Its not the bug as I see once yoy have openstack environment working
properly then you can create a vm attach a volume but when you are
deleting a vm you must detach volume then delete the vm .
As you delete vm root volume willbe deleted according to functionality
but the volume attached will not be dtached as you had not detached it.
You have to manually detach it by the voulmes tab by going to that
volume.
** Changed in: nova
Assignee: (unassigned) => AMRITANSHU (amritgeo)
** Changed in: nova
Status: New => Opinion
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https://bugs.launchpad.net/bugs/1476591
Title:
volume in_use after VM has terminated
Status in Cinder:
New
Status in OpenStack Compute (nova):
Opinion
Bug description:
Running the Tempest test
tempest.scenario.test_volume_boot_pattern.TestVolumeBootPatternV2.test_volume_boot_pattern
with our CI system runs into a timing issue in the interaction between
Nova and Cinder.
Essentially on the Cinder side the volume status of the volume used
in the test is 'in_use' for several seconds _after_ the tests VM has
already been terminated and cleaned up, including the umounting of the
given volume on the Nova side. As Cinder sees the volume is still
'in_use' it calls the Nova API to perform the snapshot deletion but
since the volume has already been umounted on the Nova side the
resulting qemu-img operation triggered by Nova runs into a 'no such
file or directory' error.
The following log excerpts show this issue. Please refer to the given
time stamps (all components run in a devstack in the same machine so
times should be comparable):
1) Cinder log (please note i added two debug lines printing the volume status
data in this snippet that are not part of the upstream driver):
2015-07-21 08:14:10.163 DEBUG cinder.volume.drivers.remotefs
[req-6dae7608-e1f4-43af-ac8e-22d6aa7d72c9
tempest-TestVolumeBootPatternV2-966547300] Deleting snapshot
ca09f072-c736-41ac-b6f3-7a137b0ee072: _delete_s
napshot /opt/stack/cinder/cinder/volume/drivers/remotefs.py:915
2015-07-21 08:14:10.164 DEBUG cinder.volume.drivers.remotefs
[req-6dae7608-e1f4-43af-ac8e-22d6aa7d72c9
tempest-TestVolumeBootPatternV2-966547300] Initial snapshot deletion volume
status is in-use _delete_snapsho
t /opt/stack/cinder/cinder/volume/drivers/remotefs.py:918
2015-07-21 08:14:10.420 DEBUG cinder.volume.drivers.remotefs
[req-6dae7608-e1f4-43af-ac8e-22d6aa7d72c9
tempest-TestVolumeBootPatternV2-966547300] snapshot_file for this snap is:
volume-7f4a5711-9f2c-4aa7-a6af-c6
ccf476702d.ca09f072-c736-41ac-b6f3-7a137b0ee072 _delete_snapshot
/opt/stack/cinder/cinder/volume/drivers/remotefs.py:941
2015-07-21 08:14:10.420 DEBUG oslo_concurrency.processutils
[req-6dae7608-e1f4-43af-ac8e-22d6aa7d72c9
tempest-TestVolumeBootPatternV2-966547300] Running cmd (subprocess): sudo
cinder-rootwrap /etc/cinder/rootwra
p.conf env LC_ALL=C qemu-img info
/opt/stack/data/cinder/mnt/38effaab97f9ee27ecb78121f511fa07/volume-7f4a5711-9f2c-4aa7-a6af-c6ccf476702d.ca09f072-c736-41ac-b6f3-7a137b0ee072
execute /usr/local/lib/python2.7/dis
t-packages/oslo_concurrency/processutils.py:230
2015-07-21 08:14:11.549 DEBUG oslo_concurrency.processutils
[req-6dae7608-e1f4-43af-ac8e-22d6aa7d72c9
tempest-TestVolumeBootPatternV2-966547300] CMD "sudo cinder-rootwrap
/etc/cinder/rootwrap.conf env LC_ALL=C q
emu-img info
/opt/stack/data/cinder/mnt/38effaab97f9ee27ecb78121f511fa07/volume-7f4a5711-9f2c-4aa7-a6af-c6ccf476702d.ca09f072-c736-41ac-b6f3-7a137b0ee072"
returned: 0 in 1.129s execute /usr/local/lib/python2.7/d
ist-packages/oslo_concurrency/processutils.py:260
2015-07-21 08:14:11.700 DEBUG cinder.volume.drivers.remotefs
[req-6dae7608-e1f4-43af-ac8e-22d6aa7d72c9
tempest-TestVolumeBootPatternV2-966547300] In delete_snapshot, volume status is
in-use _delete_snapshot /opt
/stack/cinder/cinder/volume/drivers/remotefs.py:956
2) Nova log:
2015-07-21 08:14:05.153 INFO nova.compute.manager
[req-e9bea12a-88ef-4f08-a320-d6e8e3b21228
tempest-TestVolumeBootPatternV2-1465284168
tempest-TestVolumeBootPatternV2-966547300] [instance: adbe1fa4-7136-4d29-91d
0-5772dbf4900d] Terminating instance
2015-07-21 08:14:05.167 6183 INFO nova.virt.libvirt.driver [-] [instance:
adbe1fa4-7136-4d29-91d0-5772dbf4900d] Instance destroyed successfully.
