>>>>> On Tue, 17 Sep 2019 15:26:28 +0200, Miklos Szeredi <miklos@xxxxxxxxxx> said: > Ah, the way to disable these is to disable acl on the exported filesystem. I.e. > mount -oremount,noacl $EXPORTED_FS That works perfect for me. Thanks a lot for your help. It would be nice to add a note about this in the kernel overlayfs.txt. What about this: The lower filesystem can be any filesystem supported by Linux and does -not need to be writable. The lower filesystem can even be another +not need to be writable. If you are using an NFS v4 mount as lower +filesystem, you should disable acl on the exported filesystem. +The lower filesystem can even be another -- regards Thomas