> In 11.1 did you see the message "WARNING: could not flush dirty data: Function not implemented" Yes
re: the discussions of O/S and filesystem in that thread: I am not qualified to describe the implementation of WSL but I believe it is neither pure Ubuntu running on metal, nor a virtual machine hosted on Windows. I believe what the Microsoft folks have done is implement something around the driver/kernel layer that fools Ubuntu into thinking it is connected to hardware it expects, while it is ultimately still running on top of a Windows kernel and Windows filesystem. That includes stubbing out or otherwise presenting an appearance of implementing some functions like perhaps fsync() that it really doesn't. Note I believe this is fundamentally different from the old Cygwin and similar projects approach, i.e. WSL does not involve recompiling on top of window specific libraries etc. If any of these details are important to anyone you should verify them from a more credible source. If it matters, the Ubuntu version I am running on WSL now is 16.04.5. On Thu, Feb 14, 2019 at 3:44 PM Ravi Krishna <srkrishna...@aol.com> wrote: > Hi Bruce, > > Check my earlier thread on PG 10.5 on Ubuntu Bash with WSL. > > > https://www.postgresql.org/message-id/1301077575.68539.1535929075959%40mail.yahoo.com > > In 11.1 did you see the message "WARNING: could not flush dirty data: > Function not implemented" > > regards >