2015-07-21 08:14:05.167 DEBUG nova.virt.libvirt.vif
[req-e9bea12a-88ef-4f08-a320-d6e8e3b21228
tempest-TestVolumeBootPatternV2-1465284168
tempest-TestVolumeBootPatternV2-966547300] vif_type=bridge instance=Instan
ce(access_ip_v4=None,access_ip_v6=None,architecture=None,auto_disk_config=False,availability_zone=None,cell_name=None,cleaned=False,config_drive='True',created_at=2015-07-21T08:13:32Z,default_ephemeral_device=No
ne,default_swap_device=None,deleted=False,deleted_at=None,disable_terminate=False,display_description='tempest-TestVolumeBootPatternV2-147549174',display_name='tempest-TestVolumeBootPatternV2-147549174',ec2_ids=
<?>,ephemeral_gb=0,ephemeral_key_uuid=None,fault=<?>,flavor=Flavor(6),host='manualvm',hostname='tempest-testvolumebootpatternv2-147549174',id=140,image_ref='',info_cache=InstanceInfoCache,instance_type_id=6,kernel_id='f203cd87-b5ed-491a-b7a5-46ad2e63bcbf',key_data='ssh-rsa
AAAAB3NzaC1yc2EAAAADAQABAAABAQDJ2yTWvjXK/IwK8xlmSjTn4drDwH5nMr65gYD4j3mkZBfBuk5Zuf10mLwVUFVDTgacJVcG4AE96poXofHD64pbGEcP9NqYGbLV7JSJzgNznUO/RkMdBBmmmfJiACvtWYpigAMIPPddgmpQZVaG+q8VelEWfDiErOBiaajz/NjL8/mmP78Lq0xvuP44vy/EElaSob8iiqFeg6rTlMpzhkFUV1a52CSQYjmD80mSf932ljXgNU9A4pE8NkO4lDOkflQfLO2F6wxV9H94VKxTBJgwnH8BANP7V8rjeIOwwUmpF1F6D4LceA66j1ONHk4ssyU3iimWt+UMwGCFWF6aa58n
Generated-by-Nova',key_name='tempest-TestVolumeBootPatternV2-787092881',launch_index=0,launched_at=2015-07-21T08:13:42Z,launched_on='manualvm',locked=False,locked_by=None,memory_mb=64,metadata={},new_flavor=None,node='manualvm',numa_topology=<?>,old_flavor=None,os_type=None,pci_devices=<?>,pci_requests=<?>,power_state=4,progress=0,project_id='df3f
26e1b7384a749ead0781a707491a',ramdisk_id='7c2ac51d-e571-4de6-b303-0302653677d8',reservation_id='r-40fs0tcw',root_device_name='/dev/vda',root_gb=0,scheduled_at=None,security_groups=SecurityGroupList,shutdown_terminate=False,system_metadata={image_base_image_ref='',image_checksum='eb9139e4942121f22bbc2afc0400b2a4',image_container_format='ami',image_disk_format='ami',image_image_id='5ce2d454-426c-4db5-8631-64228e29ff53',image_image_name='cirros-0.3.4-x86_64-uec',image_kernel_id='f203cd87-b5ed-491a-b7a5-46ad2e63bcbf',image_min_disk='0',image_min_ram='0',image_ramdisk_id='7c2ac51d-e571-4de6-b303-0302653677d8',image_size='25165824'},tags=<?>,task_state='deleting',terminated_at=None,updated_at=2015-07-21T08:14:04Z,user_data=None,user_id='9c6a53d821864b3ab3fc98933c672faf',uuid=adbe1fa4-7136-4d29-91d0-5772dbf4900d,vcpu_model=<?>,vcpus=1,vm_mode=None,vm_state='stopped')
vif=VIF({'profile': None, 'ovs_interfaceid': None, 'preserve_on_delete':
False, 'network': Network({'bridge': u'br100', 'sub
nets': [Subnet({'ips': [FixedIP({'meta': {}, 'version': 4, 'type': u'fixed',
'floating_ips': [], 'address': u'10.10.0.4'})], 'version': 4, 'meta':
{u'dhcp_server': u'10.10.0.1'}, 'dns': [IP({'meta': {}, 'version': 4, 'type':
u'dns', 'address': u'8.8.4.4'})], 'routes': [], 'cidr': u'10.10.0.0/24',
'gateway': IP({'meta': {}, 'version': 4, 'type': u'gateway', 'address':
u'10.10.0.1'})}), Subnet({'ips': [], 'version': None, 'meta': {u'dhcp_server':
