Ssh_fx_failure?

What would you guys do to trouble shoot this?

2020-01-01 20:45:14.126 ERROR UPLOAD_CHUNK Failed to upload the chunk 6f1c72d1ff7267bf3f2822c0f0c18d2185b3b209193bae46a7022a6ae4f81324: sftp: “Failure” (SSH_FX_FAILURE)
Failed to upload the chunk 6f1c72d1ff7267bf3f2822c0f0c18d2185b3b209193bae46a7022a6ae4f81324: sftp: “Failure” (SSH_FX_FAILURE)

According to the RFC, SSH_FX_FAILURE is a generic error that could indicate a lot of different errors.

   SSH_FX_FAILURE
      An error occurred, but no specific error code exists to describe
      the failure.

      This error message SHOULD always have meaningful text in the the
      'error message' field.

Obviously in this case the underlying SSH implementation didn’t return “meaningful text”.

Are you running the latest version? In recent versions the SFTP backend should retry a few times before reporting an error.

I think I am on the latest version but will double check. Thanks!

Sorry I was wrong. The SFTP backend only retries on EOF errors (that is, when the connection is unexpectedly closed), so even the latest version would not retry on this SSH_FX_FAILURE error.

Does this error persist if you run the backup again?

It seems to have subsided for now… I’ll report back next time it happens.