Please do test the work-around. If indeed NFSv4 solves your overlayfs problem then that would be another reason for fixing nfsmount.
We can carry Ubuntu specific fixes if for some reason Debian doesn't want them but the preferred way is obviously to fix it in Debian so that it tickles down naturally to Ubuntu (and other Debian based distros). I'm looking at it atm but NFS is not my strong suit :-) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to klibc in Ubuntu. https://bugs.launchpad.net/bugs/1954716 Title: rpi nfsroot vers=4 not supported anymore? Status in klibc package in Ubuntu: Confirmed Status in linux-raspi package in Ubuntu: Invalid Bug description: I'm running `5.13.0-1011-raspi #13-Ubuntu SMP PREEMPT Fri Nov 19 18:40:23 UTC 2021 aarch64 aarch64 aarch64 GNU/Linux` and have successfully set up netbooting on my RPi 4B (4GB). When I do not specify a `vers=` in cmdline.txt, NFS version 3 is used. I'd like to move to version 4, but unlike the setup described in https://forums.raspberrypi.com/viewtopic.php?p=1751741#p1751741, I cannot get `vers=4` (or any sub-version to work): the console logs `invalid value for vers.` for whatever I try. Current working cmdline.txt: ``` dwc_otg.lpm_enable=0 console=serial0,115200 console=tty1 root=/dev/nfs nfsroot=192.168.3.101:/srv/pinet/root,tcp ro ip=dhcp rootwait fixrtc splash ``` Nonworking cmdline.txt: ``` dwc_otg.lpm_enable=0 console=serial0,115200 console=tty1 root=/dev/nfs nfsroot=192.168.3.101:/srv/pinet/root,tcp,vers=4 ro ip=dhcp rootwait fixrtc splash ``` To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/klibc/+bug/1954716/+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