fe334/nova/scheduler/client/report.py#L105
The correct fix is probably that whenever the value of any resource
class is zero, don't send that resource class in the dict.
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