Still reproduces on Ubuntu 26.04 LTS (grub2 [version], util-linux [version], kernel 7.0.0-15). After editing /etc/fstab, update-grub emitted the same find error and produced a grub.cfg with zero Linux menu entries (only memtest and UEFI Firmware Settings). Rebooting would have left the system unbootable without manual GRUB intervention. Running systemctl daemon-reload and rerunning update-grub restored the entries. Since kernel package upgrades invoke update-grub automatically, any fstab edit followed by an unattended kernel upgrade can silently break boot. Suggest raising importance.
~ $ lsb_release -d; uname -r; dpkg-query -W grub-common grub2-common util-linux systemd Description: Ubuntu 26.04 LTS 7.0.0-15-generic grub-common 2.14-2ubuntu2 grub2-common 2.14-2ubuntu2 systemd 259.5-0ubuntu3 util-linux 2.41.3-3ubuntu2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2110050 Title: grub-mkconfig fails with ZFS when /etc/fstab was touched: find: ‘mount: (hint) your fstab has been modified, but systemd still uses[…]/tmp/zfsmnt.2a85H0/boot’: No such file or directory To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/2110050/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
