On 16 Nov 2023, at 2:11, Martin Wege wrote: > Hello, > > Does NFSv4 close-to-open consistency on the client work with server > "async" mount open? Yes, I believe it should, but I am looking at knfsd code and I think it won't. > We see several build errors here with parallel GNU Makefile update, > where one process writes a file, exists, and the next process doesn't > see all data (linker ar: file too short). > But if you manually look at it the files are OK, and completely written. > > What is this? NFSv4 client bug, NFSv4 server bug, admin error (async > breaking close-to-open consistency? Hard to say, a wire capture would show. My guess is that the server's "async" disables the write gather in nfsd_vfs_write(). > Also, is close-to-open consistency guaranteed between different NFSv4 clients? Yes. Ben
