cinder-csi: Adds support for managing backups (kubernetes#2473) #2480

Sebastian-RG · 2023-11-25T04:37:15Z

What this PR does / why we need it:
This allows for creating and deleting cinder backups from K8S via VolumeSnapshot objects that have a VolumeSnapshotClass with parameters.type = "backup".

Backups are different from snapshots in that they are usually stored off-site, for example via S3 or NFS.

Which issue this PR fixes(if applicable):
fixes #2473

Special notes for reviewers:
Create a VolumeSnapshotClass that has parameters.type equal to "backup"

apiVersion: snapshot.storage.k8s.io/v1
kind: VolumeSnapshotClass
metadata:
  name: csi-cinder-snapclass
driver: cinder.csi.openstack.org
deletionPolicy: Delete
parameters:
  force-create: "false"
  type: "snapshot"

Create a volumeSnapshot that has a Cinder PVC as the Source. This creates a Backup. Deleting this also deletes the backup.

apiVersion: snapshot.storage.k8s.io/v1
kind: VolumeSnapshot
metadata:
  name: new-snapshot-demo
spec:
  volumeSnapshotClassName: csi-cinder-snapclass
  source:
    persistentVolumeClaimName: pvc-snapshot-demo

Create a PVC that has the previouse VolumeSnapshot as the source.
The requested size must be greater than the backup size.
This creates a volume populated with the backup data.

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: snapshot-demo-restore
spec:
  storageClassName: csi-sc-cinderplugin
  dataSource:
    name: new-snapshot-demo
    kind: VolumeSnapshot
    apiGroup: snapshot.storage.k8s.io
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 2Gi

Release note:

[cinder-csi-plugin] Adds support for managing cinder backups via volumeSnapshot objects by adding a parameter to the corresponding volumeSnapshotClass

linux-foundation-easycla · 2023-11-25T04:37:19Z

The committers listed above are authorized under a signed CLA.

✅ login: Sebastian-RG / name: Sebastian Rojas (21fc3fd)

k8s-ci-robot · 2023-11-25T04:37:23Z

Welcome @Sebastian-RG!

It looks like this is your first PR to kubernetes/cloud-provider-openstack 🎉. Please refer to our pull request process documentation to help your PR have a smooth ride to approval.

You will be prompted by a bot to use commands during the review process. Do not be afraid to follow the prompts! It is okay to experiment. Here is the bot commands documentation.

You can also check if kubernetes/cloud-provider-openstack has its own contribution guidelines.

You may want to refer to our testing guide if you run into trouble with your tests not passing.

If you are having difficulty getting your pull request seen, please follow the recommended escalation practices. Also, for tips and tricks in the contribution process you may want to read the Kubernetes contributor cheat sheet. We want to make sure your contribution gets all the attention it needs!

Thank you, and welcome to Kubernetes. 😃

k8s-ci-robot · 2023-11-25T04:37:24Z

Hi @Sebastian-RG. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

jichenjc · 2023-11-27T01:40:34Z

/ok-to-test

jichenjc · 2023-11-27T01:59:23Z

force-create: "false"
type: "snapshot"

a typo here ? should be backup??

Sebastian-RG · 2023-11-27T18:26:36Z

It seems the E2E test failed, but I can't tell how it's related to the changes I made 🤔

 + lib/databases/mysql:configure_database_mysql:107 :   '[' mysql == mariadb ']'
+ lib/databases/mysql:configure_database_mysql:108 :   sudo mysqladmin -u root password password
mysqladmin: connect to server at 'localhost' failed
error: 'Access denied for user 'root'@'localhost' (using password: NO)'
+ lib/databases/mysql:configure_database_mysql:108 :   true
+ lib/databases/mysql:configure_database_mysql:113 :   is_ubuntu

Nov 27 18:19:19 devstack neutron-server[63269]: DEBUG dbcounter [-] [63269] Writing DB stats neutron:SELECT=99,neutron:UPDATE=1 {{(pid=63269) stat_writer /usr/local/lib/python3.10/dist-packages/dbcounter.py:114}}
Nov 27 18:19:19 devstack neutron-server[63269]: WARNING neutron.plugins.ml2.drivers.ovn.mech_driver.ovsdb.ovn_client [None req-7f03ad2a-0a07-4a62-9942-c63275e34d16 None None] No hosting information found for port 7a747b1a-aa6d-4d21-b14f-765b9978e33b: RuntimeError: No hosting information found for port 7a747b1a-aa6d-4d21-b14f-765b9978e33b
Nov 27 18:19:19 devstack neutron-server[63268]: DEBUG ovsdbapp.backend.ovs_idl.transaction [-] Running txn n=1 command(idx=0): DbSetCommand(_result=None, table=Logical_Switch_Port, record=03cac3e3-48cb-46dc-95ff-acae066ef47a, col_values=(('external_ids', {'neutron:host_id': 'devstack'}),), if_exists=True) {{(pid=63268) do_commit /usr/local/lib/python3.10/dist-packages/ovsdbapp/backend/ovs_idl/transaction.py:89}}

