I see the problem in the upstream code.
Starting backports to upstream stable branches.
Hello Alan, Is it possible to include the fix into RHOSP13 also? Best Regards, Keigo Noha
The fix will be available in OSP-13z3. The patch is on upstream stable/queens, and will be brought downstream during the next bulk import. You may soon see this BZ cloned to track the fix for all releases (except OSP-11, which is EOL) back down to OSP-10.
Just to clarify, if you follow bug #1641111 you will see the upstream patch for this issue will be included in the next OSP-13 release. Work continues on backporting the fix downstream for this OSP-10 release.
Verified on: openstack-cinder-9.1.4-44.el7ost.noarch Configure cache setting UC PROJECT_ID = openstack project list | grep admin | awk {'print $2'} USER_ID = openstack user list | grep admin | awk {'print $2'} crudini --set /etc/cinder/cinder.conf DEFAULT cinder_internal_tenant_project_id $PROJECT_ID crudini --set /etc/cinder/cinder.conf DEFAULT cinder_internal_tenant_user_id $USER_ID crudini --set /etc/cinder/cinder.conf tripleo_iscsi image_volume_cache_enabled True crudini --set /etc/cinder/cinder.conf tripleo_iscsi image_volume_cache_max_count 2 systemctl stop openstack-cinder-volume.service systemctl start openstack-cinder-volume.service Upload three different images: glance image-create --disk-format qcow2 --container-format bare --file cirros-0.3.5-i386-disk.img --name cirros glance image-create --disk-format raw --container-format bare --file cirros-0.3.5-i386-disk.raw --name cirros.raw glance image-create --disk-format iso --container-format bare --file dsl-4.4.10.iso --name dsl Create a volume, see it's associated image-xx cache volume. cinder create 1 --image cirros --name cirros c-vol log cache for host hostgroup@tripleo_iscsi#tripleo_iscsi current_size (GB) = 1 (max = 0), current count = 1 (max = 2). ensure_space /usr/lib/python2.7/site-packages/cinder/image/cache.py:146 cinder list +--------------------------------------+-----------+--------------------------------------------+------+-------------+----------+--------------------------------------+ | ID | Status | Name | Size | Volume Type | Bootable | Attached to | +--------------------------------------+-----------+--------------------------------------------+------+-------------+----------+--------------------------------------+ | 20a7e726-cb65-47e8-b929-50335eaf6178 | available | image-63e42d41-afc8-4c9a-a6c3-f2acf660b058 | 1 | - | false | | | 3602e295-fcfb-4146-b82f-32a42203824a | available | cirros | 1 | - | true | Create a second volume cinder create 1 --image cirros.raw --name cirros.raw Volume created we also now have two images cached volumes. cinder list +--------------------------------------+-----------+--------------------------------------------+------+-------------+----------+--------------------------------------+ | ID | Status | Name | Size | Volume Type | Bootable | Attached to | +--------------------------------------+-----------+--------------------------------------------+------+-------------+----------+--------------------------------------+ | 20a7e726-cb65-47e8-b929-50335eaf6178 | available | image-63e42d41-afc8-4c9a-a6c3-f2acf660b058 | 1 | - | false | | | 3602e295-fcfb-4146-b82f-32a42203824a | available | cirros | 1 | - | true | | | 6fa80756-4f40-461d-8b71-d47eafa30ce4 | available | image-52179e9d-e6ea-4d3d-a84f-ce04d45562f1 | 1 | - | false | | | 71a5897c-69d7-4c6b-a243-f1ba64017249 | available | cirros.raw | 1 | - | true | Now the third volume cinder create 1 --image dsl --name dsl Notice 3 volumes and only two cached images, notice one of the cached images was replaced. image-63e42d41.. was replaced with image-4210239e +--------------------------------------+----------------------------------+-----------+--------------------------------------------+------+-------------+----------+--------------------------------------+ | ID | Tenant ID | Status | Name | Size | Volume Type | Bootable | Attached to | +--------------------------------------+----------------------------------+-----------+--------------------------------------------+------+-------------+----------+--------------------------------------+ | 1ffbfb1b-faed-4137-8dad-6146958c7d28 | a95cb0dd6fc7482292a46ea8a05d5d23 | available | image-4210239e-ef6c-4538-a5e5-c6b13611502f | 1 | - | false | | | 3602e295-fcfb-4146-b82f-32a42203824a | a95cb0dd6fc7482292a46ea8a05d5d23 | available | cirros | 1 | - | true | | | 3609cf76-f715-4706-89b7-91ecc2e1d548 | a95cb0dd6fc7482292a46ea8a05d5d23 | available | dsl | 1 | - | true | | | 6fa80756-4f40-461d-8b71-d47eafa30ce4 | a95cb0dd6fc7482292a46ea8a05d5d23 | available | image-52179e9d-e6ea-4d3d-a84f-ce04d45562f1 | 1 | - | false | | | 71a5897c-69d7-4c6b-a243-f1ba64017249 | a95cb0dd6fc7482292a46ea8a05d5d23 | available | cirros.raw | 1 | - | true | C-vol log evict notice d': u'20a7e726-cb65-47e8-b929-50335eaf6178', 'id': 5, 'size': 1}. evict /usr/lib/python2.7/site-packages/cinder/image/cache.py:45 2018-12-03 12:44:48.741 69686 DEBUG cinder.image.cache [req-c3a3b4a3-9a58-40fc-902f-a7347ebc3b44 d27672ee3f5546749333de4c1956aab2 a95cb0dd6fc7482292a46ea8a05d5d23 - - -] ImageVolumeCache notification: action=evict data={'image_id': u'63e42d41-afc8-4c9a-a6c3-f2acf660b058', 'host': u'hostgroup@tripleo_iscsi#tripleo_iscsi'}. _notify_cache_action /usr/lib/python2.7/site-packages/cinder/image/cache.py:192 2018-12-03 12:44:48.752 69686 DEBUG cinder.image.cache [req-c3a3b4a3-9a58-40fc-902f-a7347ebc3b44 d27672ee3f5546749333de4c1956aab2 a95cb0dd6fc7482292a46ea8a05d5d23 - - -] Image-volume cache for host hostgroup@tripleo_iscsi#tripleo_iscsi new size (GB) = 2, new count = 2. ensure_space /usr/lib/python2.7/site-packages/cinder/image/cache.py:163 2018-12-03 12:44:58.484 69686 DEBUG cinder.image.cache [req-c3a3b4a3-9a58-40fc-902f-a7347ebc3b44 d27672ee3f5546749333de4c1956aab2 a95cb0dd6fc7482292a46ea8a05d5d23 - - -] Creating new image-volume cache entry for image 4210239e Looks great. Tip for reference: DEFAULT cinder_internal_tenant_project_id ... DEFAULT cinder_internal_tenant_user_id .... These two under are set under backend itself tripleo_iscsi image_volume_cache_enabled True tripleo_iscsi image_volume_cache_max_count 2 Restart service/docker Related config bits https://docs.openstack.org/cinder/latest/admin/blockstorage-image-volume-cache.html
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2019:0079