I use genkernel to only build the initramfs image. I have a script that wraps around genkernel to create the initramfs structure with binaries and libraries and a couple specific kernel modules. Before I run my script, I've already installed my kernel modules into '/lib/modules/${KV}'. When that's all done, I call genkernel like this: genkernel \ --no-mountboot \ --kernel-config=/boot/config \ --linuxrc=/boot/install.custom.linuxrc \ --initramfs-overlay=$ol \ --no-install \ --lvm \ --loglevel=2 \ initramfs It outputs a file here: /var/tmp/genkernel/initramfs-* My script then moves that file into position under /boot. This works fine on sys-kernel/genkernel-4.0.10. It is broken on sys-kernel/genkernel-4.1.2-r3. The error output I get with this version is: ERROR: '/var/tmp/genkernel/gk_GcnixHcg/mod_prefix/lib/modules/5.4.80-gentoo-r1-20241110-194244' does not exist! Did you forget to compile kernel before building initramfs? If you know what you are doing please set '--no-ramdisk-modules'. I think this commit is responsible: febeae936c626eb4c0a44654cda2a6351671098b It defines 'KERNEL_MODULES_PREFIX="${TEMP}/mod_prefix"', where KERNEL_MODULES_PREFIX was previously unset. Then in 'gen_initramfs.sh' / append_modules(), starting at line 1678: --------- local modules_dstdir="${TDIR}/lib/modules/${KV}" local modules_srcdir="/lib/modules/${KV}" print_info 2 "$(get_indent 2)modules: >> Copying modules to initramfs ..." if [ -n "${KERNEL_MODULES_PREFIX}" ] then modules_srcdir="${KERNEL_MODULES_PREFIX%/}${modules_srcdir}" fi if [ ! -d "${modules_srcdir}" ] then error_message="'${modules_srcdir}' does not exist! Did you forget" error_message+=" to compile kernel before building initramfs?" error_message+=" If you know what you are doing please set '--no-ramdisk-modules'." gen_die "${error_message}" fi --------- So the correct modules_srcdir gets changed to something under '/var/tmp/genkernel' and then fails because it doesn't exist. The same pieces of code exist at version 4.3.16 (0bccb338abf8f986f94b2bd5c2df5ba4c566606d). Reproducible: Always Steps to Reproduce: 1. Build an install the kernel using make && make modules_install && make install 2. Run genkernel like this: genkernel \ --no-mountboot \ --kernel-config=/boot/config \ --linuxrc=/boot/install.custom.linuxrc \ --initramfs-overlay=$ol \ --no-install \ --lvm \ --loglevel=2 \ initramfs (You may not even need --linuxrc and --initramfs-overlay and --lvm options). Actual Results: The error is produced: ERROR: '/var/tmp/genkernel/gk_GcnixHcg/mod_prefix/lib/modules/5.4.80-gentoo-r1-20241110-194244' does not exist! Did you forget to compile kernel before building initramfs? If you know what you are doing please set '--no-ramdisk-modules'. Expected Results: The initramfs image is created under /var/tmp/genkernel and ready to be manually moved.
commit febeae936c626eb4c0a44654cda2a6351671098b Author: Thomas Deutschmann <whissi@gentoo.org> Date: Mon Aug 3 00:01:21 2020 +0200 gen_determineargs.sh: determine_real_args(): Set KERNEL_MODULES_PREFIX to temporary location when --no-install is set This will ensure that we won't install anything on user's system when --no-install was set. While here, make use of expand_file() for --kernel-modules-prefix. Bug: https://bugs.gentoo.org/505810 Signed-off-by: Thomas Deutschmann <whissi@gentoo.org>
