** Tags added: fr-2591 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1979952
Title: Bind mount to NFS mount fails on Ubuntu 22.04 Status in systemd: Unknown Status in systemd package in Ubuntu: Triaged Status in systemd source package in Jammy: New Status in systemd source package in Kinetic: Triaged Bug description: I have the following setup: - /data is an NFS mount. - /home is a bind mount to /data/home. Configured in /etc/fstab with these lines: $FILE_SERVER:/data /data nfs defaults 0 0 /data/home /home none bind,_netdev,x-systemd.requires-mounts-for=/data 0 0 This has worked with the same configuration for me on at least Ubuntu 18.04 and Ubuntu 20.04, but on Ubuntu 22.04 the mount of /home fails when attempted by systemd. So not only is /home not mounted after boot, but also when I run "sudo systemctl start home.mount", it fails. The journal entries are this: sudo[1316]: wendler : TTY=pts/0 ; PWD=/home/wendler ; USER=root ; COMMAND=/usr/bin/systemctl start home.mount sudo[1316]: pam_unix(sudo:session): session opened for user root(uid=0) by wendler(uid=1000) systemd[1]: home.mount: Directory /home to mount over is not empty, mounting anyway. systemd[1]: home.mount: Failed to make bind mount source '/data/home': Permission denied systemd[1]: home.mount: Failed to run 'mount' task: Permission denied systemd[1]: home.mount: Failed with result 'resources'. systemd[1]: Failed to mount /home. However, when I run "sudo mount /home" it works. Now the weird thing is that after I have mounted /home manually once and unmounted it again, then "sudo systemctl start home.mount" suddenly also works! But of course only until the next reboot. And even if I just do "ls /data" once (either as root or as my user), it also makes "sudo systemctl start home.mount" start working! To be fully clear: - Booting the system (/home fails to mount) - sudo systemctl start home.mount # fails - sudo ls /data # shows correct output - sudo systemctl start home.mount # works! Additional information: The NFS export for /data has root_squash set and if I remove this option, the bind mount of /home works as it should. However, both /data and /data/home have mode rwxr-xr-x, so root is able to enter and read these directories even despite root_squash. It is not a network or mount-order problem. Not only is the bind mount to /home correctly attempted after /data is mounted during boot, remember that the bind mount also fails when I try it with "sudo systemctl start home.mount" minutes afterwards. Versions (system is a recent installation with all updates applied): - Ubuntu 22.04 - Linux 5.15.0-40-generic - systemd 249.11-0ubuntu3.3 - util-linux 2.37.2-4ubuntu3 This appears on both Ubuntu 22.04 machines that I have (a hardware machine and a VM). To manage notifications about this bug go to: https://bugs.launchpad.net/systemd/+bug/1979952/+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
