Teat Case Test_pvc_snapshot[CephFileSystem] Failed When Waiting For PVC From Snapshot
Introduction
In this article, we will discuss a test case failure in the OpenShift Data Foundation (ODF) 4.18.0, specifically the test_pvc_snapshot[CephFileSystem] test case. This test case failed due to the PVC creation from snapshot taking more than the given time. We will delve into the details of the issue, analyze the error messages, and provide a solution to resolve the problem.
Understanding the Issue
The test_pvc_snapshot[CephFileSystem] test case is designed to test the creation of a PVC from a snapshot. However, in this instance, the PVC creation took longer than the expected time, resulting in a test case failure. The error message indicates that the PVC is still in a pending state, and the provisioner is waiting for a volume to be created.
Error Messages
The error messages provide valuable information about the issue. The first error message indicates that the provisioner failed to provision the volume due to a pending clone from snapshot. The second error message suggests that the provisioner is already in progress, and the PVC creation is delayed.
ocs_ci.ocs.exceptions.ResourceWrongStatusException: Resource restore-pvc-test-2fb5272dacab4b6ca44567c describe output: Name: restore-pvc-test-2fb5272dacab4b6ca44567c
Namespace: namespace-test-77757caab9124f6e84bb76e71
StorageClass: ocs-storagecluster-cephfs
Status: Pending
Volume:
Labels: <none>
Annotations: volume.beta.kubernetes.io/storage-provisioner: openshift-storage.cephfs.csi.ceph.com
volume.kubernetes.io/storage-provisioner: openshift-storage.cephfs.csi.ceph.com
Finalizers: [kubernetes.io/pvc-protection]
Capacity:
Access Modes:
VolumeMode: Filesystem
DataSource:
APIGroup: snapshot.storage.k8s.io
Kind: VolumeSnapshot
Name: snapshot-test-bb4563fdf10946b5bd4b2bde14
Used By: <none>
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Warning ProvisioningFailed 92s openshift-storage.cephfs.csi.ceph.com_csi-cephfsplugin-provisioner-54cb54b7bc-vg6mn_47bdc660-7704-4415-b530-e66347e681ae failed to provision volume with StorageClass "ocs-storagecluster-cephfs": rpc error: code = Aborted desc = clone from snapshot is pending
Normal Provisioning 25s (x8 over 95s) openshift-storage.cephfs.csi.ceph.com_csi-cephfsplugin-provisioner-54cb54b7bc-vg6mn_47bdc660-7704-4415-b530-e66347e681ae External provisioner is provisioning volume for claim "namespace-test-77757caab9124f6e84bb76e71/restore-pvc-test-2fb5272dacab4b6ca44567c"
Warning ProvisioningFailed 24s (x7 over 91s) openshift-storage.cephfs.csi.ceph.com_csi-cephfsplugin-provisioner-54cb54b7bc-vg6mn_47bdc660-7704-4415-b530-e66347e681ae failed to provision volume with StorageClass "ocs-storagecluster-cephfs": rpc error: code = Aborted desc = clone from snapshot is already in progress
Normal ExternalProvisioning 9s (x8 over 95s) persistentvolume-controller Waiting for a volume to be created either by the external provisioner 'openshift-storage.cephfs.csi.ceph.com' or manually by the system administrator. If volume creation is delayed, please verify that the provisioner is running and correctly registered.
Analyzing the Error Messages
The error messages indicate that the provisioner is waiting for a volume to be created, and the PVC creation is delayed. This suggests that the issue is related to the provisioner's ability to create a volume from the snapshot.
Solution
To resolve this issue, we need to increase the timeout value for the PVC creation. We can do this by modifying the wait_for_resource_state function to increase the timeout value.
helpers.wait_for_resource_state(
restore_pvc_obj, constants.STATUS_BOUND, timeout=300
)
By increasing the timeout value, we can give the provisioner more time to create the volume from the snapshot. This should resolve the issue and allow the test case to pass.
Conclusion
In this article, we discussed a test case failure in the test_pvc_snapshot[CephFileSystem] test case. We analyzed the error messages and identified the issue as related to the provisioner's ability to create a volume from the snapshot. We provided a solution by increasing the timeout value for the PVC creation. By following this solution, we can resolve the issue and ensure that the test case passes.
Additional Information
- The test case failure occurred in ODF 4.18.0.
- The error messages indicate that the provisioner is waiting for a volume to be created, and the PVC creation is delayed.
- Increasing the timeout value for the PVC creation resolves the issue.
References
- Report Portal
Teat case test_pvc_snapshot[CephFileSystem] failed when waiting for PVC from snapshot: Q&A =====================================================================================
Introduction
In our previous article, we discussed a test case failure in the test_pvc_snapshot[CephFileSystem] test case. We analyzed the error messages and identified the issue as related to the provisioner's ability to create a volume from the snapshot. We provided a solution by increasing the timeout value for the PVC creation. In this article, we will answer some frequently asked questions related to this issue.
Q: What is the cause of the test case failure?
A: The test case failure is caused by the provisioner's inability to create a volume from the snapshot within the given time frame.
Q: What is the role of the provisioner in PVC creation?
A: The provisioner is responsible for creating a volume from the snapshot. It waits for the volume to be created and then binds it to the PVC.
Q: Why is the provisioner waiting for a volume to be created?
A: The provisioner is waiting for a volume to be created because it is unable to create the volume from the snapshot within the given time frame.
Q: How can I increase the timeout value for the PVC creation?
A: You can increase the timeout value for the PVC creation by modifying the wait_for_resource_state function to increase the timeout value.
Q: What are the benefits of increasing the timeout value for the PVC creation?
A: Increasing the timeout value for the PVC creation allows the provisioner more time to create the volume from the snapshot, which can resolve the issue and allow the test case to pass.
Q: Can I increase the timeout value for the PVC creation in a production environment?
A: It is generally not recommended to increase the timeout value for the PVC creation in a production environment, as it can lead to delays in PVC creation and impact the overall performance of the system.
Q: What are some best practices for troubleshooting PVC creation issues?
A: Some best practices for troubleshooting PVC creation issues include:
- Checking the provisioner logs for errors
- Verifying that the provisioner is running and correctly registered
- Increasing the timeout value for the PVC creation
- Checking the PVC creation status and events
Q: Can I use a different provisioner for PVC creation?
A: Yes, you can use a different provisioner for PVC creation. However, you will need to configure the provisioner and update the PVC creation process accordingly.
Q: What are some common issues that can cause PVC creation to fail?
A: Some common issues that can cause PVC creation to fail include:
- Provisioner errors
- PVC creation timeout
- Volume creation issues
- Snapshot creation issues
Conclusion
In this article, we answered some frequently asked questions related to the test_pvc_snapshot[CephFileSystem] test case failure. We provided information on the cause of the issue, the role of the provisioner, and best practices for troubleshooting PVC creation issues. We also discussed the benefits and risks of increasing the timeout value for the PVC creation and provided information on using a different provisioner for PVC creation.
Additional Information
- The test case failure occurred in ODF 4.18.0.
- The error messages indicate that the provisioner is waiting for a volume to be created, and the PVC creation is delayed.
- Increasing the timeout value for the PVC creation resolves the issue and allows the test case to pass.