# What is going on ? NFS 4.2 - Does not mount yet RH 8 does : mount.nfs: mount(2): Protocol not supported
**URL:** https://forums.rockylinux.org/t/what-is-going-on-nfs-4-2-does-not-mount-yet-rh-8-does-mount-nfs-mount-2-protocol-not-supported/12960
**Category:** Rocky Linux Help & Support
**Tags:** rocky-linux-9, unsupported
**Created:** [February 21, 2024, 5:40pm UTC](https://forums.rockylinux.org/t/what-is-going-on-nfs-4-2-does-not-mount-yet-rh-8-does-mount-nfs-mount-2-protocol-not-supported/12960 "2024-02-21T17:40:13Z")
**Posts on this page:** 11
**Page:** 1
### Author:  [@buzzable](https://forums.rockylinux.org/u/buzzable)
#### Post date: [February 21, 2024, 5:40pm UTC](https://forums.rockylinux.org/t/what-is-going-on-nfs-4-2-does-not-mount-yet-rh-8-does-mount-nfs-mount-2-protocol-not-supported/12960/1 "2024-02-21T17:40:14Z")
I am running some benchmarks on RL
Linux redhat8 4.18.0-348.el8.x86\_64 #1 SMP Mon Oct 4 12:17:22 EDT 2021 x86\_64 x86\_64 x86\_64 GNU/Linux
Vs
Linux rocky9 5.14.0-362.13.1.el9\_3.x86\_64 #1 SMP PREEMPT\_DYNAMIC Wed Dec 13 14:07:45 UTC 2023 x86\_64 x86\_64 x86\_64 GNU/Linux
Simple nfsV4.2 flex files layout and nconnect super speed pNFS -
[root@redhat8 ~]# mount -vvv -t nfs -o nconnect=8 anvilcubepnfs:/testpnfs /mnt/testpnfs
mount.nfs: timeout set for Wed Feb 21 17:38:52 2024
mount.nfs: trying text-based options ‘nconnect=8,vers=4.2,addr=192.168.10.128,clientaddr=192.168.10.204’
Works 🙂
now on Super Rockjy
mount.nfs: timeout set for Wed Feb 21 17:40:31 2024
mount.nfs: trying text-based options ‘nconnect=8,vers=4.2,addr=192.168.10.128,clientaddr=192.168.10.199’
mount.nfs: mount(2): Protocol not supported
Are we ever going to get 4.2 into the kernel?
Any ideas?
---
### Author:  [@label](https://forums.rockylinux.org/u/label)
#### Post date: [February 21, 2024, 5:54pm UTC](https://forums.rockylinux.org/t/what-is-going-on-nfs-4-2-does-not-mount-yet-rh-8-does-mount-nfs-mount-2-protocol-not-supported/12960/2 "2024-02-21T17:54:00Z")
> [@buzzable](#):
>
> Are we ever going to get 4.2 into the kernel?
```auto
[root@xmpp01 ~]# mount -vvv -t nfs router.angelsofclockwork.net:/export/test /mnt
mount.nfs: timeout set for Wed Feb 21 10:50:39 2024
mount.nfs: trying text-based options 'vers=4.2,addr=2001:470:1f19:138::1,clientaddr=2001:470:1f19:138::30'
[root@xmpp01 ~]# mount | grep export/test
router.angelsofclockwork.net:/export/test on /mnt type nfs4 (rw,relatime,vers=4.2,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp6,timeo=600,retrans=2,sec=sys,clientaddr=2001:470:1f19:138::30,local_lock=none,addr=2001:470:1f19:138::1)
[root@xmpp01 ~]# uname -a
Linux xmpp01.angelsofclockwork.net 5.14.0-362.18.1.el9_3.0.1.x86_64 #1 SMP PREEMPT_DYNAMIC Sun Feb 11 13:49:23 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
```
“4.2” is in the kernel and works as intended in my lab. I would check to make sure you have all the right packages installed. You may also want to verify `dmesg`, perhaps `showmount -e`, `rpcinfo`. DNS may also be a factor, but it’s rare.
---
### Author:  [@iwalker](https://forums.rockylinux.org/u/iwalker)
#### Post date: [February 21, 2024, 6:35pm UTC](https://forums.rockylinux.org/t/what-is-going-on-nfs-4-2-does-not-mount-yet-rh-8-does-mount-nfs-mount-2-protocol-not-supported/12960/3 "2024-02-21T18:35:40Z")
If firewalld is running, then the ports will also need to be opened to allow incoming NFS connections.
