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Previously, probe_gpt_sector_size_mismatch() would bail out early when the GPT sector size matched the device sector size. However, some devices (e.g. certain CD-ROM drives) do not support kernel partition scanning even when sector sizes match. In that case, the kernel still cannot parse the partition table, and we need to set up a loop device to expose the partitions — just as we do for the sector size mismatch case. Check blockdev_partscan_enabled() when sector sizes match, and only skip the boot partition check if partition scanning is actually supported. Also rename the function, udev property, and log messages to reflect the broader scope: - probe_gpt_sector_size_mismatch() -> probe_gpt_boot_disk_needs_loop() - ID_PART_GPT_AUTO_ROOT_DISK_SECTOR_SIZE_MISMATCH -> ID_PART_GPT_AUTO_ROOT_DISK_NEEDS_LOOP
Files in this directory contain configuration for systemd-udevd.service, a daemon that manages symlinks to device nodes, permissions of devices nodes, emits device events for userspace, and renames network interfaces. See man:udev(7) for an overview of the configuration file format, and man:systemd-udevd.service(8) for a description of service itself. Use 'systemd-analyze cat-config udev/rules.d' to display the effective config.