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carcajou
Apprentice
Joined: 10 Jun 2008
Posts: 248
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 Posted: Mon Jan 30, 2023 8:39 pm Post subject: [solved]LUKS (without LVM) + dracut - what am I doing wrong? |
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Hi guys.
Sometime ago I repartitioned my drive and encrypted everything except boot and EFI partition. I was using gentoo-kernel + dracut until then, but for some reason I was unable to make it boot after encryption. My current partition scheme is:
| Code: |
nvme0n1 259:0 0 232.9G 0 disk
├─nvme0n1p1 259:1 0 512M 0 part (EFI vfat partition)
├─nvme0n1p2 259:2 0 1.7G 0 part (boot ext4 partition)
└─nvme0n1p3 259:3 0 230.7G 0 part
└─root 254:0 0 230.7G 0 crypt /
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In the end I just used genkernel which generates usable initrd image (genkernel --luks all) that asks me for password on the boot. Now I want to go back gentoo-kernel (or gentoo-kernel-bin). I see that genkernel is not recommended unless the kernel itself is build with it as well, so I wanted to revert to dracut.
My dracut.conf.d/custom.conf looks like this:
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omit_dracutmodules+=" systemd systemd-initrd dracut-systemd i18n systemd-udevd "
add_dracutmodules+=" dm crypt fstab-sys udev-rules "
filesystems+=" ext4 "
early_microcode="no"
use_fstab="yes"
add_fstab+=" /etc/fstab "
hostonly="yes"
compress="gzip"
add_device+=" /dev/mapper/root "
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I just emerge gentoo-kernel-bin with initramfs USE enabled. I tried all possible combinations for kernel boot parameteres: rd.luks.uuid=<UUID>, rd.luks.uuid=luks-<UUID>, with and without root=<UUID> etc. even including custom kernel command line parameter for the dracut/initramfs image itself, but every time the same: it says something like "luksOpen nvme0n1p3". I enter the password, press Enter and that's it. Cursor blinks, nothing happens.
My emerge --info:
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Portage 3.0.43 (python 3.10.9-final-0, default/linux/amd64/17.1/desktop/plasma, gcc-12, glibc-2.36-r5, 5.15.88-gentoo-x86_64 x86_64)
=================================================================
System uname: Linux-5.15.88-gentoo-x86_64-x86_64-AMD_Ryzen_5_3400G_with_Radeon_Vega_Graphics-with-glibc2.36
KiB Mem: 14236540 total, 11106240 free
KiB Swap: 2097148 total, 2097148 free
Timestamp of repository gentoo: Wed, 25 Jan 2023 21:17:00 +0000
Head commit of repository gentoo: 8a7cfa97802c7ca4ad7e6eaab9b7517475b9b4d9
sh bash 5.1_p16-r2
ld GNU ld (Gentoo 2.39 p5) 2.39.0
app-misc/pax-utils: 1.3.5::gentoo
app-shells/bash: 5.1_p16-r2::gentoo
dev-lang/perl: 5.36.0-r1::gentoo
dev-lang/python: 3.10.9::gentoo, 3.11.1::gentoo
dev-lang/rust-bin: 1.66.1::gentoo
dev-util/cmake: 3.24.3::gentoo
dev-util/meson: 0.64.1::gentoo
sys-apps/baselayout: 2.9::gentoo
sys-apps/openrc: 0.45.2-r2::gentoo
sys-apps/sandbox: 2.29::gentoo
sys-devel/autoconf: 2.71-r5::gentoo
sys-devel/automake: 1.16.5::gentoo
sys-devel/binutils: 2.39-r4::gentoo
sys-devel/binutils-config: 5.4.1::gentoo
sys-devel/gcc: 12.2.1_p20230121-r1::gentoo
sys-devel/gcc-config: 2.8::gentoo
sys-devel/libtool: 2.4.7::gentoo
sys-devel/llvm: 15.0.6-r1::gentoo
sys-devel/make: 4.3::gentoo
sys-kernel/linux-headers: 5.15-r3::gentoo (virtual/os-headers)
sys-libs/glibc: 2.36-r5::gentoo
Repositories:
gentoo
location: /var/db/repos/gentoo
sync-type: git
sync-uri: https://github.com/gentoo-mirror/gentoo.git
priority: -1000
volatile: True
ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="@FREE @BINARY-REDISTRIBUTABLE"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-O2 -pipe"
DISTDIR="/var/cache/distfiles"
ENV_UNSET="CARGO_HOME DBUS_SESSION_BUS_ADDRESS DISPLAY GDK_PIXBUF_MODULE_FILE GOBIN GOPATH PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR XDG_STATE_HOME"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance buildpkg-live config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="http://distfiles.gentoo.org"
