{"record":{"id":"f96e7f1143e1fd33","repo":"plandex-ai/plandex","slug":"error-writing-convo-message-v","errorCode":null,"errorMessage":"error writing convo message: %v","messagePattern":"error writing convo message: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"app/server/db/convo_helpers.go","lineNumber":128,"sourceCode":"\n\tmessage.CreatedAt = ts\n\n\tbytes, err := json.Marshal(message)\n\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"error marshalling convo message: %v\", err)\n\t}\n\n\terr = os.MkdirAll(convoDir, os.ModePerm)\n\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"error creating convo dir: %v\", err)\n\t}\n\n\terr = os.WriteFile(filepath.Join(convoDir, message.Id+\".json\"), bytes, os.ModePerm)\n\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"error writing convo message: %v\", err)\n\t}\n\n\terr = AddPlanConvoMessage(message, branch)\n\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"error adding convo tokens: %v\", err)\n\t}\n\n\tvar desc string\n\tif message.Role == openai.ChatMessageRoleUser {\n\t\tdesc = \"💬 User prompt\"\n\t\t// TODO: add user name\n\t} else {\n\t\tdesc = \"🤖 Plandex reply\"\n\t\tif message.Stopped {\n\t\t\tdesc += \" | 🛑 \" + color.New(color.FgHiRed).Sprint(\"stopped\")\n\t\t}\n\t}","sourceCodeStart":110,"sourceCodeEnd":146,"githubUrl":"https://github.com/plandex-ai/plandex/blob/e2d772072efadbe41d2946d97d79be55532dbab5/app/server/db/convo_helpers.go#L110-L146","documentation":"StoreConvoMessage writes the marshalled JSON to <convoDir>/<message.Id>.json with os.WriteFile after successfully creating the directory. This error wraps that write failure; the directory exists but the file could not be created or fully written, so the convo message was not persisted (though the in-memory Id was already assigned).","triggerScenarios":"os.WriteFile fails: permission denied on the existing convo directory, disk full (ENOSPC) mid-write, message.Id contains path-hostile characters (it shouldn't — it's a UUID — but an injected Id could break the path), I/O error on the storage device, or quota exceeded.","commonSituations":"Disk/quota exhaustion on busy servers storing many large replies; permission drift after a restore or container image change; NFS/EBS transient I/O errors; a message.Id supplied by a fork/plugin that is empty or contains a '/' creating an invalid path.","solutions":["Check the wrapped *PathError: fix permissions (chown/chmod) on the convo directory if EACCES","Free disk space / check quota if the error is ENOSPC or EDQUOT","Ensure message.Id is either empty (it gets a fresh UUID) or a valid UUID before calling StoreConvoMessage","Check volume/disk health (dmesg, smartctl) if the error indicates an I/O error","Retry the store after fixing storage — the message was not committed yet, so a clean retry is safe"],"exampleFix":"// before\nmessage.Id = userSuppliedId\nerr = os.WriteFile(filepath.Join(convoDir, message.Id+\".json\"), bytes, os.ModePerm)\n// after\nif message.Id == \"\" {\n    message.Id = uuid.New().String()\n}\nerr = os.WriteFile(filepath.Join(convoDir, message.Id+\".json\"), bytes, os.ModePerm)","handlingStrategy":"retry","validationCode":"convoDir := getPlanConversationDir(orgId, planId)\nif info, err := os.Stat(convoDir); err != nil || !info.IsDir() {\n    return fmt.Errorf(\"convo dir not ready: %s\", convoDir)\n}\nif err := syscall.Access(convoDir, os.O_WRONLY); err != nil {\n    return fmt.Errorf(\"convo dir not writable: %w\", err)\n}\nif free, err := diskFree(convoDir); err == nil && free < 10<<20 {\n    return fmt.Errorf(\"low disk: %d bytes free\", free)\n}","typeGuard":"func isWritePathError(err error) bool {\n    var pe *fs.PathError\n    return errors.As(err, &pe) && pe.Op == \"open\"\n}","tryCatchPattern":"id, err := db.StoreConvoMessage(repo, msg, userId, branch, true)\nif err != nil {\n    if strings.Contains(err.Error(), \"writing convo message\") && isTransient(err) {\n        time.Sleep(500 * time.Millisecond)\n        id, err = db.StoreConvoMessage(repo, msg, userId, branch, true) // safe: nothing committed yet\n    }\n    return err\n}","preventionTips":["Monitor free disk space and inode usage on the data volume","Enforce disk quotas headroom for message storage","Never inject arbitrary message.Id values — let the library assign a UUID","Check storage device health logs after any EIO error","Ensure file permissions on convo dirs survive restores"],"tags":["go","filesystem","write","disk"],"backgroundTag":"disk-full-write-failed","analyzedSha":"e2d772072efadbe41d2946d97d79be55532dbab5","analyzedAt":"2026-09-05T20:56:53.631Z","contentChangedAt":"2026-09-05T20:56:53.631Z","schemaVersion":2},"datasetVersion":"2026-09-14T00:17:10.932Z"}