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flatcar-scripts/changelog/bugfixes/2023-11-29-recreate-etc-files.md
Kai Lueke 5590da400e build_image_util: Store path list for recreating tmpfiles rules 
The removal of files in the overlay present in the lowerdir creates
whiteout entries that mask the lowerdir entries. For those files that
have a tmpfile rule for creation, a reboot would cause the file to be
created in the upperdir, meaning this file is not updated from the
lowerdir when it changes. In addition we have filtered out some tmpfile
rules that caused upcopies (symlinks and directories) which meant that
removing the /etc/resolv.conf symlink didn't bring it back after reboot.
To make files from the lowerdir show up if they have a tmpfile rule that
normally would recreate them we keep a list of whiteout entries that we
clean up on boot. This also prevents freezing files because
systemd-tmpfiles does not need to recreate them in the upperdir.
2023-11-30 11:57:27 +01:00

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  • Deleted files in /etc that have a tmpfiles rule that normally would recreate them will now show up again through the /etc lowerdir (Flatcar#1265, bootengine#79)