Troubleshooting S3 File Upload Failures With Infomaniak Cloud Storage And ENOENT Errors

by ADMIN 88 views
Iklan Headers

Hey guys! We've got a bit of a head-scratcher here with file uploads in LibreChat when using Infomaniak Cloud Storage. It seems like some users are running into issues where the uploads fail, and then the system throws an ENOENT error when trying to delete a temporary file. Let's dive into the details and see what's going on. We'll break this down into sections to make it super clear. This is definitely a high-priority issue since file uploads are crucial for a smooth user experience. Understanding the intricacies of S3 file uploads is vital for ensuring seamless operation across diverse cloud storage solutions. The challenges encountered with Infomaniak Cloud Storage highlight the importance of compatibility testing and robust error handling in modern applications.

Bug Report Overview

Environment Details

  • LibreChat Version: v0.7.8
  • Cloud Platform: Infomaniak Cloud Storage (S3-compatible)
  • Deployment: Kubernetes
  • Backend: Node.js

Issue Description

The core problem we're tackling is that the file upload functionality is failing with S3 upload errors. Following these failed uploads, we're seeing ENOENT (Error NO ENTity) errors popping up during file deletion. This usually means the system is trying to delete a file that, well, doesn't exist. Users are encountering this when they try to upload images or files through the LibreChat interface. This issue with S3 file uploads is particularly noticeable when integrating with Infomaniak Cloud Storage, emphasizing the need for tailored solutions to address compatibility challenges. The subsequent ENOENT error during file deletion suggests a potential flaw in the error handling mechanism, where the system attempts to delete a file that either doesn't exist or has already been removed.

Error Logs Analysis

Let's break down those error logs to get a clearer picture. Here's a snippet:

2025-08-15T07:41:18.748Z error: [saveBufferToS3] Error uploading buffer to S3:
2025-08-15T07:41:18.748Z error: [uploadImageToS3] Error uploading image to S3:
2025-08-15T07:41:18.749Z error: [/files/images] Error processing file:
2025-08-15T07:41:18.750Z error: [/files/images] Error deleting file: ENOENT: no such file or directory, unlink '/app/client/public/images/689db22e002485246d608d11/Screenshot_2025-07-... [truncated]'
2025-08-15T07:41:18.751Z debug: [/files/images] Temp. image upload file deleted

From these logs, we can see that the initial error is in uploading the buffer to S3. This is followed by an attempt to delete a temporary file, which results in the ENOENT error. It looks like the system tries to clean up even though the upload never succeeded, which leads to the deletion attempt on a non-existent file. This highlights a potential issue in the error handling logic, particularly when dealing with S3 file uploads. The ENOENT error further suggests a synchronization problem between the file processing steps, where the system attempts to delete a file that was never successfully created or has already been removed.

Configuration Deets

  • S3 Endpoint: https://s3.pub1.infomaniak.cloud
  • File Strategy: s3
  • Storage Backend: Infomaniak Cloud Storage (S3-compatible)

Steps to Recreate the Issue

  1. Deploy LibreChat with the Infomaniak S3 backend.
  2. Try uploading an image or file through the chat interface.
  3. Boom! You should see the S3 upload failure followed by the dreaded ENOENT error.

Expected vs. Actual Behavior

  • Expected: Files should seamlessly upload to Infomaniak S3 storage, and no ENOENT errors should darken our doorstep.
  • Actual: S3 upload fails spectacularly, the system tries to delete a temporary file ghost, and the ENOENT error haunts our logs.

Additional Context

It's worth noting that this issue seems to be specific to Infomaniak S3-compatible storage. File uploads work fine with other S3 providers. The error chain reaction happens in the file processing pipeline, right after the S3 upload goes belly up. This points to a need for specific handling or compatibility adjustments for Infomaniak Cloud Storage. The fact that the S3 file uploads work with other providers but fail with Infomaniak suggests a potential discrepancy in the S3 implementation or the configuration settings required for this particular service.

Environment Variables and LibreChat Configuration

Here are the relevant environment variables:

AWS_REGION=us-east-1
AWS_BUCKET_NAME=librechat
AWS_ENDPOINT_URL=https://s3.pub1.infomaniak.cloud

And the LibreChat configuration:

fileConfig:
  serverFileSizeLimit: 100 # MB
fileStrategy: s3

These configurations indicate that the system is set up to use S3 file uploads, with specific settings for the AWS region, bucket name, and endpoint URL tailored for Infomaniak Cloud Storage. The fileConfig settings also specify a file size limit, which could potentially interact with the upload process and contribute to the issue.

Investigation Time: Questions We Need to Answer

  1. Infomaniak's Special Sauce: Is there any specific handling or configuration needed for Infomaniak S3-compatible storage that we're missing? This is a crucial question as it directly addresses the compatibility of S3 file uploads with Infomaniak Cloud Storage. Understanding the nuances of Infomaniak's S3 implementation is key to resolving this issue.
  2. Robust Deletion Logic: Should the file deletion logic be smarter? Maybe it should check if the file actually exists before trying to delete it. Enhancing the error handling for file deletion is essential to prevent ENOENT errors. This involves implementing checks to ensure the file exists before attempting to delete it, thereby improving the overall robustness of the file processing pipeline.
  3. Compatibility Conundrums: Are there any known compatibility issues between LibreChat and Infomaniak's S3 implementation? Knowing potential incompatibilities can guide us toward specific workarounds or fixes for S3 file uploads. Addressing known issues can significantly streamline the debugging process and lead to a more stable integration with Infomaniak Cloud Storage.