---
### Author:  [@buzzable](https://forums.rockylinux.org/u/buzzable)
#### Post date: [February 22, 2024, 4:03am UTC](https://forums.rockylinux.org/t/what-is-going-on-nfs-4-2-does-not-mount-yet-rh-8-does-mount-nfs-mount-2-protocol-not-supported/12960/4 "2024-02-22T04:03:09Z")
Thats a great call but no 🙂
firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; preset: enabled)
Active: inactive (dead)
Docs: man:firewalld(1)
---
### Author:  [@buzzable](https://forums.rockylinux.org/u/buzzable)
#### Post date: [February 22, 2024, 4:11am UTC](https://forums.rockylinux.org/t/what-is-going-on-nfs-4-2-does-not-mount-yet-rh-8-does-mount-nfs-mount-2-protocol-not-supported/12960/6 "2024-02-22T04:11:38Z")
Thanks for the quick reply 100% firewalld is off 🙂 and it will mount old school NFS v3 tcp mode. and here are the packages.dnf install nfs\*
Last metadata expiration check: 0:00:51 ago on Thu 22 Feb 2024 04:08:22 GMT.
Package nfs-utils-1:2.5.4-20.el9.x86\_64 is already installed.
Package nfs-utils-coreos-1:2.5.4-20.el9.x86\_64 is already installed.
Package nfs4-acl-tools-0.4.2-2.el9.x86\_64 is already installed.
Package nfsv4-client-utils-1:2.5.4-20.el9.x86\_64 is already installed.
Dependencies resolved.
---
### Author:  [@buzzable](https://forums.rockylinux.org/u/buzzable)
#### Post date: [February 22, 2024, 4:33am UTC](https://forums.rockylinux.org/t/what-is-going-on-nfs-4-2-does-not-mount-yet-rh-8-does-mount-nfs-mount-2-protocol-not-supported/12960/7 "2024-02-22T04:33:54Z")
[mark@rocky92 ~]$ sudo mount -vvv -o nfsvers=3 nfs:/volume1/externalnfs /mnt/externalnfs/
mount.nfs: timeout set for Thu Feb 22 04:35:06 2024
mount.nfs: trying text-based options ‘nfsvers=3,addr=192.168.10.100’
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 192.168.10.100 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.10.100 prog 100005 vers 3 prot UDP port 892
[mark@rocky92 ~]$ df
Filesystem 1K-blocks Used Available Use% Mounted on
devtmpfs 4096 0 4096 0% /dev
tmpfs 3928380 0 3928380 0% /dev/shm
tmpfs 1571356 9376 1561980 1% /run
/dev/mapper/rl-root 28463104 5901784 22561320 21% /
/dev/sda2 983040 516564 466476 53% /boot
/dev/sda1 613184 7148 606036 2% /boot/efi
tmpfs 785676 52 785624 1% /run/user/42
tmpfs 785676 36 785640 1% /run/user/1000
nfs:/volume1/externalnfs 1019719296 682937728 336781568 67% /mnt/externalnfs
---
### Author:  [@buzzable](https://forums.rockylinux.org/u/buzzable)
#### Post date: [February 22, 2024, 4:38am UTC](https://forums.rockylinux.org/t/what-is-going-on-nfs-4-2-does-not-mount-yet-rh-8-does-mount-nfs-mount-2-protocol-not-supported/12960/8 "2024-02-22T04:38:42Z")
showmount -e anvilcubepnfs
Export list for anvilcubepnfs:
/ (everyone)
/testpnfs (everyone)
and
sudo mount -vvv anvilcubepnfs:/ /mnt/root/
mount.nfs: timeout set for Thu Feb 22 04:39:36 2024
mount.nfs: trying text-based options ‘vers=4.2,addr=192.168.10.128,clientaddr=192.168.10.213’
mount.nfs: mount(2): Protocol not supported
mount.nfs: trying text-based options ‘vers=4,minorversion=1,addr=192.168.10.128,clientaddr=192.168.10.213’
mount.nfs: mount(2): Protocol not supported
mount.nfs: trying text-based options ‘vers=4,addr=192.168.10.128,clientaddr=192.168.10.213’
mount.nfs: mount(2): Protocol not supported
mount.nfs: Protocol not supported
[mark@rocky92 ~]$ df
Filesystem 1K-blocks Used Available Use% Mounted on
devtmpfs 4096 0 4096 0% /dev
tmpfs 3928380 0 3928380 0% /dev/shm
tmpfs 1571356 9376 1561980 1% /run
/dev/mapper/rl-root 28463104 5901788 22561316 21% /
/dev/sda2 983040 516564 466476 53% /boot
/dev/sda1 613184 7148 606036 2% /boot/efi
tmpfs 785676 52 785624 1% /run/user/42
