On Mon, Jan 29, 2018 at 01:22:49PM +0100, Wolfgang Walter wrote: > Hello, > > after upgrading our nfs-server from 4.9.75 to 4.9.78 group permissions stop > working (for clients). If you need group permissions to access a file or > directory, sometimes access is granted, but rather often denied. Often access > to the same object is denied within seconds after access was granted in an > earlier access. user permissions work fine. > > Downgrading to 4.9.75 fixes the issue. Any chance you can use 'git bisect' to find the offending commit? And also, does 4.14 work properly for you? 4.15? thanks, greg k-h