Hi Miklos, We are developing a docker related system that requires to union directories on NFS and local filesystem. I successfully created a overlayfs that has lower layer located on NFS and upper layer located on the local file system. But when I tried to create new files in the directory located on NFS, I got error message: "Operation not supported". Does that mean I can not create new files inside the directory located on NFS? But base on the documentation of overlayfs, lower layer does not need to be writable. Steps to reproduce the problem are (/mnt/nfs is the NFS mount, /home/zc is the local mount) 1. create directory "/mnt/nfs/lower/lower_dir" 2. create directories "/home/zc/upper/upper_dir", "/home/zc/work" and "/home/zc/merged" 3. create overlayfs by running command mount -t overlay overlay -o\ lowerdir=/mnt/nfs/lower,\ upperdir=/home/zc/upper,\ workdir=/home/zc/work \ /home/zc/merged 4. Try to create new file "/merged/lower_dir/test.txt" and get error message "Operation not supported" Thanks, Charles -- To unsubscribe from this list: send the line "unsubscribe linux-unionfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
