Public bug reported: When specifying vers=4.0 or nfsvers=4.0 in NFSv4 mount options, the client ends up using version 4.2 instead. This option seems to be ignored.
This happens with pam_mount and manual mount. We have been using pam_mount for years with the option vers=4.0, but now it appears to be broken. Just recently noticed this is happening while troubleshooting root causes of some other issues on our servers. Test: mounting manually with option: minorversion=0, the client does not mount, no errors are seen with -vvv, no errors in logs either, it just fails silently. With pam_mount this option fails as well but is logged as mount failed into auth.log ex: Apr 24 17:15:22 servername sshd[666278]: (pam_mount.c:522): mount of /mnt/nfs/home/admin_username failed I see that something similar was fixed in autofs, but this is not autofs related. https://bugs.launchpad.net/bugs/1818121 Found a similar [oracle] issue but cannot read it= https://support.oracle.com/knowledge/Oracle%20Linux%20and%20Virtualization/2528012_1.html --- Description: Ubuntu 20.04.6 LTS Release: 20.04 --- util-linux: Installed: 2.34-0.1ubuntu9.6 Candidate: 2.34-0.1ubuntu9.6 Version table: *** 2.34-0.1ubuntu9.6 500 500 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 500 http://us.archive.ubuntu.com/ubuntu focal-security/main amd64 Packages 100 /var/lib/dpkg/status 2.34-0.1ubuntu9 500 500 http://us.archive.ubuntu.com/ubuntu focal/main amd64 Packages mount: Installed: 2.34-0.1ubuntu9.6 Candidate: 2.34-0.1ubuntu9.6 Version table: *** 2.34-0.1ubuntu9.6 500 500 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 500 http://us.archive.ubuntu.com/ubuntu focal-security/main amd64 Packages 100 /var/lib/dpkg/status 2.34-0.1ubuntu9 500 500 http://us.archive.ubuntu.com/ubuntu focal/main amd64 Packages nfs-common: Installed: 1:1.3.4-2.5ubuntu3.6 Candidate: 1:1.3.4-2.5ubuntu3.6 Version table: *** 1:1.3.4-2.5ubuntu3.6 500 500 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 100 /var/lib/dpkg/status 1:1.3.4-2.5ubuntu3.3 500 500 http://us.archive.ubuntu.com/ubuntu focal-security/main amd64 Packages 1:1.3.4-2.5ubuntu3 500 500 http://us.archive.ubuntu.com/ubuntu focal/main amd64 Packages ** Affects: util-linux (Ubuntu) Importance: Undecided Status: New ** Tags: mount nfs ** Package changed: autofs (Ubuntu) => util-linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to util-linux in Ubuntu. https://bugs.launchpad.net/bugs/2063381 Title: NFS Client can't mount via NFS version 4.0 Status in util-linux package in Ubuntu: New Bug description: When specifying vers=4.0 or nfsvers=4.0 in NFSv4 mount options, the client ends up using version 4.2 instead. This option seems to be ignored. This happens with pam_mount and manual mount. We have been using pam_mount for years with the option vers=4.0, but now it appears to be broken. Just recently noticed this is happening while troubleshooting root causes of some other issues on our servers. Test: mounting manually with option: minorversion=0, the client does not mount, no errors are seen with -vvv, no errors in logs either, it just fails silently. With pam_mount this option fails as well but is logged as mount failed into auth.log ex: Apr 24 17:15:22 servername sshd[666278]: (pam_mount.c:522): mount of /mnt/nfs/home/admin_username failed I see that something similar was fixed in autofs, but this is not autofs related. https://bugs.launchpad.net/bugs/1818121 Found a similar [oracle] issue but cannot read it= https://support.oracle.com/knowledge/Oracle%20Linux%20and%20Virtualization/2528012_1.html --- Description: Ubuntu 20.04.6 LTS Release: 20.04 --- util-linux: Installed: 2.34-0.1ubuntu9.6 Candidate: 2.34-0.1ubuntu9.6 Version table: *** 2.34-0.1ubuntu9.6 500 500 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 500 http://us.archive.ubuntu.com/ubuntu focal-security/main amd64 Packages 100 /var/lib/dpkg/status 2.34-0.1ubuntu9 500 500 http://us.archive.ubuntu.com/ubuntu focal/main amd64 Packages mount: Installed: 2.34-0.1ubuntu9.6 Candidate: 2.34-0.1ubuntu9.6 Version table: *** 2.34-0.1ubuntu9.6 500 500 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 500 http://us.archive.ubuntu.com/ubuntu focal-security/main amd64 Packages 100 /var/lib/dpkg/status 2.34-0.1ubuntu9 500 500 http://us.archive.ubuntu.com/ubuntu focal/main amd64 Packages nfs-common: Installed: 1:1.3.4-2.5ubuntu3.6 Candidate: 1:1.3.4-2.5ubuntu3.6 Version table: *** 1:1.3.4-2.5ubuntu3.6 500 500 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages 100 /var/lib/dpkg/status 1:1.3.4-2.5ubuntu3.3 500 500 http://us.archive.ubuntu.com/ubuntu focal-security/main amd64 Packages 1:1.3.4-2.5ubuntu3 500 500 http://us.archive.ubuntu.com/ubuntu focal/main amd64 Packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/2063381/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
