An implementation of overlay+shiftfs in FUSE for rootless containers.
$ fuse-overlayfs -o lowerdir=lowerdir/a:lowerdir/b,upperdir=up,workdir=workdir merged
Specify a different UID/GID mapping:
$ fuse-overlayfs -o uidmapping=0:10:100:100:10000:2000,gidmapping=0:10:100:100:10000:2000,lowerdir=lowerdir/a:lowerdir/b,upperdir=up,workdir=workdir merged
If you are not using the static build as explained in the next chapter, your system needs libfuse > v3.2.1.
dnf install fuse3-develapt install libfuse3-devAlso, please note that, when using fuse-overlayfs from a user namespace (for example, when using rootless podman) a Linux Kernel > v4.18.0 is required.
This project provides a convenient way to automatically perform a static build using a container. The result is a self-contained binary without dependencies, that can be copied across hosts.
Install buildah as explained here;
Both the build and deploy host require the special device /dev/fuse; there are a few ways to obtain it:
fuse2 or fuse3 using the package manager of your choice (dnf, apt, pacman, etc): the install script will usually create the device automatically; ormknod /dev/fuse -m 0666 c 10 229 (see this code)Clone this repository, and switch to the top-level folder containing the file "Containerfile.static.ubuntu";
Launch the build with the command (note the single dot . at the end):
buildah bud -v $PWD:/build/fuse-overlayfs -t fuse-overlayfs -f ./Containerfile.static.ubuntu .
sudo cp fuse-overlayfs /usr/bin/
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