This bug was fixed in the package nfs-utils - 1:1.3.4-2.5ubuntu3.7
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nfs-utils (1:1.3.4-2.5ubuntu3.7) focal; urgency=medium
* Fix minor version parsing when '-t nfs4' and '-o vers=4.x' or
'-o vers=4,minorversion=x' are all used together. This fixes a
regression caused by
Your verification showed "permission denied" when NFSv3 was attempted,
which I expect when -t nfs4 is used, but not in the -t nfs case, or when
"-t" is not used at all.
Since this is a quick check, I ran these tests:
root@j-nfs-server:~# cat /proc/fs/nfsd/versions
-2 +3 -4 -4.0 -4.1 -4.2
This fixes my issue! https://bugs.launchpad.net/ubuntu/+source/util-
linux/+bug/2063381
nfs-common/focal-proposed,now 1:1.3.4-2.5ubuntu3.7 amd64 [installed]
Installed from proposed repo.
Mounted via pam_mount upon ssh login using krb5p; NFSv4 successful mount
with vers=4.0 which I could not do
Performing verification for Focal.
I started two VMs, one Jammy, which is the nfs server, and one Focal,
which is the client. I used the instructions in the testcase sections of
this bug, and also bug 2049262.
The Focal VM has nfs-common 1:1.3.4-2.5ubuntu3.6 from -updates.
Let's try the
Thanks for the detailed -o vers=x.y tests. I think we are just missing
the default case, with nothing fancy specified in the command-line.
Please also include in the test a normal without-options mount attempt,
i.e., the default.
Something like a series of these, verifying which version it ended
Thanks for the revised debdiff, Matthew! And nice work on the extensive
sanity check for the version laddering.
The new debdiff looks good, I've sponsored it for Focal. Thanks!
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Thanks for pointing out the missing patch Heitor. I was indeed missing
it.
Please review and sponsor the V2 debdiff.
Thanks,
Matthew
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https://bugs.launchpad.net/bugs/2059197
Title:
Sanity testing the test package:
https://launchpad.net/~mruffell/+archive/ubuntu/lp2059197-test
nfs-common 1:1.3.4-2.5ubuntu3.6+lp2059197v20240411b1
Testcase for this bug, i.e. the regression.
$ sudo mount -t nfs4 -o vers=4.2 -vvv jammy-nfs-server:/ /mnt
mount.nfs4: timeout set for Thu Apr 11
Attached is a new debdiff which includes the missing patch. I did
another look upstream, but I think we are okay now.
** Patch added: "Debdiff for nfs-utils on Focal V2"
https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/2059197/+attachment/5763564/+files/lp2059197_focal_V2.debdiff
**
** Patch removed: "Debdiff for nfs-utils on Focal"
https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/2059197/+attachment/5761398/+files/lp2059197_focal.debdiff
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Hi Matthew,
thanks for the quick follow-up on the regression! Being the sponsor for
the original patch in bug 2049262, I wanted to give this one some deeper
attention. Version parsing seems to have been a difficult area upstream,
with several follow-up fixes indeed, so thank you for detailing the
Hi Matthew,
Its no problem, I can see how changing the version negotiation would be
tricky, thanks for looking at it so quickly.
Using the workaround and everything working correctly, no dramas
Thanks again,
Jeffrey
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Hi Jeff,
Again, I apologise for introducing this regression, but we are on our
way to getting this fixed.
The fixes are:
commit 1e3ca7fe199531a372bb8e1c1033d8973097be50
Author: NeilBrown
Date: Wed Jul 26 13:47:42 2017 -0400
Subject: mount: move handling of "-t nfs4" into nfs_nfs_version()
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