I restored nfs-utils 1.x in the jammy client, and tried to mount again.
It still fails. I don't think this is an nfs-utils problem:
ubuntu@j-nfs-dep8:~$ dpkg -l|grep nfs
ii libnfsidmap2:amd64 0.25-6build1 amd64
NFS idmapping library
ii nfs-common 1:1.3.4-6ubuntu1 amd64
NFS support files common to client and server
ubuntu@j-nfs-dep8:~$ sudo -i
root@j-nfs-dep8:~# mount f1:/storage /mnt -o udp -v
mount.nfs: timeout set for Tue Mar 8 17:54:59 2022
mount.nfs: trying text-based options
'udp,vers=4.2,addr=192.168.122.197,clientaddr=192.168.122.61'
mount.nfs: mount(2): Invalid argument
mount.nfs: trying text-based options
'udp,vers=4.1,addr=192.168.122.197,clientaddr=192.168.122.61'
mount.nfs: mount(2): Invalid argument
mount.nfs: trying text-based options
'udp,vers=4.0,addr=192.168.122.197,clientaddr=192.168.122.61'
mount.nfs: mount(2): Invalid argument
mount.nfs: trying text-based options 'udp,addr=192.168.122.197'
mount.nfs: prog 100003, trying vers=3, prot=17
mount.nfs: trying 192.168.122.197 prog 100003 vers 3 prot UDP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.122.197 prog 100005 vers 3 prot UDP port 51873
mount.nfs: mount(2): Invalid argument
mount.nfs: an incorrect mount option was specified
** Package changed: nfs-utils (Ubuntu) => linux (Ubuntu)
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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
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