> This disabled NFS3 support seems only to affect the client part of the kernel-module.
NFSv3 is fine, it's udp that is disabled in the kernel (I think you understood that, and above is just a typo, but clarifying nonetheless). Clients running a kernel with CONFIG_NFS_DISABLE_UDP_SUPPORT=y should not be able to mount NFS exports using udp, that's my understanding. I believe it can still *export* (aka, server) nfs via udp. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1964093 Title: nfsver=3,udp not working anymore Status in linux package in Ubuntu: Confirmed Bug description: Package: nfs-kernel-server Architecture: amd64 Version: 1:2.6.1-1~exp1ubuntu1 nfsversion 3 with proto udp seems not to be supported by the nfs- kernel-server anymore. In Ubuntu 18.04 (nfs-kernel-server 1:1.3.4-2.1ubuntu5) it was still possible. I could mount with either tcp or udp: 1. tcp mount -o nfsvers=3 192.168.0.1:/srv/nfs/testshare /mnt mount|grep mnt: 192.168.0.1:/srv/nfs/testshare on /mnt type nfs (rw,relatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.0.1,mountvers=3,mountport=59808,mountproto=udp,local_lock=none,addr=192.168.0.1) 2. udp mount -o nfsvers=3,udp 192.168.0.1:/srv/nfs/testshare /mnt mount|grep mnt: 192.168.0.1:/srv/nfs/testshare on /mnt type nfs (rw,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,hard,proto=udp,timeo=11,retrans=3,sec=sys,mountaddr=192.168.0.1,mountvers=3,mountport=59808,mountproto=udp,local_lock=none,addr=192.168.0.1) Now in Ubuntu 22.04 I get the message: mount.nfs: an incorrect mount option was specified I tried to enable upd in /etc/nfs.conf in section [nfsd]: [nfsd] # debug=0 # threads=8 # host= # port=0 # grace-time=90 # lease-time=90 # udp=n udp=y # tcp=y # vers2=n # vers3=y But there was no effect. nfs3 with udp is needed by several busybox mount binaries in initrds of Knoppix and other live distributions used via PXE boot. Best regards Jörg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1964093/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
