{"record":{"id":"4cf4e5904a06df70","repo":"hashicorp/nomad","slug":"missing-stagingtargetpath-4cf4e5","errorCode":null,"errorMessage":"missing stagingTargetPath","messagePattern":"missing stagingTargetPath","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"plugins/csi/client.go","lineNumber":834,"sourceCode":"\t\tcase codes.Internal:\n\t\t\terr = fmt.Errorf(\"node plugin returned an internal error, check the plugin allocation logs for more information: %v\", err)\n\t\t}\n\t}\n\n\treturn err\n}\n\nfunc (c *client) NodeUnstageVolume(ctx context.Context, volumeID string, stagingTargetPath string, opts ...grpc.CallOption) error {\n\tif err := c.ensureConnected(ctx); err != nil {\n\t\treturn err\n\t}\n\t// These errors should not be returned during production use but exist as aids\n\t// during Nomad development\n\tif volumeID == \"\" {\n\t\treturn fmt.Errorf(\"missing volumeID\")\n\t}\n\tif stagingTargetPath == \"\" {\n\t\treturn fmt.Errorf(\"missing stagingTargetPath\")\n\t}\n\n\treq := &csipbv1.NodeUnstageVolumeRequest{\n\t\tVolumeId:          volumeID,\n\t\tStagingTargetPath: stagingTargetPath,\n\t}\n\n\t// NodeUnstageVolume's response contains no extra data. If err == nil, we were\n\t// successful.\n\t_, err := c.nodeClient.NodeUnstageVolume(ctx, req, opts...)\n\tif err != nil {\n\t\tcode := status.Code(err)\n\t\tswitch code {\n\t\tcase codes.NotFound:\n\t\t\terr = fmt.Errorf(\"%w: volume %q could not be found: %v\",\n\t\t\t\tstructs.ErrCSIClientRPCIgnorable, volumeID, err)\n\t\tcase codes.Internal:\n\t\t\terr = fmt.Errorf(\"node plugin returned an internal error, check the plugin allocation logs for more information: %v\", err)","sourceCodeStart":816,"sourceCodeEnd":852,"githubUrl":"https://github.com/hashicorp/nomad/blob/482b49bf1aec006f089bcfc7e632d8f6ac303e5e/plugins/csi/client.go#L816-L852","documentation":"NodeUnstageVolume in the Nomad CSI client wrapper returns this sentinel error before issuing the gRPC call when the stagingTargetPath argument is an empty string. Like the sibling 'missing volumeID' check, it is a development-time aid that prevents sending a malformed NodeUnstageVolumeRequest to the CSI plugin. It indicates the caller lost track of the staging path for the volume claim.","triggerScenarios":"Calling client.NodeUnstageVolume(ctx, volumeID, \"\") with an empty staging path — e.g. when the task's volume staging directory path was not persisted with the claim or was cleared during agent state restoration.","commonSituations":"Host-volume staging directory configuration changes between runs; restoring node state after a crash where the staging path in the claim struct was empty; hand-written code against the CSI client that omits StagingTargetPath.","solutions":["Pass the same staging target path that was used in the matching NodeStageVolume call","Ensure the volume claim/persisted state records StagingTargetPath before unstage","Verify the client volume stanza and hook wiring populate the path on restore","If the volume was never staged, skip the unstage call instead of calling it with an empty path"],"exampleFix":"// before\ncsi.Client.NodeUnstageVolume(ctx, volumeID, \"\")\n// after\nif stagingPath == \"\" {\n\treturn fmt.Errorf(\"cannot unstage volume %q: staging path unknown\", volumeID)\n}\ncsi.Client.NodeUnstageVolume(ctx, volumeID, stagingPath)","handlingStrategy":"validation","validationCode":"if stagingTargetPath == \"\" {\n\treturn fmt.Errorf(\"cannot unstage volume %q: stagingTargetPath is empty\", volumeID)\n}\n// proceed to client.NodeUnstageVolume(ctx, volumeID, stagingTargetPath)","typeGuard":"func hasStagingPath(p string) bool { return strings.TrimSpace(p) != \"\" }","tryCatchPattern":"err := client.NodeUnstageVolume(ctx, volumeID, stagingPath)\nif err != nil && strings.Contains(err.Error(), \"missing stagingTargetPath\") {\n\t// developer-aid error: log and skip or recover the path from claim state\n\tlogger.Warn(\"unstage skipped: empty stagingTargetPath\", \"volume\", volumeID)\n\treturn nil\n}\nreturn err","preventionTips":["Persist StagingTargetPath alongside the volume claim so it survives restarts","Reuse the exact path passed to NodeStageVolume","Add a preflight check that the staging path exists on disk before unstage"],"tags":["csi","go","nomad","volume-management","empty-argument"],"backgroundTag":"missing-required-argument","analyzedSha":"482b49bf1aec006f089bcfc7e632d8f6ac303e5e","analyzedAt":"2026-09-04T07:54:14.808Z","contentChangedAt":"2026-09-04T07:54:14.808Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}