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FS#73860 - Linux i5 5.16.10-arch1-1 kernel: NFS don't mount anymore

Attached to Project: Arch Linux
Opened by lucas (acul71) - Friday, 18 February 2022, 13:12 GMT
Last edited by Jan Alexander Steffens (heftig) - Friday, 25 February 2022, 01:39 GMT
Task Type Bug Report
Category Packages: Core
Status Closed
Assigned To Andreas Radke (AndyRTR)
Jan Alexander Steffens (heftig)
Architecture x86_64
Severity High
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 4
Private No


With Linux i5 5.16.10-arch1-1 kernel NFS don't mount anymore

Additional info:
* package version(s)
linux 5.16.10.arch1-1
* config and/or log files etc.
# fred (qnap)
fred:/Multimedia /mnt/Multimedia nfs vers=4,nolock,nofail,noauto,_netdev,x-systemd.automount 0 0

* link to upstream bug report, if any

Steps to reproduce:
[root@i5 ~]# mount -v /mnt/Multimedia
mount.nfs: timeout set for Fri Feb 18 13:59:33 2022
mount.nfs: trying text-based options 'nolock,vers=4.2,addr=,clientaddr='
mount.nfs: mount(2): Protocol not supported
mount.nfs: trying text-based options 'nolock,vers=4,minorversion=1,addr=,clientaddr='

systemd[1]: Failed to mount /mnt/Multimedia.
This task depends upon

Closed by  Jan Alexander Steffens (heftig)
Friday, 25 February 2022, 01:39 GMT
Reason for closing:  Fixed
Additional comments about closing:  5.16.11.arch1-1
Comment by j (BottleNeck) - Friday, 18 February 2022, 13:48 GMT
for info:

Seems to also affect linux-lts 5.15.24-1-lts
I run it next to 5.16.10.arch1-1. I have the problem on both kernels.
Comment by Andreas Radke (AndyRTR) - Friday, 18 February 2022, 18:13 GMT
mount.nfs: mount(2): Protocol not supported

Do you still use NFS v2? That no more supported for good reasons in nfs-utils.
Comment by Christian S. (pepper) - Friday, 18 February 2022, 19:07 GMT
same here... nfs server is a QNAP device. I don't know if it's relevant.
I didn't any error messages.
Comment by Andreas Radke (AndyRTR) - Friday, 18 February 2022, 19:25 GMT
Probably a duplicate of  FS#73838 . NFS v3+v4 should keep working and not report "Protocol not supported".
Comment by j (BottleNeck) - Saturday, 19 February 2022, 05:28 GMT
after some troubleshooting, trouble exists with V4 but NOT V3.
Comment by Brian BIdulock (bidulock) - Sunday, 20 February 2022, 00:38 GMT
Also here both kernels NFSv4 QNAP.
But just hangs instead of "protocol not supported".
Comment by Per Osbeck (perosb) - Sunday, 20 February 2022, 08:51 GMT
Same issue here with 5.16.10. I cannot seem to find any reports upstream on this..

5.16.9.arch.1 is working fine. (
Comment by Andreas Radke (AndyRTR) - Sunday, 20 February 2022, 09:00 GMT
If upstream is not aware of this issue it won't get fixed magically. So please post this to the stable/nfs mailing list + kernel bugzilla.
Comment by Andreas Radke (AndyRTR) - Monday, 21 February 2022, 06:50 GMT
Please try 5.15.24-2 from testing repo.
Comment by Brian BIdulock (bidulock) - Tuesday, 22 February 2022, 09:32 GMT
Yes, 5.15.24-2 works! Thank you! Please apply also to 5.16.10.
Comment by lucas (acul71) - Friday, 25 February 2022, 01:13 GMT
With Linux i5 5.16.11-arch1-1 It mounts again with version 4.