Rclone won't write to Google Cloud Storage but only to cache on Windows

I'm trying using rclone with WinFSP to mount a Google Cloud Storage bucket as a drive (say S:) on Windows server 2019 VM on GCP.

In file explorer, I can access files and folders on S: , which are in GCS bucket. But after I create or copy some files to that drive, though I can access those new files in S:, but when I use gclound storage ls command to check the content in GCS bucket, they are not there. This seems not a delayed write issue, because even 10 minutes later, they still not in GCS bucket but only in file explorer.
I can use gsutil cp command to copy files to GCS without problem. Files just go into bucket.

Is that an issue of rclone or WInFSP? What can I do to make it work?

rclone version: 1.69.1

  • os/version: Microsoft Windows Server 2019 Datacenter 1809 (64 bit)
  • os/kernel: 10.0.17763.6414 (x86_64)
  • os/type: windows
  • os/arch: amd64
  • go/version: go1.24.0
  • go/linking: static
  • go/tags: cmount

WinFSP version: 2.0.23075

rclone config redacted reads:

[MyGCS]
type = google cloud storage
location = asia-east1
env_auth = true
object_acl = private
bucket_acl = private
bucket_policy_only = true

The rclone logs after you have run a file copy into your S: drive will help to figure out what rclone is doing and why it's not uploading to your cloud storage.

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