*** This bug is a duplicate of bug 1884214 ***
https://bugs.launchpad.net/bugs/1884214
It has been fixed already on master
https://review.opendev.org/#/c/740409/ and backported to stable branches
https://review.opendev.org/#/q/topic:bug/1884214+(status:open+OR+status:merged)
Marking this as duplicate of bug 1884214.
** This bug has been marked a duplicate of bug 1884214
reserve disk usage for image cache fails on a fresh hypervisor
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https://bugs.launchpad.net/bugs/1893436
Title:
Error updating resources on new hypervisor with
reserve_disk_resource_for_image_cache enabled
Status in OpenStack Compute (nova):
New
Bug description:
Description
===========
It is impossible to launch instances on freshly deployed hypervisors
with the following configuration:
[workarounds]
reserve_disk_resource_for_image_cache = True
nova-compute logs shows failures to update resources caused by the
/var/lib/nova/instances/_base folder being missing.
A workaround is to:
* disable this option
* launch an instance
* enable the option again
I assume this is because _base is lazily created on the first instance
launch.
Steps to reproduce
==================
* Deploy a new Nova hypervisor with
[workarounds]/reserve_disk_resource_for_image_cache = True
* Start the nova-compute service
* Try launching instances on the hypervisor
Expected result
===============
I would except instances to launch successfully.
Actual result
=============
* Instances fail to launch on new hypervisors
* Error and stack trace is shown every minute in logs
Environment
===========
OpenStack Train / Kolla binary images using the following RPMs:
openstack-nova-compute-20.3.0-1.el8.noarch
openstack-nova-common-20.3.0-1.el8.noarch
python3-nova-20.3.0-1.el8.noarch
python3-novaclient-15.1.1-1.el8.noarch
Logs & Configs
==============
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager
[req-34bb1ad0-0ffb-4215-983c-487349a37f58 - - - - -] Error updating resources
for node node-foo.: FileNotFoundError: [Errno 2] No such file or directory:
'/var/lib/nova/instances/_base'
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager Traceback (most recent
call last):
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager File
"/usr/lib/python3.6/site-packages/nova/compute/manager.py", line 8740, in
_update_available_resource_for_node
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager startup=startup)
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager File
"/usr/lib/python3.6/site-packages/nova/compute/resource_tracker.py", line 887,
in update_available_resource
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager
self._update_available_resource(context, resources, startup=startup)
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager File
"/usr/lib/python3.6/site-packages/oslo_concurrency/lockutils.py", line 328, in
inner
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager return f(*args,
**kwargs)
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager File
"/usr/lib/python3.6/site-packages/nova/compute/resource_tracker.py", line 972,
in _update_available_resource
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager
self._update(context, cn, startup=startup)
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager File
"/usr/lib/python3.6/site-packages/nova/compute/resource_tracker.py", line 1237,
in _update
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager
self._update_to_placement(context, compute_node, startup)
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager File
"/usr/lib/python3.6/site-packages/retrying.py", line 68, in wrapped_f
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager return
Retrying(*dargs, **dkw).call(f, *args, **kw)
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager File
"/usr/lib/python3.6/site-packages/retrying.py", line 223, in call
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager return
attempt.get(self._wrap_exception)
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager File
"/usr/lib/python3.6/site-packages/retrying.py", line 261, in get
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager
six.reraise(self.value[0], self.value[1], self.value[2])
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager File
"/usr/lib/python3.6/site-packages/six.py", line 703, in reraise
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager raise value
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager File
"/usr/lib/python3.6/site-packages/retrying.py", line 217, in call
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager attempt =
Attempt(fn(*args, **kwargs), attempt_number, False)
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager File
"/usr/lib/python3.6/site-packages/nova/compute/resource_tracker.py", line 1157,
in _update_to_placement
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager
self.driver.update_provider_tree(prov_tree, nodename)
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager File
"/usr/lib/python3.6/site-packages/nova/virt/libvirt/driver.py", line 7305, in
update_provider_tree
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager
self._get_disk_size_reserved_for_image_cache()),
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager File
"/usr/lib/python3.6/site-packages/nova/virt/libvirt/driver.py", line 9672, in
_get_disk_size_reserved_for_image_cache
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager
self.image_cache_manager.get_disk_usage() / 1024.0 / 1024.0)
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager File
"/usr/lib/python3.6/site-packages/nova/virt/libvirt/imagecache.py", line 358,
in get_disk_usage
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager if not
self.cache_dir_is_on_same_dev_as_instances_dir:
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager File
"/usr/lib/python3.6/site-packages/nova/virt/libvirt/imagecache.py", line 380,
in cache_dir_is_on_same_dev_as_instances_dir
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager
os.stat(self.cache_dir).st_dev)
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager FileNotFoundError:
[Errno 2] No such file or directory: '/var/lib/nova/instances/_base'
2020-08-28 14:58:39.649 6 ERROR nova.compute.manager
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