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"VirtualMachine matching query does not exist." when trying to delete Virtual Machines #1911

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opened 2025-12-29 17:20:18 +01:00 by adam · 6 comments
adam commented 2025-12-29 17:20:18 +01:00
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Originally created by @pm17788 on GitHub (Aug 7, 2018).

Environment

  • Python version: 3.5.2
  • NetBox version: 2.4.1

Steps to Reproduce

  1. Using the filters in Virtual Machines, select all Virtual Machines with status "Offline" (in our case, that ends up being 1686 systems)
  2. Use the Select all 1686 virtual machines matching query checkbox
  3. Click Delete All button
  4. Wait for confirmation page to load
  5. Click Delete these 1686 virtual machines button

Expected Behavior

1686 selected Virtual Machines razed into oblivion

Observed Behavior

  1. After about 15 seconds, get back a Server Error page with the following text:
Server Error

There was a problem with your request. Please contact an administrator.

The complete exception is provided below:

<class 'virtualization.models.DoesNotExist'>

VirtualMachine matching query does not exist.

If further assistance is required, please post to the NetBox mailing list.
Originally created by @pm17788 on GitHub (Aug 7, 2018). ### Environment * Python version: 3.5.2 * NetBox version: 2.4.1 ### Steps to Reproduce 1. Using the filters in Virtual Machines, select all Virtual Machines with status "Offline" (in our case, that ends up being 1686 systems) 1. Use the `Select all 1686 virtual machines matching query` checkbox 1. Click `Delete All` button 1. Wait for confirmation page to load 1. Click `Delete these 1686 virtual machines` button ### Expected Behavior 1686 selected Virtual Machines razed into oblivion ### Observed Behavior 1. After about 15 seconds, get back a `Server Error` page with the following text: ``` Server Error There was a problem with your request. Please contact an administrator. The complete exception is provided below: <class 'virtualization.models.DoesNotExist'> VirtualMachine matching query does not exist. If further assistance is required, please post to the NetBox mailing list. ```
adam added the type: bugstatus: accepted labels 2025-12-29 17:20:18 +01:00
adam closed this issue 2025-12-29 17:20:18 +01:00
adam commented 2025-12-29 17:20:18 +01:00
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@jeremystretch commented on GitHub (Aug 7, 2018):

Just tried this with 2000 virtual machines and wasn't able to reproduce the error. All 2000 VMs were deleted. Can you try it with DEBUG=True set in configuration.py and post the stack trace?

@jeremystretch commented on GitHub (Aug 7, 2018): Just tried this with 2000 virtual machines and wasn't able to reproduce the error. All 2000 VMs were deleted. Can you try it with `DEBUG=True` set in configuration.py and post the stack trace?
adam commented 2025-12-29 17:20:18 +01:00
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@pm17788 commented on GitHub (Aug 7, 2018):

@jeremystretch: Will do. I just tried to delete a single VM, and got the same error.

Stack trace:



Request Method: | POST
-- | --
https://netbox.datto.net/virtualization/virtual-machines/119096/delete/
2.0.8
DoesNotExist
VirtualMachine matching query does not exist.
/usr/local/lib/python3.5/dist-packages/django/db/models/query.py in get, line 403
/usr/bin/python3
3.5.2
['/opt/netbox/netbox',  '/opt/netbox/netbox',  '/usr/local/bin',  '/usr/local/lib/python3.5/dist-packages/pip-9.0.1-py3.5.egg',  '/usr/lib/python35.zip',  '/usr/lib/python3.5',  '/usr/lib/python3.5/plat-x86_64-linux-gnu',  '/usr/lib/python3.5/lib-dynload',  '/usr/local/lib/python3.5/dist-packages',  '/usr/lib/python3/dist-packages']
Tue, 7 Aug 2018 20:34:25 +0000

Environment:


Request Method: POST
Request URL: https://netbox.datto.net/virtualization/virtual-machines/119096/delete/

Django Version: 2.0.8
Python Version: 3.5.2
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.humanize',
 'corsheaders',
 'debug_toolbar',
 'django_filters',
 'django_tables2',
 'mptt',
 'rest_framework',
 'taggit',
 'taggit_serializer',
 'timezone_field',
 'circuits',
 'dcim',
 'ipam',
 'extras',
 'secrets',
 'tenancy',
 'users',
 'utilities',
 'virtualization',
 'drf_yasg']
Installed Middleware:
('debug_toolbar.middleware.DebugToolbarMiddleware',
 'corsheaders.middleware.CorsMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'django.middleware.security.SecurityMiddleware',
 'utilities.middleware.ExceptionHandlingMiddleware',
 'utilities.middleware.LoginRequiredMiddleware',
 'utilities.middleware.APIVersionMiddleware',
 'extras.middleware.ObjectChangeMiddleware')



Traceback:

File "/usr/local/lib/python3.5/dist-packages/django/db/models/fields/related_descriptors.py" in __get__
  158.             rel_obj = self.field.get_cached_value(instance)