None}, 'dns': [], 'routes': [], 'cidr': None, 'gateway': IP({'meta': {},
'version': None, 'type': u'gateway', 'address': None})})], 'meta':
{u'tenant_id': None, u'should_create_bridge': True, u'bridge_interface':
u'tap1'}, 'id': u'4be2d94e-e059-44e4-a781-919ccf9600a7', 'label': u'private'}),
'devname': None, 'vnic_type': u'normal', 'qbh_params': None, 'meta': {},
'details': {}, 'address': u'fa:16:3e:de:a8:56', 'active': False, 'type':
u'bridge', 'id': u'011753cb-a2d1-4cd0-bde6-3abf9b381871', 'qbg_params': None})
unplug /opt/stack/nova/nova/vi
rt/libvirt/vif.py:800
2015-07-21 08:14:05.169 DEBUG oslo_concurrency.lockutils
[req-e9bea12a-88ef-4f08-a320-d6e8e3b21228
tempest-TestVolumeBootPatternV2-1465284168
tempest-TestVolumeBootPatternV2-966547300] Lock "connect_volume" acquired by
"disconnect_volume" :: waited 0.000s inner
/usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py:251
2015-07-21 08:14:05.170 DEBUG oslo_concurrency.processutils
[req-e9bea12a-88ef-4f08-a320-d6e8e3b21228
tempest-TestVolumeBootPatternV2-1465284168
tempest-TestVolumeBootPatternV2-966547300] Running cmd (subprocess): findmnt
--target /opt/stack/data/nova/mnt/38effaab97f9ee27ecb78121f511fa07 --source
[email protected]:7861/quobyteci_test_volume execute
/usr/local/lib/python2.7/dist-packages/oslo_concurrency/processutils.py:230
2015-07-21 08:14:05.198 DEBUG oslo_concurrency.processutils
[req-e9bea12a-88ef-4f08-a320-d6e8e3b21228
tempest-TestVolumeBootPatternV2-1465284168
tempest-TestVolumeBootPatternV2-966547300] CMD "findmnt --target
/opt/stack/data/nova/mnt/38effaab97f9ee27ecb78121f511fa07 --source
[email protected]:7861/quobyteci_test_volume" returned: 0 in 0.028s execute
/usr/local/lib/python2.7/dist-packages/oslo_concurrency/processutils.py:260
2015-07-21 08:14:05.199 DEBUG nova.virt.libvirt.quobyte
[req-e9bea12a-88ef-4f08-a320-d6e8e3b21228
tempest-TestVolumeBootPatternV2-1465284168
tempest-TestVolumeBootPatternV2-966547300] Unmounting
/opt/stack/data/nova/mnt/38effaab97f9ee27ecb78121f511fa07 umount_volume
/opt/stack/nova/nova/virt/libvirt/quobyte.py:55
2015-07-21 08:14:05.200 DEBUG oslo_concurrency.processutils
[req-e9bea12a-88ef-4f08-a320-d6e8e3b21228
tempest-TestVolumeBootPatternV2-1465284168
tempest-TestVolumeBootPatternV2-966547300] Running cmd (subprocess):
umount.quobyte /opt/stack/data/nova/mnt/38effaab97f9ee27ecb78121f511fa07
execute
/usr/local/lib/python2.7/dist-packages/oslo_concurrency/processutils.py:230
2015-07-21 08:14:05.260 DEBUG oslo_concurrency.processutils
[req-e9bea12a-88ef-4f08-a320-d6e8e3b21228
tempest-TestVolumeBootPatternV2-1465284168
tempest-TestVolumeBootPatternV2-966547300] CMD "umount.quobyte
/opt/stack/data/nova/mnt/38effaab97f9ee27ecb78121f511fa07" returned: 0 in
0.059s execute
/usr/local/lib/python2.7/dist-packages/oslo_concurrency/processutils.py:260
2015-07-21 08:14:05.260 DEBUG oslo_concurrency.lockutils
[req-e9bea12a-88ef-4f08-a320-d6e8e3b21228
tempest-TestVolumeBootPatternV2-1465284168
tempest-TestVolumeBootPatternV2-966547300] Lock "connect_volume" released by
"disconnect_volume" :: held 0.091s inner
/usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py:262
[..]
