These messages appear to be coming from finalrd, and leading to an actual unclean shutdown.
-- 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/1920107 Title: Failed messages of sd-umoun show with reboot/shutdown Status in snapd: New Status in systemd package in Ubuntu: New Bug description: We were seeing the same sequence of errors heppened on KVM and ARM device running UC20: """ [12450.684692] sd-umoun[5922]: Failed to unmount /oldroot: Device or resource busy [12450.693515] sd-remou[5923]: Failed to remount '/oldroot/run/mnt/data' read-only: Device or resource busy [12450.704374] sd-umoun[5924]: Failed to unmount /oldroot/run/mnt/data: Device or resource busy [12450.714225] sd-umoun[5925]: Failed to unmount /oldroot/run: Device or resource busy [12450.726073] shutdown[1]: Could not detach loopback /dev/loop0: Device or resource busy [12450.735481] shutdown[1]: Failed to finalize file systems, loop devices, ignoring [12451.129165] reboot: Power down """ [Steps to reproduce] $ sudo poweroff or $ sudo reboot There are few issues may be relevant but the PR listed on below was not useful for this case. https://github.com/systemd/systemd/issues/14298 https://github.com/systemd/systemd/issues/14981 https://github.com/systemd/systemd/pull/15566 To manage notifications about this bug go to: https://bugs.launchpad.net/snapd/+bug/1920107/+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