File "/usr/local/lib/python3.5/dist-packages/django/db/models/fields/mixins.py" in get_cached_value
  13.             return instance._state.fields_cache[cache_name]

During handling of the above exception ('virtual_machine'), another exception occurred:

File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/exception.py" in inner
  35.             response = get_response(request)

File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/base.py" in _get_response
  128.                 response = self.process_exception_by_middleware(e, request)

File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/base.py" in _get_response
  126.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/usr/local/lib/python3.5/dist-packages/django/views/generic/base.py" in view
  69.             return self.dispatch(request, *args, **kwargs)

File "/usr/local/lib/python3.5/dist-packages/django/contrib/auth/mixins.py" in dispatch
  85.         return super().dispatch(request, *args, **kwargs)

File "/usr/local/lib/python3.5/dist-packages/django/views/generic/base.py" in dispatch
  89.         return handler(request, *args, **kwargs)

File "/opt/netbox/netbox/utilities/views.py" in post
  280.                 obj.delete()

File "/usr/local/lib/python3.5/dist-packages/django/db/models/base.py" in delete
  891.         return collector.delete()

File "/usr/local/lib/python3.5/dist-packages/django/db/models/deletion.py" in delete
  307.                             sender=model, instance=obj, using=self.using

File "/usr/local/lib/python3.5/dist-packages/django/dispatch/dispatcher.py" in send
  178.             for receiver in self._live_receivers(sender)

File "/usr/local/lib/python3.5/dist-packages/django/dispatch/dispatcher.py" in <listcomp>
  178.             for receiver in self._live_receivers(sender)

File "/usr/local/lib/python3.5/dist-packages/django/utils/functional.py" in _curried
  11.         return _curried_func(*(args + moreargs), **dict(kwargs, **morekwargs))

File "/opt/netbox/netbox/extras/middleware.py" in _record_object_deleted
  37.         instance.log_change(request.user, request.id, OBJECTCHANGE_ACTION_DELETE)

File "/opt/netbox/netbox/dcim/models.py" in log_change
  1940.             related_object=self.get_component_parent(),

File "/opt/netbox/netbox/dcim/models.py" in get_component_parent
  1860.         return self.device or self.virtual_machine

File "/usr/local/lib/python3.5/dist-packages/django/db/models/fields/related_descriptors.py" in __get__
  164.                 rel_obj = self.get_object(instance)

File "/usr/local/lib/python3.5/dist-packages/django/db/models/fields/related_descriptors.py" in get_object
  139.         return qs.get(self.field.get_reverse_related_filter(instance))

File "/usr/local/lib/python3.5/dist-packages/django/db/models/query.py" in get
  403.                 self.model._meta.object_name