Sebastian-RG · 2023-11-27T18:43:21Z

I think I found the error
https://prow.k8s.io/view/gs/kubernetes-jenkins/pr-logs/pull/cloud-provider-openstack/2480/openstack-cloud-csi-cinder-e2e-test/1729199407322107904#1:build-log.txt%3A20647

+ ::                                       :   curl -sSL https://cloud-images.ubuntu.com/releases/focal/release/ubuntu-20.04-server-cloudimg-amd64.img -o ubuntu-focal.img
curl: (35) OpenSSL SSL_connect: Connection reset by peer in connection to cloud-images.ubuntu.com:443 
+ ::                                       :   openstack image create ubuntu-focal --container-format bare --disk-format qcow2 --public --file ubuntu-focal.img
'ubuntu-focal.img' is not a valid file

looks like a flake. This then causes
https://prow.k8s.io/view/gs/kubernetes-jenkins/pr-logs/pull/cloud-provider-openstack/2480/openstack-cloud-csi-cinder-e2e-test/1729199407322107904#1:build-log.txt%3A20713

+ ::                                       :   openstack server create k3s-master --image ubuntu-focal --flavor ds2G --key-name k3s_keypair --nic port-id=4d6ff2d4-407f-460f-8ce4-10af6db5428a --user-data /home/stack/devstack/init_k3s.yaml --wait
No Image found for ubuntu-focal

Rerun the test?

Sebastian-RG · 2023-11-27T18:44:52Z

/retest

pkg/csi/cinder/controllerserver.go

pkg/csi/cinder/openstack/openstack_backups.go

pkg/csi/cinder/controllerserver.go

kayrus · 2023-11-30T09:25:11Z

@Sebastian-RG can you fill in the release notes in the initial PR message?

Sebastian-RG · 2024-01-10T23:58:30Z

/retest

dulek · 2024-01-11T16:24:45Z

pkg/csi/cinder/controllerserver.go

+			if err != nil {
+				//If there is an error getting the backup as well, fail.
+				return nil, status.Errorf(codes.NotFound, "VolumeContentSource Snapshot or Backup with ID %s not found", snapshotID)
+			}


I don't think API will behave differently if cinder-backup is not deployed. In such case API will still get us a 404, as GET call doesn't RPC down to cinder-backup and just looks the items up in the DB: https://opendev.org/openstack/cinder/src/branch/master/cinder/backup/api.py#L71-L76.

If backups are optional, wouldn't it be better to put all the backup operations behind an if based on existence of the backup API extension: https://docs.openstack.org/api-ref/block-storage/v3/#list-known-api-extensions ?

dulek · 2024-01-11T16:29:38Z

pkg/csi/cinder/controllerserver.go

@@ -413,8 +594,18 @@ func (cs *controllerServer) DeleteSnapshot(ctx context.Context, req *csi.DeleteS
 		return nil, status.Error(codes.InvalidArgument, "Snapshot ID must be provided in DeleteSnapshot request")
 	}

+	// If volumeSnapshot object was linked to a cinder backup, delete the backup.
+	back, err := cs.Cloud.GetBackupByID(id)


As I explained above, GET call on backups will not tell us anything about cinder-backup being present in the deployment, but now I think it does make some sense to probe for backup existence, because on DELETE call we'll crash here: https://opendev.org/openstack/cinder/src/branch/master/cinder/backup/api.py#L120. Thanks, please mark this one as resolved.

pkg/csi/cinder/openstack/openstack_backups.go

Sebastian-RG · 2024-01-16T22:22:34Z

@dulek @kayrus Added a check BackupsAreEnabled() to see if a cluster supports backups. Please tell me if any issues are pending.

dulek · 2024-01-17T16:53:05Z

pkg/csi/cinder/openstack/openstack_backups.go

+
+func (os *OpenStack) BackupsAreEnabled() (bool, error) {
+	// Check if the backup service is enabled
+	allPages, err := services.List(os.blockstorage, services.ListOpts{Binary: backupBinary}).AllPages()


This is an admin-only API, this will not work when user is a regular tenant of the cloud, so it's not acceptable for CSI. I rather proposed checking if backups API extension is enabled, but I see gophercloud currently doesn't have such an API. Let's make this method return true, nil for now, I'll take a look on how to add the new gophercloud API and we'll be able to fix this in a follow up patch.

