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containers / fuse-overlayfs

FUSE implementation for overlayfs
GNU General Public License v2.0
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FUSE Passthrough? #419

Open RushingAlien opened 4 months ago

RushingAlien commented 4 months ago

Linux 6.9 introduced FUSE passthrough, which will allow better performance for fuse-based filesystems. https://source.android.com/docs/core/storage/fuse-passthrough

gambar

I don't know if there is work that needs to be done on the fuse-overlayfs side to utliize it, but seeing the android documentation, it seems to be a yes.

When the FUSE daemon receives a request to open a file, it decides whether FUSE passthrough should be available for that particular file. If it's available, the daemon:

  • Notifies the FUSE driver about this request.
  • Enables FUSE passthrough for the file using the FUSE_DEV_IOC_PASSTHROUGH_OPEN ioctl, which must be performed on the file descriptor of the opened /dev/fuse.
giuseppe commented 3 months ago

yes, we need to use the new interface provided by libfuse.

Unfortunately, it will work only for the root user, which is not a common use case for fuse-overlayfs