On Tue, Mar 02, 2021 at 02:23:05AM +0100, Timo Rothenpieler wrote: > Server and reading client disagreeing about the files size and > contents is 100% reproducible, even after the writing client has > long and definitely closed the file. OK, I reproduced this myself and watched the network traffic in Wireshark. The server is *not* giving out a read delegation to the writer (which is what the commit you bisected to should have allowed). It *is* giving out a delegation to the reader. Which is a truly awful bug. Investigating.... --b.