On 24/02/2017 08:51 πμ, Linuxero wrote:
On 2017-02-23 20:08, Thanos Baloukas wrote:
On 23/02/2017 07:25 μμ, Thanos Baloukas wrote:
On 23/02/2017 02:59 μμ, Linuxero wrote:
Hi everybody;
I have finished the latest development systemd LFS book. I have NVME
disks in my machine and the LFS partition is a GUID one. I
configured my
kernel and it boot well if I compile the NVME drivers built-in.
However,
I wanted to compile NVME as loadable modules. I installed dracut and
tried to create an initrd. Actually, the initrd is well, but for some
strange reason I am always dropped to dracut emergency shell as the
partition can not be found.
Dracut version is 044. The emergency shell is unusable, as if the
system
were halted.
Any suggestion about dracut with LFS/BLFS?
Thanks in advance,
Are there any messages? Are the 'linux' and 'root=UUID='
entries in grub.cfg correct? Could it be that there is not
/etc/os-release? I recall that it would not switch root
if it did not exist.
You said you are using GUID (I'm getting that as GPT partition table).
I have no experience with GPT, sorry, the required root= entry
may differ. UUIDs may not be required, I mentioned that because
I'm using them in /etc/fstab and grub.cfg when booting with
an initramfs built with dracut.
--
Thanos
Thanks for your answers. It is GPT scheme that I am using. UUIDs, Labels
and everything is correct.
BTW; UUIDs work the same on GPT.
I guess that my problem is the following:
NVME modules are not loaded in initrd. Because; when I compile the
kernel with NVME built-in, I can boot without any problem. So it should
be something with initrd. I am new to dracut. I could write a hook or a
module, but I don't think that is necessary for my scenario. Am I right?
If someone has more experience with dracut and how to build initrd for
LFS using it; I'd appreciate any hint.
Thanks again
This is what I do when I want to boot LFS on other machines.
I get the kernel config from
https://www.archlinux.org/packages/core/x86_64/linux/
or
https://www.archlinux.org/packages/core/x86_64/linux-lts/
On these pages click 'Source Files'
The last kernel I built was 4.4.7-lts-x86_64 on lfs-7.9-rc2-systemd.
They are on 4.4.51 now.
pkgver=4.4.7
pkgtar=linux-${pkgver}.tar.xz
extraver="-lts-x86_64"
make mrproper
set EXTRAVERSION to $extraver in Makefile
cp -v /path/to/config_file .config
make oldconfig
Set
CONFIG_LOCALVERSION=""
# CONFIG_LOCALVERSION_AUTO is not set
make LANG=$LANG LC_ALL= menuconfig
make bzImage modules
make LOCALVERSION= INSTALL_MOD_PATH=${fakeroot} modules_install
# remove build and source links
rm -v ${fakeroot}/lib/modules/${pkgver}${extraver}/{source,build}
cp -v arch/x86/boot/bzImage /boot/vmlinuz-${pkgver}${extraver}
cp -v .config /boot/config-${pkgver}${extraver}
# remove the firmware and get the latest
rm -rf ${fakeroot}/lib/firmware
cd ${fakeroot}/lib
git clone
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git
mv -v linux-firmware firmware
rm -rf firmware/.git
# backup existing firmware
mkdir -pv /path/to/backup/firmware
mv -v /lib/firmware /path/to/backup/firmware
Place installation on /
I tried dracut-044 but did not manage to create a working initramfs.
Did not look for the cause. No time, other priorities.
Tried dracut-041 that had worked in the past and succeeded. Built with
make prefix=/usr \
sysconfdir=/etc \
bindir=/usr/bin \
sbindir=/usr/bin \
libdir=/usr/lib \
loginstall=/var/log/dracut
make DESTDIR=${fakeroot} \
prefix=/usr \
sysconfdir=/etc \
bindir=/usr/bin \
sbindir=/usr/bin \
libdir=/usr/lib \
loginstall=/var/log/dracut \
install
install -Dm0644 dracut.html ${_fake_doc_dir}/dracut.html
Command used to create the initramfs:
dracut -o "dm i18n lvm" --tmpdir ./initramfs-<kernel_version>.tmp \
--keep --kver <kernel_version> -v \
./initramfs-<kernel_version>.img \
2>&1 | tee initramfs-<kernel_version>-build.log
kernel_version is the directory name under /lib/modules/ where the
kernel modules reside. Though the included files are listed in
build.log and the lsinitrd tool can be used to list them too,
I find it convenient to save the tmpdir, (--keep) so that I can
inspect it's contents more effectively.
See DRACUT(8) for the used options. The kernel module
/lib/modules/4.4.7-lts-x86_64/kernel/drivers/nvme/host/nvme.ko.gz
is in the created initramfs. There is a --add-drivers option
you might need.
Of course, all this is far from our usual from scratch procedure.
This is what I did. Please adjust at will.
HTH. Good luck.
--
Thanos
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