LANG="en_US.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
LEX="flex"
MAKEOPTS="-j8"
PKGDIR="/var/cache/binpkgs"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git"
PORTAGE_TMPDIR="/var/tmp"
SHELL="/bin/bash"
USE="X a52 aac acl acpi activities alsa amd64 bash-completion bluetooth branding bzip2 cairo caps cdda cdr cli crypt cups dbus declarative dri dts dvd dvdr elogind encode exif flac fortran gdbm gif gpm gtk gui heif iconv icu ipv6 jpeg kde kwallet lcms libglvnd libnotify libtirpc lm-sensors lto mad mng mp3 mp4 mpeg multilib ncurses nls nptl ogg opengl openmp pam pango pcre pdf pgo plasma png policykit ppds pulseaudio qml qt5 readline sdl seccomp semantic-desktop sound spell split-usr ssl startup-notification svg test-rust tiff truetype udev udisks unicode upower usb vaapi verify-sig vim-syntax vorbis webp widgets wxwidgets x264 x265 xattr xcb xft xml xv xvid zip zlib zstd" ABI_X86="64" ADA_TARGET="gnat_2021" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext sse sse2 aes avx avx2 f16c fma3 pclmul popcnt rdrand sha sse3 sse4_1 sse4_2 sse4a ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="efi-64" INPUT_DEVICES="libinput" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-4 php8-0" POSTGRES_TARGETS="postgres12 postgres13" PYTHON_SINGLE_TARGET="python3_10" PYTHON_TARGETS="python3_10" RUBY_TARGETS="ruby27 ruby30" USERLAND="GNU" VIDEO_CARDS="amdgpu radeonsi radeon" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq proto steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset: ADDR2LINE, AR, ARFLAGS, AS, ASFLAGS, CC, CCLD, CONFIG_SHELL, CPP, CPPFLAGS, CTARGET, CXX, CXXFILT, ELFEDIT, EMERGE_DEFAULT_OPTS, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, INSTALL_MASK, LC_ALL, LD, LFLAGS, LIBTOOL, LINGUAS, MAKE, MAKEFLAGS, NM, OBJCOPY, OBJDUMP, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, RANLIB, READELF, RUSTFLAGS, SIZE, STRINGS, STRIP, YACC, YFLAGS
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Thank you.
Last edited by carcajou on Mon Jan 30, 2023 9:55 pm; edited 1 time in total |
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alamahant
Advocate
Joined: 23 Mar 2019
Posts: 3948
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| Posted: Mon Jan 30, 2023 8:54 pm Post subject: |
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No grub?
If you have grub then
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/etc/default/grub --->>>>
GRUB_CMDLINE_LINUX="cryptdevice=/dev/nvme0n1p3:root root=/dev/mapper/root rootfstype=ext4"
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/etc/crypttab ---->>>
root /dev/nvme0n1p3 none luks,initramfs
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In dracut.conf these
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omit_dracutmodules+=" systemd systemd-initrd dracut-systemd i18n systemd-udevd "
early_microcode="no"
hostonly="yes"
compress="gzip"
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are sufficient.
Enable dmcrypt@boot (and maybe lvm?) rebuild dracut initramfs and update grub.
Better have grub built with USE="device-mapper"
_________________
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carcajou
Apprentice
Joined: 10 Jun 2008
Posts: 248
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| Posted: Mon Jan 30, 2023 9:54 pm Post subject: |
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alamahant, it works! Thank you, thank you.
I have Grub. I played with kernel boot parameters, but the result was the same.
I was missing /etc/crypttab. Dm-crypt service was already enabled, because it automatically mounts my HDD (also encrypted). So adding crypttab as per your instruction, regenerating initramfs with dracut and updating Grub solved it for me.
Updating grub_cmdline_linux was not even required, because dracut automatically puts all the parameters inside initramfs. |
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