There is no way of checking if it's enabled or not by getting the extensions. I've tested cases environments where backups are not enabled and openstack still lists the Backups and CreateBackup extensions :(

Listing services was the only reliable way i found to tell if backups are enabled.

I also thought about just listing all backups and seeing if it returns an error but it just returns an empty list. I'll set it to return true, nil as you say

I know, admins tend to forget about configuring the extensions correctly. Well, we can't do much about environments that return incorrect data, but it's probably the thing to look at. Anyway it's not a big deal at this state.

dulek · 2024-01-17T16:54:26Z

pkg/csi/cinder/controllerserver.go

+	var sourceVolID string
+	var sourceBackupID string
+	var backupsAreEnabled bool
+	backupsAreEnabled, err = cloud.BackupsAreEnabled()


Could we cache this as a part of controllerServer struct so that it's only calling API once, on service startup? At a glance I'm not sure it's possible…?

I think the added delay for a createVolume or createSnapshot action should not be noticeable. Also if we do this at controller startup it might be hard to debug when adding backups capability to an existing cluster.

This can be done as a second step, I think.

dulek · 2024-01-19T14:11:33Z

/lgtm

dulek · 2024-01-19T14:12:22Z

I'll let @kayrus and @zetaab have another look before lifting the hold.

Sebastian-RG · 2024-01-30T14:58:04Z

Hi @kayrus, @zetaab. Do you have any additional comments?

Signed-off-by: Sebastian-RG <[email protected]>

Sebastian-RG · 2024-02-07T17:46:39Z

/retest

dulek · 2024-02-08T11:45:57Z

/retest

It should be good now.

dulek · 2024-02-08T11:47:17Z

/lgtm

zetaab · 2024-02-08T18:55:52Z

@Sebastian-RG thanks for driving this through!

/hold cancel

k8s-ci-robot added the release-note-none Denotes a PR that doesn't merit a release note. label Nov 25, 2023

k8s-ci-robot requested review from mdbooth and zetaab November 25, 2023 04:37

k8s-ci-robot added the cncf-cla: no Indicates the PR's author has not signed the CNCF CLA. label Nov 25, 2023

k8s-ci-robot added the needs-ok-to-test Indicates a PR that requires an org member to verify it is safe to test. label Nov 25, 2023

k8s-ci-robot added the size/XL Denotes a PR that changes 500-999 lines, ignoring generated files. label Nov 25, 2023

Sebastian-RG force-pushed the master branch from 6af591a to d821888 Compare November 25, 2023 04:42

k8s-ci-robot added cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. and removed cncf-cla: no Indicates the PR's author has not signed the CNCF CLA. labels Nov 25, 2023

k8s-ci-robot added ok-to-test Indicates a non-member PR verified by an org member that is safe to test. and removed needs-ok-to-test Indicates a PR that requires an org member to verify it is safe to test. labels Nov 27, 2023

Sebastian-RG force-pushed the master branch from d821888 to 177db86 Compare November 27, 2023 18:03

zetaab requested changes Nov 27, 2023

View reviewed changes

zetaab reviewed Nov 27, 2023

View reviewed changes

pkg/csi/cinder/openstack/openstack_backups.go Outdated Show resolved Hide resolved

Sebastian-RG force-pushed the master branch 2 times, most recently from de0bd43 to 7d90197 Compare November 28, 2023 20:23

zetaab reviewed Nov 29, 2023

View reviewed changes

pkg/csi/cinder/controllerserver.go Outdated Show resolved Hide resolved

jeffyjf suggested changes Nov 29, 2023

View reviewed changes

pkg/csi/cinder/controllerserver.go Outdated Show resolved Hide resolved

Sebastian-RG force-pushed the master branch 2 times, most recently from ef01bb9 to b0ea276 Compare December 1, 2023 22:25

k8s-ci-robot added the release-note Denotes a PR that will be considered when it comes time to generate release notes. label Dec 1, 2023

Sebastian-RG force-pushed the master branch from 5a16a1e to 8c6a05c Compare January 10, 2024 23:22

