fix: change misleading error message to warning level #3316
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WalkthroughThe pull request introduces enhancements to the volume controller, focusing on error handling, logging, and volume state management. Key modifications include refining error logging to use warning levels for specific conditions, improving the logic for volume state transitions, and enhancing the management of replicas. These changes aim to ensure that the volume controller operates more robustly and provides clearer logging for operations related to volume and replica management. Changes
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Documentation and Community
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When new replicas are created, the following error messages are emitted in the longhorn-manager. Empty timestamp is expected in this case, so the error messages are misleading. Longhorn 9916 Signed-off-by: Derek Su <derek.su@suse.com>
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@mergify backport v1.7.x v1.6.x |
✅ Backports have been created
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🧹 Outside diff range and nitpick comments (2)
controller/volume_controller.go (2)
Line range hint
991-992: Refactor Suggestion: Simplify Switch Case BlocksIn the
reconcileAttachDetachStateMachinefunction, consider refactoring theswitchstatement at lines 991-992 for improved readability. Grouping similar cases or extracting logic into helper functions can enhance maintainability.
Line range hint
3311-3311: Enhance Log Message with Additional ContextAt line 3311, the log message uses
log.Warnf("%v", err). Consider adding context to the log message to aid in debugging, such as:-log.Warnf("%v", err) +log.Warnf("Failed to process volume %v: %v", v.Name, err)
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📒 Files selected for processing (1)
controller/volume_controller.go(1 hunks)
🔇 Additional comments (7)
controller/volume_controller.go (7)
752-755: Appropriate Use of Warnf for Logging
At lines 752-755, the logging statement has been changed to use log.Warnf instead of log.Errorf. This adjustment correctly lowers the severity level of the log message, aligning with the intent to change misleading error messages to warning level.
Line range hint 882-889: Ensure Correct Handling of Volume Robustness
At lines 882-889, the code appropriately updates the volume's robustness status and conditions when the volume is not in a faulted state. This ensures that the robustness is set to Unknown unless the volume is faulted, in which case it checks for restore requirements.
Line range hint 1000-1004: Correct Event Logging on Volume Detachment
At lines 1000-1004, the code correctly logs an event when a volume has been detached. This provides valuable information for monitoring and auditing volume state changes.
Line range hint 1048-1050: Proper Event Logging on Volume Attachment
At lines 1048-1050, an event is recorded when the volume is attached to a node. This ensures transparency and traceability of volume operations.
Line range hint 2969-2970: Confirm Log Request Mechanism
At lines 2969-2970, setting e.Spec.LogRequested = true and r.Spec.LogRequested = true requests logs from the engine and replicas. Verify that this mechanism functions as intended and does not introduce excessive logging or performance issues.
Line range hint 3010-3014: Graceful Handling of Update Conflicts
At lines 3010-3014, the code checks for conflicts when updating resources and re-queues the volume if a conflict is detected. This ensures that transient conflicts are handled gracefully without causing failures in the reconciliation loop.
Line range hint 1686-1688: Verify the Existence of the Priority Class
At lines 1686-1688, the code sets the PriorityClassName for the Pod if the priorityClass is not empty. Ensure that the specified priority class exists in the cluster to prevent scheduling issues.
Run the following script to verify that the priority class exists:
Which issue(s) this PR fixes:
Issue longhorn/longhorn#9916
When new replicas are created, the following error messages are emitted in the longhorn-manager. Empty timestamp is expected in this case, so the error messages are misleading.
What this PR does / why we need it:
Special notes for your reviewer:
Additional documentation or context