tuxera/ntfs-3g

[Feature Request]FUSE Passthrough?

RushingAlien opened this issue · 2 comments

RushingAlien commented

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 ntfs-3g 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.
jpandre commented

AFAIK this is only possible for a layered file system relying on a kernel-based file system ("lower file system" in the link you referenced)

unsound commented

Yes, this is specifically for layered filesystems where the outer layer FUSE daemon can authenticate requests but then allow direct pass-through of read/write requests to the underlying file system. So this feature is not applicable to the ntfs-3g use case. Closing this...