Exception Type: DoesNotExist at /virtualization/virtual-machines/119096/delete/
Exception Value: VirtualMachine matching query does not exist.
@pm17788 commented on GitHub (Aug 7, 2018): @jeremystretch: Will do. I just tried to delete a *single* VM, and got the same error. Stack trace: ``` Request Method: | POST -- | -- https://netbox.datto.net/virtualization/virtual-machines/119096/delete/ 2.0.8 DoesNotExist VirtualMachine matching query does not exist. /usr/local/lib/python3.5/dist-packages/django/db/models/query.py in get, line 403 /usr/bin/python3 3.5.2 ['/opt/netbox/netbox', '/opt/netbox/netbox', '/usr/local/bin', '/usr/local/lib/python3.5/dist-packages/pip-9.0.1-py3.5.egg', '/usr/lib/python35.zip', '/usr/lib/python3.5', '/usr/lib/python3.5/plat-x86_64-linux-gnu', '/usr/lib/python3.5/lib-dynload', '/usr/local/lib/python3.5/dist-packages', '/usr/lib/python3/dist-packages'] Tue, 7 Aug 2018 20:34:25 +0000 ``` ``` Environment: Request Method: POST Request URL: https://netbox.datto.net/virtualization/virtual-machines/119096/delete/ Django Version: 2.0.8 Python Version: 3.5.2 Installed Applications: ['django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'django.contrib.humanize', 'corsheaders', 'debug_toolbar', 'django_filters', 'django_tables2', 'mptt', 'rest_framework', 'taggit', 'taggit_serializer', 'timezone_field', 'circuits', 'dcim', 'ipam', 'extras', 'secrets', 'tenancy', 'users', 'utilities', 'virtualization', 'drf_yasg'] Installed Middleware: ('debug_toolbar.middleware.DebugToolbarMiddleware', 'corsheaders.middleware.CorsMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware', 'django.middleware.security.SecurityMiddleware', 'utilities.middleware.ExceptionHandlingMiddleware', 'utilities.middleware.LoginRequiredMiddleware', 'utilities.middleware.APIVersionMiddleware', 'extras.middleware.ObjectChangeMiddleware') Traceback: File "/usr/local/lib/python3.5/dist-packages/django/db/models/fields/related_descriptors.py" in __get__ 158. rel_obj = self.field.get_cached_value(instance) File "/usr/local/lib/python3.5/dist-packages/django/db/models/fields/mixins.py" in get_cached_value 13. return instance._state.fields_cache[cache_name] During handling of the above exception ('virtual_machine'), another exception occurred: File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/exception.py" in inner 35. response = get_response(request) File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/base.py" in _get_response 128. response = self.process_exception_by_middleware(e, request) File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/base.py" in _get_response 126. response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/usr/local/lib/python3.5/dist-packages/django/views/generic/base.py" in view 69. return self.dispatch(request, *args, **kwargs) File "/usr/local/lib/python3.5/dist-packages/django/contrib/auth/mixins.py" in dispatch 85. return super().dispatch(request, *args, **kwargs) File "/usr/local/lib/python3.5/dist-packages/django/views/generic/base.py" in dispatch 89. return handler(request, *args, **kwargs) File "/opt/netbox/netbox/utilities/views.py" in post 280. obj.delete() File "/usr/local/lib/python3.5/dist-packages/django/db/models/base.py" in delete 891. return collector.delete() File "/usr/local/lib/python3.5/dist-packages/django/db/models/deletion.py" in delete 307. sender=model, instance=obj, using=self.using File "/usr/local/lib/python3.5/dist-packages/django/dispatch/dispatcher.py" in send 178. for receiver in self._live_receivers(sender) File "/usr/local/lib/python3.5/dist-packages/django/dispatch/dispatcher.py" in <listcomp> 178. for receiver in self._live_receivers(sender) File "/usr/local/lib/python3.5/dist-packages/django/utils/functional.py" in _curried 11. return _curried_func(*(args + moreargs), **dict(kwargs, **morekwargs)) File "/opt/netbox/netbox/extras/middleware.py" in _record_object_deleted 37. instance.log_change(request.user, request.id, OBJECTCHANGE_ACTION_DELETE) File "/opt/netbox/netbox/dcim/models.py" in log_change 1940. related_object=self.get_component_parent(), File "/opt/netbox/netbox/dcim/models.py" in get_component_parent 1860. return self.device or self.virtual_machine File "/usr/local/lib/python3.5/dist-packages/django/db/models/fields/related_descriptors.py" in __get__ 164. rel_obj = self.get_object(instance) File "/usr/local/lib/python3.5/dist-packages/django/db/models/fields/related_descriptors.py" in get_object 139. return qs.get(self.field.get_reverse_related_filter(instance)) File "/usr/local/lib/python3.5/dist-packages/django/db/models/query.py" in get 403. self.model._meta.object_name Exception Type: DoesNotExist at /virtualization/virtual-machines/119096/delete/ Exception Value: VirtualMachine matching query does not exist. ```
adam commented 2025-12-29 17:20:19 +01:00
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@jeremystretch commented on GitHub (Aug 7, 2018):

Ok, the issue seems to stem from logging the deletion of the VM interfaces rather than the VMs themselves.

@jeremystretch commented on GitHub (Aug 7, 2018): Ok, the issue seems to stem from logging the deletion of the VM interfaces rather than the VMs themselves.
adam commented 2025-12-29 17:20:19 +01:00
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@jeremystretch commented on GitHub (Aug 7, 2018):

For some reason, the interfaces are being deleted after the VM gets deleted. As far as I can tell, only interfaces are affected: Other related objects (secrets, etc.) get deleted before the VM as they should. The exception is being raised when calling log_change() on a child interface tries to resolve its parent VM. The relationship is still there (i.e. virtual_machine_id still has a value) but the VM is gone.

@jeremystretch commented on GitHub (Aug 7, 2018): For some reason, the interfaces are being deleted _after_ the VM gets deleted. As far as I can tell, only interfaces are affected: Other related objects (secrets, etc.) get deleted _before_ the VM as they should. The exception is being raised when calling `log_change()` on a child interface tries to resolve its parent VM. The relationship is still there (i.e. `virtual_machine_id` still has a value) but the VM is gone.
adam commented 2025-12-29 17:20:19 +01:00
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@pm17788 commented on GitHub (Aug 7, 2018):

Well then. Hrmm... Is this something I could have caused? The system's provenance is 2.3.2 upgraded successively to 2.4.1.

@pm17788 commented on GitHub (Aug 7, 2018): Well then. Hrmm... Is this something I could have caused? The system's provenance is 2.3.2 upgraded successively to 2.4.1.
adam commented 2025-12-29 17:20:19 +01:00
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@jeremystretch commented on GitHub (Aug 7, 2018):

@pm17788 No, it's an anomaly in the way Django chooses to order the deletion of related objects. I have a fix coming in v2.4.2.

@jeremystretch commented on GitHub (Aug 7, 2018): @pm17788 No, it's an anomaly in the way Django chooses to order the deletion of related objects. I have a fix coming in v2.4.2.
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Reference: starred/netbox#1911
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