Further investigation and a related Debian bug report (#1082498) suggest that the problem is likely due to an inconsistency in the base-files package. Its postinst script migrates files from legacy locations (/var/run and /var/lock) to modern ones (/run and /run/lock). This migration process can occur during the live image build, leaving files permanently behind in the /run directory, which should be empty at the start of the boot process.
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1082498 ** Also affects: base-files (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Debcrafters packages, which is subscribed to base-files in Ubuntu. https://bugs.launchpad.net/bugs/2122474 Title: Directory /run contains unexpected files and directories in the live image, causing potential issues Status in Ubuntu: New Status in base-files package in Ubuntu: New Bug description: Description of the Bug's Symptoms When booting into the Ubuntu 25.04 live image, it has been observed that the /run directory is not empty. The directory is intended for temporary files and should be empty at boot time. This suggests an error in the live image creation process, where files are left behind in the directory. This can also lead to different symptoms depending on the system's configuration, such as systemd's run-lock.mount warning: Directory /run/lock to mount over is not empty, mounting anyway. The occurrence of this warning is not consistent across all environments, but it is a direct consequence of the /run/lock subdirectory not being empty. How to Repeat the Problem Boot the computer using the Ubuntu live image. Open a terminal in the live environment. The live system's /run directory is already mounted in RAM. To access the original contents of the / root directory, you need to create a new mount point and use the mount --bind command. Run the following commands: sudo mkdir /mnt/root sudo mount --bind / /mnt/root sudo ls -la /mnt/root/run Expected Outcome: The ls -la /mnt/root/run command should show an empty directory (only . and .. files). Actual Outcome: The directory contains one or more files or subdirectories that were left behind in the live image. Environment Details Ubuntu version: 25.04, 25.10 Environment: Live image Tested Versions: 25.04 Desktop, 25.10 Desktop, 25.10 Server To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/2122474/+subscriptions -- Mailing list: https://launchpad.net/~debcrafters-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~debcrafters-packages More help : https://help.launchpad.net/ListHelp