tmpfs 785676 36 785640 1% /run/user/1000
nfs:/volume1/externalnfs 1019719296 682937728 336781568 67% /mnt/externalnfs
---
### Author:  [@buzzable](https://forums.rockylinux.org/u/buzzable)
#### Post date: [February 22, 2024, 4:43am UTC](https://forums.rockylinux.org/t/what-is-going-on-nfs-4-2-does-not-mount-yet-rh-8-does-mount-nfs-mount-2-protocol-not-supported/12960/9 "2024-02-22T04:43:19Z")
nothing in dmesg
[36.190758] FS-Cache: Loaded
[36.232128] Key type dns\_resolver registered
[36.314870] NFS: Registering the id\_resolver key type
[36.314876] Key type id\_resolver registered
[36.314877] Key type id\_legacy registered
---
### Author:  [@buzzable](https://forums.rockylinux.org/u/buzzable)
#### Post date: [February 22, 2024, 5:05am UTC](https://forums.rockylinux.org/t/what-is-going-on-nfs-4-2-does-not-mount-yet-rh-8-does-mount-nfs-mount-2-protocol-not-supported/12960/10 "2024-02-22T05:05:26Z")
Back on rh all is well…
[root@redhat8 ~]# mount -vvvvv -t nfs -o nconnect=8 anvilcubepnfs:/testpnfs /mnt/testpnfs
mount.nfs: timeout set for Thu Feb 22 05:03:55 2024
mount.nfs: trying text-based options ‘nconnect=8,vers=4.2,addr=192.168.10.128,clientaddr=192.168.10.204’
[root@redhat8 ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
devtmpfs 900588 0 900588 0% /dev
tmpfs 930088 0 930088 0% /dev/shm
tmpfs 930088 9276 920812 1% /run
tmpfs 930088 0 930088 0% /sys/fs/cgroup
/dev/mapper/rhel\_redhat8-root 13420544 4682948 8737596 35% /
/dev/sda2 1038336 256984 781352 25% /boot
/dev/sda1 613184 5896 607288 1% /boot/efi
tmpfs 186016 12 186004 1% /run/user/42
tmpfs 186016 0 186016 0% /run/user/0
anvilcubepnfs:/testpnfs 83870720 19922944 63947776 24% /mnt/testpnfs
---
### Author:  [@buzzable](https://forums.rockylinux.org/u/buzzable)
#### Post date: [February 24, 2024, 10:32am UTC](https://forums.rockylinux.org/t/what-is-going-on-nfs-4-2-does-not-mount-yet-rh-8-does-mount-nfs-mount-2-protocol-not-supported/12960/12 "2024-02-24T10:32:57Z")
**Rebooted swap the NIC driver and WOW… Rocky on pNFS 4.2 Amazing.**
This is on Hammerspace Hyperscale NAS… One of the fastest (no client) NAS presentations on the planet… Love it!! No client and all in Rocky Kernal : VERY COOL… FLEX FILES LAYOUT ON ROCKY…
Here is my fstab file
anvilcubepnfs:/ /mnt/root nfs defaults,port=20491,vers=4.2,\_netdev,nconnect=8,noauto 0 0
Stats for anvilcubepnfs:/ mounted on /mnt/root:
NFS mount options: rw,vers=4.2,rsize=1048576,wsize=1048576,namlen=255,acregmin=3,acregmax=60,acdirmin=30,acdirmax=60,hard,proto=tcp,nconnect=8,port=20491,timeo=600,retrans=2,sec=sys,clientaddr=192.168.10.199,local\_lock=none
NFS mount age: 0:00:17
NFS server capabilities: caps=0xeffbc0ff,wtmult=512,dtsize=1048576,bsize=0,namlen=255
NFSv4 capability flags: bm0=0xffffbfff,bm1=0x4cfffe3e,bm2=0x801,acl=0xf,sessions,pnfs=LAYOUT\_FLEX\_FILES,lease\_time=45,lease\_expired=0
NFS security flavor: 1 pseudoflavor: 0
NFS byte counts:
applications read 0 bytes via read(2)
applications wrote 0 bytes via write(2)
applications read 0 bytes via O\_DIRECT read(2)
applications wrote 0 bytes via O\_DIRECT write(2)
client read 0 bytes via NFS READ
client wrote 0 bytes via NFS WRITE
RPC statistics:
2 RPC requests sent, 2 RPC replies received (0 XIDs not found)
average backlog queue length: 0
---
### Author:  [@system](https://forums.rockylinux.org/u/system)
#### Post date: [April 24, 2024, 10:33am UTC](https://forums.rockylinux.org/t/what-is-going-on-nfs-4-2-does-not-mount-yet-rh-8-does-mount-nfs-mount-2-protocol-not-supported/12960/13 "2024-04-24T10:33:38Z")
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