NFS root mounts are handled by nfsmount which is part of the klibc-utils package. nfsmount only accepts integers for the 'vers' argument. And only values 2 and 3 are valid:
$ ./usr/bin/nfsmount -o vers=4.1 4.1: invalid value for vers $ ./usr/bin/nfsmount -o vers=4 ./usr/bin/nfsmount: bad NFS version '4' $ ./usr/bin/nfsmount -o vers=3 ./usr/bin/nfsmount: need a path The kernel does support NFSv4: ./lib/modules/5.13.0-1011-raspi/kernel/fs/nfs/nfsv4.ko -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1954716 Title: rpi nfsroot vers=4 not supported anymore? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/1954716/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