2015-07-21 08:14:07.243 DEBUG nova.compute.manager
[req-e9bea12a-88ef-4f08-a320-d6e8e3b21228
tempest-TestVolumeBootPatternV2-1465284168
tempest-TestVolumeBootPatternV2-966547300] [instance:
adbe1fa4-7136-4d29-91d0-5772dbf4900d] terminating bdm
BlockDeviceMapping(boot_index=0,connection_info='{"driver_volume_type":
"quobyte", "mount_point_base": "/opt/stack/data/cinder/mnt", "serial":
"313f97e6-e36a-4536-a7c6-00c340f12f8e", "data": {"name":
"volume-313f97e6-e36a-4536-a7c6-00c340f12f8e", "format": "qcow2", "encrypted":
false, "qos_specs": null, "export": "176.9.127.22:7861/quobyteci_test_volume",
"access_mode": "rw", "options":
null}}',created_at=2015-07-21T08:13:32Z,delete_on_termination=False,deleted=False,deleted_at=None,destination_type='volume',device_name='/dev/vda',device_type='disk',disk_bus='virtio',guest_format=None,id=178,image_id=None,instance=<?>,instance_uuid=adbe1fa4-7136-4d29-91d0-5772dbf4900d,no_device=False,snapshot_id=None,source_type='volume',updated_at=2015-07-21
T08:13:39Z,volume_id='313f97e6-e36a-4536-a7c6-00c340f12f8e',volume_size=1)
_cleanup_volumes /opt/stack/nova/nova/compute/manager.py:2265
2015-07-21 08:14:07.466 DEBUG oslo_concurrency.lockutils
[req-e9bea12a-88ef-4f08-a320-d6e8e3b21228
tempest-TestVolumeBootPatternV2-1465284168
tempest-TestVolumeBootPatternV2-966547300] Lock "compute_resources" acquired by
"update_usage" :: waited 0.000s inner
/usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py:251
2015-07-21 08:14:07.467 DEBUG nova.objects.instance
[req-e9bea12a-88ef-4f08-a320-d6e8e3b21228
tempest-TestVolumeBootPatternV2-1465284168
tempest-TestVolumeBootPatternV2-966547300] Lazy-loading `numa_topology' on
Instance uuid adbe1fa4-7136-4d29-91d0-5772dbf4900d obj_load_attr
/opt/stack/nova/nova/objects/instance.py:1016
2015-07-21 08:14:07.528 DEBUG oslo_concurrency.lockutils
[req-e9bea12a-88ef-4f08-a320-d6e8e3b21228
tempest-TestVolumeBootPatternV2-1465284168
tempest-TestVolumeBootPatternV2-966547300] Lock "compute_resources" released by
"update_usage" :: held 0.061s inner
/usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py:262
2015-07-21 08:14:07.777 DEBUG oslo_concurrency.lockutils
[req-e9bea12a-88ef-4f08-a320-d6e8e3b21228
tempest-TestVolumeBootPatternV2-1465284168
tempest-TestVolumeBootPatternV2-966547300] Lock
"adbe1fa4-7136-4d29-91d0-5772dbf4900d" released by "do_terminate_instance" ::
held 2.627s inner
/usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py:262
So what i see is that Nova terminates (including umount) at 08:14:05 until
08:14:07 and Cinder wants to remove the snapshot and check's the volumes state
at 08:14:10 until 08:14:11 where it is still 'in-use'. Cinder subsequently
chooses to contact Nova for snapshot deletion which fails as nova has already
umounted the required volume.
Has anybody seen similar issues before?
And i'm grateful for hints/pointers to the code where the volume status is
updated, i could not find out where that happens, so far.
PS: This setup uses the change under review in
https://review.openstack.org/#/c/192736/12 . Essentially i ran into
the issue by doing a manual tempest test run of that change.
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