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Type: Bug
Resolution: Done-Errata
Priority: Major
Fix Version/s: rhos-18.0.6
Affects Version/s: rhos-18.0.0
Component/s: openstack-nova
Labels:
- Triaged
- ZStream

Story Points:
3
Blocked:
False
Ready:
False
Fixed in Build:
openstack-nova-27.5.2-18.0.20250218144742.el9ost
Regression:
None
Release Note Text:
Undefined
Errata Link:
https://errata.engineering.redhat.com/advisory/146621

Sprint:
Compute Epoxy Phase 2 Cont'd
sprint_count:
1
Severity:
Moderate

SFDC Cases Counter:
SFDC Cases Open:
SFDC Cases Links:

What problem/issue/behavior are you having trouble with? What do you expect to see?

Create flavor with swap - FLAVOR_SWAP
Create flavor without swap - FLAVOR_NO_SWAP
Create instance using the "FLAVOR_SWAP" flavor.
Start a resize operation with the new flavor "FLAVOR_NO_SWAP"
Instance will be migrated to the new compute.
Resize operation will fail after the migration to the new compute (before the actual resize).
VM will be placed in an ERROR state and shutdown.

Please see the following Nova Launchpad bug which seems to be same : https://bugs.launchpad.net/nova/+bug/1552777

Here are the relevant logs :

Output of "openstack server show":

fault

{u'message': u"Cannot access storage file '/var/lib/nova/instances/a3c1a8a3-7b54-4ebf-9660-935c87881c07/disk.swap' (as uid:107, gid:107): No such file or directory", u'code': 500, u'details': u' File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 202, in decorated_function\n return function(self, context, *args, **kwargs)\n File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 4486, in finish_resize\n self._revert_allocation(context, instance, migration)\n File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__\n self.force_reraise()\n File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise\n six.reraise(self.type_, self.value, self.tb)\n File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 4483, in finish_resize\n migration)\n File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 4502, in _finish_resize_helper\n disk_info, image_meta, bdms)\n File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 4453, in _finish_resize\n old_instance_type)\n File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__\n self.force_reraise()\n File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise\n six.reraise(self.type_, self.value, self.tb)\n File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 4448, in _finish_resize\n block_device_info, power_on)\n File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 8299, in finish_migration\n post_xml_callback=gen_confdrive)\n File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5604, in _create_domain_and_network\n destroy_disks_on_failure)\n File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__\n self.force_reraise()\n File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise\n six.reraise(self.type_, self.value, self.tb)\n File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5573, in _create_domain_and_network\n post_xml_callback=post_xml_callback)\n File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5508, in _create_domain\n guest.launch(pause=pause)\n File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 144, in launch\n self._encoded_xml, errors=\'ignore\')\n File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__\n self.force_reraise()\n File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise\n six.reraise(self.type_, self.value, self.tb)\n File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 139, in launch\n return self._domain.createWithFlags(flags)\n File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 186, in doit\n result = proxy_call(self._autowrap, f, *args, **kwargs)\n File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 144, in proxy_call\n rv = execute(f, *args, **kwargs)\n File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 125, in execute\n six.reraise(c, e, tb)\n File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 83, in tworker\n rv = meth(*args, **kwargs)\n File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1110, in createWithFlags\n if ret == -1: raise libvirtError (\'virDomainCreateWithFlags() failed\', dom=self)\n', u'created': u'2019-11-19T19:20:49Z'}

Looking on the new compute – I am seeing that the root disk was migrated but the swap disk wasn’t :

[root@tenlab1-compute013 a3c1a8a3-7b54-4ebf-9660-935c87881c07]# ls -alh
total 848M
drwxr-xr-x. 2 42436 root 73 Nov 19 19:20 .
drwxr-xr-x. 5 42436 42436 97 Nov 19 19:20 ..
~~rw-r~~r-. 1 42436 42436 0 Nov 19 19:20 console.log
~~rw-r~~r-. 1 42436 root 847M Nov 19 19:19 disk
~~rw-r~~r-. 1 42436 root 512K Nov 19 19:19 disk.config
~~rw-r~~r-. 1 42436 42436 245 Nov 19 19:20 disk.info

The disk.info file also seems to be still listing the swap disk :

[root@tenlab1-compute013 a3c1a8a3-7b54-4ebf-9660-935c87881c07]# cat disk.info

{"/var/lib/nova/instances/a3c1a8a3-7b54-4ebf-9660-935c87881c07/disk.swap": "qcow2", "/var/lib/nova/instances/a3c1a8a3-7b54-4ebf-9660-935c87881c07/disk.config": "raw", "/var/lib/nova/instances/a3c1a8a3-7b54-4ebf-9660-935c87881c07/disk": "qcow2"}

The instance itself is still showing the old flavor with the swap.
(overcloud) [stack@tenlab1-director ~]$ openstack server show a3c1a8a3-7b54-4ebf-9660-935c87881c07 | grep flavor

flavor

SBC_PIM (68a1ea4b-e5e8-4b5f-93c8-db37290c0f46)

ORIGINAL FLAVOR
(overcloud) [stack@tenlab1-director ~]$ openstack flavor show 68a1ea4b-e5e8-4b5f-93c8-db37290c0f46
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

Field

Value

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

OS-FLV-DISABLED:disabled	False
OS-FLV-EXT-DATA:ephemeral	0
access_project_ids	1e152c0f15be40dcbd421fe4a5d8d0fc
disk	21
id	68a1ea4b-e5e8-4b5f-93c8-db37290c0f46
name	SBC_PIM
os-flavor-access:is_public	False
properties	aggregate_instance_extra_specs:vIMS_SRIOV='true', hw:cpu_policy='dedicated', hw:cpu_thread_policy='prefer', hw:mem_page_size='1GB', hw:numa_cpus.0='1-7', hw:numa_cpus.1='0', hw:numa_mem.0='8192', hw:numa_mem.1='8192', hw:numa_mempolicy='strict', hw:numa_nodes='2'
ram	16384
rxtx_factor	1.0
swap	1024
vcpus	8

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

NEW FLAVOR :
(overcloud) [stack@tenlab1-director ~]$ openstack flavor show SBC_PIM_TEST
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

Field

Value

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

OS-FLV-DISABLED:disabled	False
OS-FLV-EXT-DATA:ephemeral	0
access_project_ids	1e152c0f15be40dcbd421fe4a5d8d0fc
disk	21
id	49d67215-c86a-4ae1-bc12-ff7f245b112a
name	SBC_PIM_TEST
os-flavor-access:is_public	False
properties	aggregate_instance_extra_specs:vIMS_SRIOV='true', hw:cpu_policy='dedicated', hw:cpu_thread_policy='prefer', hw:mem_page_size='1GB', hw:numa_cpus.0='1-7', hw:numa_cpus.1='0', hw:numa_mem.0='8192', hw:numa_mem.1='8192', hw:numa_mempolicy='strict', hw:numa_nodes='2'
ram	16384
rxtx_factor	1.0
swap
vcpus	8

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

external trackers

Launchpad 1552777

PnT-DevOps Jira DFGCOMPUTE-2772

Red Hat Customer Portal 02522727

Red Hat Issue Tracker OSP-1993

links to

RHBA-2025:146621 Release of components for RHOSO 18.0

Upstream Gerrit topic

(1 links to)