Sebastian-RG requested review from kayrus and dulek January 11, 2024 14:00

dulek requested changes Jan 11, 2024

View reviewed changes

Sebastian-RG force-pushed the master branch from 8c6a05c to fe51f1c Compare January 16, 2024 20:10

dulek requested changes Jan 17, 2024

View reviewed changes

Sebastian-RG force-pushed the master branch from fe51f1c to 168136d Compare January 18, 2024 15:30

k8s-ci-robot assigned dulek Jan 19, 2024

k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Jan 19, 2024

k8s-ci-robot added the needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. label Feb 2, 2024

cinder-csi: Adds support for managing backups (kubernetes#2473)

21fc3fd

Signed-off-by: Sebastian-RG <[email protected]>

Sebastian-RG force-pushed the master branch from 168136d to 21fc3fd Compare February 7, 2024 16:03

k8s-ci-robot removed lgtm "Looks good to me", indicates that a PR is ready to be merged. needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. labels Feb 7, 2024

dulek approved these changes Feb 8, 2024

View reviewed changes

k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Feb 8, 2024

k8s-ci-robot removed the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Feb 8, 2024

k8s-ci-robot merged commit e87f506 into kubernetes:master Feb 8, 2024
6 checks passed

zetaab mentioned this pull request Apr 8, 2024

[cinder-csi-plugin] define availability zone for snapshot backup #2569

Merged

This was referenced Jun 14, 2024

OCPBUGS-35462: rebase CPO master on upstream 1.30 openshift/cloud-provider-openstack#286

Closed

OCPBUGS-34137, OCPBUGS-34460, OCPBUGS-34113, OCPBUGS-35462: sync upstream on release-1.30/go1.22 openshift/cloud-provider-openstack#287

Merged

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

cinder-csi: Adds support for managing backups (kubernetes#2473) #2480

cinder-csi: Adds support for managing backups (kubernetes#2473) #2480

Sebastian-RG commented Nov 25, 2023 •

edited

Loading

linux-foundation-easycla bot commented Nov 25, 2023 •

edited

Loading

k8s-ci-robot commented Nov 25, 2023

k8s-ci-robot commented Nov 25, 2023

jichenjc commented Nov 27, 2023

jichenjc commented Nov 27, 2023 •

edited

Loading

Sebastian-RG commented Nov 27, 2023

Sebastian-RG commented Nov 27, 2023

Sebastian-RG commented Nov 27, 2023

kayrus commented Nov 30, 2023

Sebastian-RG commented Jan 10, 2024

dulek Jan 11, 2024

dulek Jan 11, 2024

Sebastian-RG commented Jan 16, 2024

dulek Jan 17, 2024

Sebastian-RG Jan 18, 2024

dulek Jan 19, 2024

dulek Jan 17, 2024

Sebastian-RG Jan 18, 2024

dulek Jan 19, 2024

dulek commented Jan 19, 2024

dulek commented Jan 19, 2024

Sebastian-RG commented Jan 30, 2024

Sebastian-RG commented Feb 7, 2024

dulek commented Feb 8, 2024

dulek commented Feb 8, 2024

zetaab commented Feb 8, 2024

cinder-csi: Adds support for managing backups (kubernetes#2473) #2480

cinder-csi: Adds support for managing backups (kubernetes#2473) #2480

Conversation

Sebastian-RG commented Nov 25, 2023 • edited Loading

linux-foundation-easycla bot commented Nov 25, 2023 • edited Loading

k8s-ci-robot commented Nov 25, 2023

k8s-ci-robot commented Nov 25, 2023

jichenjc commented Nov 27, 2023

jichenjc commented Nov 27, 2023 • edited Loading

Sebastian-RG commented Nov 27, 2023

Sebastian-RG commented Nov 27, 2023

Sebastian-RG commented Nov 27, 2023

kayrus commented Nov 30, 2023

Sebastian-RG commented Jan 10, 2024

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Sebastian-RG commented Jan 16, 2024

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

Choose a reason for hiding this comment

dulek commented Jan 19, 2024

dulek commented Jan 19, 2024

Sebastian-RG commented Jan 30, 2024

Sebastian-RG commented Feb 7, 2024

dulek commented Feb 8, 2024

dulek commented Feb 8, 2024

zetaab commented Feb 8, 2024

Sebastian-RG commented Nov 25, 2023 •

edited

Loading

linux-foundation-easycla bot commented Nov 25, 2023 •

edited

Loading

jichenjc commented Nov 27, 2023 •

edited

Loading