Priority and Labels

  • Priority: HIGH – File upload is a core feature, guys! This directly impacts user experience.
  • Labels: bug, file-upload, s3, infomaniak, v0.7.8

Deep Dive into the Technical Details

To really nail this issue, let's dig deeper into the technical aspects. We need to understand the flow of data during the file upload process and where things might be going wrong. This means examining the code responsible for S3 file uploads and the error handling mechanisms in place.

Understanding the File Upload Flow

  1. User Initiates Upload: The user selects a file through the LibreChat interface and initiates the upload.
  2. Temporary Storage: The file is temporarily stored on the server, likely in a temporary directory. This is a common practice to handle the file before it's sent to the final storage location.
  3. S3 Upload Attempt: The system attempts to upload the file (or a buffer of the file) to Infomaniak S3 storage using the configured endpoint, bucket name, and credentials. This step is where the initial error occurs, as indicated by the [saveBufferToS3] and [uploadImageToS3] error logs.
  4. Cleanup Process: If the upload fails, the system should clean up any temporary files created during the process. This is where the ENOENT error surfaces, indicating a problem in this cleanup phase. The ENOENT error suggests that the system is attempting to delete a file that either doesn't exist or has already been removed, pointing to a potential race condition or mismanaged file state.

Potential Problem Areas

  • S3 Upload Failure: The primary issue is the failure to upload the file to S3. This could be due to various reasons, such as:
    • Incorrect S3 Configuration: Misconfigured endpoint URL, bucket name, or credentials.
    • Network Issues: Connectivity problems between the LibreChat server and Infomaniak S3 storage.
    • Permissions: Insufficient permissions to write to the S3 bucket.
    • File Size Limits: The file exceeding the configured serverFileSizeLimit.
    • Infomaniak S3 Compatibility: Specific requirements or quirks in Infomaniak's S3 implementation that are not being handled correctly.
  • File Deletion Logic: The ENOENT error indicates a flaw in the file deletion process. This could be due to:
    • Premature Deletion Attempt: The system trying to delete the file before it has been fully written or before the upload process has completed.
    • Missing File: The file not being created in the first place due to the upload failure.
    • Race Condition: Another process or thread deleting the file concurrently.

Code Examination

To pinpoint the exact cause, we need to dive into the code, specifically the sections responsible for:

  • S3 Upload: The functions handling the upload of the file buffer to S3 (e.g., saveBufferToS3, uploadImageToS3).
  • Error Handling: The error handling logic for S3 upload failures and the subsequent cleanup process.
  • File Deletion: The function responsible for deleting the temporary file.

By examining the code, we can identify potential issues such as:

  • Missing Error Checks: Lack of proper error handling for S3 upload failures, leading to the cleanup process being triggered even when the file was never successfully created.
  • Incorrect File Paths: Errors in constructing the file path for deletion, causing the system to look for a non-existent file.
  • Asynchronous Issues: Problems with asynchronous operations, leading to race conditions where the file is deleted before the upload process is fully complete.

Formulating a Solution Strategy

Based on our investigation, we can formulate a solution strategy that addresses the identified problem areas. This strategy should include:

  1. Verifying S3 Configuration: Double-check the S3 configuration, including the endpoint URL, bucket name, credentials, and region. Ensure they are correctly configured for Infomaniak Cloud Storage. This is a fundamental step to ensure S3 file uploads are properly configured.
  2. Implementing Robust Error Handling: Enhance the error handling logic to specifically address S3 upload failures. This involves:
    • Checking for Upload Success: Ensure the cleanup process is only triggered if the S3 upload was successful.
    • Logging Detailed Errors: Log detailed error messages for S3 upload failures to aid in debugging.
    • Retrying Uploads: Consider implementing a retry mechanism for transient S3 upload failures.
  3. Improving File Deletion Logic: Strengthen the file deletion process by:
    • Checking File Existence: Verify the file exists before attempting to delete it.
    • Handling Asynchronous Operations: Ensure proper synchronization of asynchronous operations to avoid race conditions.
  4. Investigating Infomaniak S3 Compatibility: Research and address any specific compatibility requirements or quirks of Infomaniak Cloud Storage. This might involve:
    • Consulting Infomaniak Documentation: Reviewing Infomaniak's S3 compatibility documentation.
    • Testing with Infomaniak Specific Tools: Using Infomaniak's S3 testing tools or SDKs.
  5. Testing and Monitoring: Thoroughly test the solution after implementation and monitor the system for any recurring issues. Comprehensive testing is crucial to ensure the fix effectively addresses the problem and does not introduce new issues with S3 file uploads.

By systematically addressing these areas, we can resolve the S3 file upload failure and the subsequent ENOENT error, ensuring a smooth file upload experience for LibreChat users on Infomaniak Cloud Storage.

Let's keep digging and get this sorted out, guys! We'll update you as we make progress.