Hello, A version of wrapfs with support for operation on top of NFS is available here: https://github.com/bdzwillo/wrapfs_nfs The major additions are: - support for remote file locks - fixes for operation on top of remote file systems - example code to wrap vfs-write-ops in a separate branch Since the original wrapfs shows its age, the lookup-, locking- & mmap-code was simplified based on code from the ecryptfs & overlayfs kernel modules. This version was developed for a centos-7.8 kernel and NFSv3 filer mounts, because this matches the setup in our company. I hope this can be useful also for other environments - the centos vfs api lags behind the current vanilla kernel, but the internals are very much alike. In retrospect I must say it is really hard to get the locking right on the vfs layer. Perhaps it would be useful to add example code for a working vfs loopback driver to the kernel source tree. Thanks, Barnim -- Barnim Dzwillo STRATO AG, Pascalstrasse 10, 10587 Berlin Shared Hosting Development
