Difference between revisions of "Rootfs over encrypted lvm"

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This howto describes how to setup LVM, swap, and root with dmcrypt LUKS. It is a standalone installation walk through, based on the official installations finished product.  boot is not encrypted.
This howto describes how to setup LVM, swap, and root with dmcrypt LUKS. It is a standalone installation walk through, based on the official installations finished product.  boot is not encrypted.
{{warning| You may try this installation method at your own risk! Please note: this guide is outside of the official installation documentation and cannot be supported. If you choose to use this, we assume you know what you are doing and you are on your own.}}


== Prepare the hard drive and partitions ==
== Prepare the hard drive and partitions ==
*List the device to be partitioned, mine is on /dev/sdc
*Before you begin, make sure you are partitioning the correct drive. For the rest of this tutorial, we will be using /dev/sdX as a placeholder.
{{console|body=
###i## lsblk
NAME          MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda            8:0    0  1.8T  0 disk
├─sda1          8:1    0  512M  0 part
├─sda2          8:2    0    8G  0 part [SWAP]
└─sda3          8:3    0  1.8T  0 part
  ├─main-root 254:0    0  500G  0 lvm  /
  └─main-data 254:1    0  1.3T  0 lvm  /home
}}
 
=== link your drive to /dev/sdX ===
to make following this guide easier you can set udev rules and link the drive you're installing to /dev/sdX so everything is copy paste.  just replace the kernel's == sda/mmc/nvme to match your target drive.
hda/sda drives
{{console|body=
###i## echo 'KERNEL=="sda*", SYMLINK+="sdX%n"' > /etc/udev/rules.d/01-funtoo.rules
###i## udevadm control --reload-rules
###i## udevadm trigger
}}
 
mmc/nvme drives
{{console|body=
###i## echo 'KERNEL=="mmcblk0", SYMLINK+="sdX"' > /etc/udev/rules.d/01-funtoo.rules
###i## echo 'KERNEL=="mmcblk0p*", SYMLINK+="sdX%n"' >> /etc/udev/rules.d/01-funtoo.rules
###i## udevadm control --reload-rules
###i## udevadm trigger
}}
 
*verify link
{{console|body=
{{console|body=
###i## lsblk -o name,size,label,partlabel
###i## ls -al /dev/sdX*
lrwxrwxrwx 1 root root 3 Jul 31 14:00 /dev/sdX -> sde
lrwxrwxrwx 1 root root 4 Jul 31 14:00 /dev/sdX1 -> sde1
lrwxrwxrwx 1 root root 4 Jul 31 14:00 /dev/sdX2 -> sde2
}}
}}


==Partition==
==Partition==
=== MBR [BIOS] Partitioning ===
{{Note|Use this method if you are booting using your BIOS, and if your Funtoo LiveCD initial boot menu was light blue. If you're going to use the UEFI/GPT disk format, then please proceed to the next section.}}
{{console|body=
{{console|body=
###i## cgdisk /dev/sdc}}
###i## fdisk /dev/sdX
}}
 
Within {{c|fdisk}}, follow these steps:


delete everything.
'''Empty the partition table''':


{{console|body=
{{console|body=
Command: ##i## new ↵
Command (m for help): ##i##o
First sector: ##i##↵
Last sector: ##i##+1M ↵
Hex Code: ##i##EF02 ↵
Enter name: ##i##BIOS Boot
}}
}}


scroll down to large chunk of free space:
'''Create boot partition''':
 
{{console|body=
{{console|body=
Command: ##i##new
Command (m for help): ##i##n ↵
Partition type (default p): ##i##↵
Partition number (1-4, default 1): ##i##↵
First sector: ##i##↵
First sector: ##i##↵
Last sector: ##i##+128M ↵
Last sector: ##i##+128M ↵
Hex Code: ##i##EF00 ↵
Enter name: ##i##BOOT ↵
}}
}}


scroll down to large chunk of free space:
'''Create partition which will be encrypted with LUKS''':
 
{{console|body=
{{console|body=
Command: ##i##new
Command (m for help): ##i##n ↵
Partition type (default p): ##i##↵
Partition number (2-4, default 2): ##i##↵
First sector: ##i##↵
First sector: ##i##↵
Last sector: ##i##↵
Last sector: ##i##↵
Hex Code: ##i## 8304 ↵
Enter name: ##i##FUNTOO ↵
}}
}}
'''Verify the partition table''':


{{console|body=
{{console|body=
Command (m for help): ##i##p


                              Disk Drive: /dev/sdc
Disk /dev/sdX: 298.1 GiB, 320072933376 bytes, 625142448 sectors
                            Size: 62333952, 29.7 GiB
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x82abc9a6


Part. #     Size        Partition Type            Partition Name
Device    Boot     Start      End   Blocks Id System
----------------------------------------------------------------
/dev/sdX1          2048   264191   131072  83 Linux
            1007.0 KiB  free space
/dev/sdX2        4458496 625142447 312439128  83 Linux
   1        1024.0 KiB BIOS boot partition   BIOS Boot
  2        256.0 MiB  EFI System               BOOT
   3        29.5 GiB   Linux x86-64 root (/)    FUNTOO
}}
}}


'''Write the partition table to disk''':
{{console|body=Command (m for help): ##i##w}}
Your new MBR partition table will now be written to your system disk.
=== UEFI Partitioning ===
{{Note|Use this method if you are interested in booting using UEFI, and if your Funtoo LiveCD initial boot menu was black and white, or the system booted without a boot menu. If it was light blue, this method will not work. Instead, use the instructions in the previous section then skip this section, or reboot LiveCD in UEFI mode first.}}
{{console|body=###i## gdisk /dev/sdX}}
Within {{c|gdisk}}, follow these steps:
'''Empty the partition table''':
{{console|body=
{{console|body=
Command: ##i##write
Command: ##i##o
Command: ##i##quit
This option deletes all partitions and creates a new protective MBR.
Proceed? (Y/N): ##i##y
}}
}}


== Encrypting the drive ==
'''Create boot partition''':


{{console|body=
{{console|body=
# ##i##cryptsetup luksFormat --type luks2 --label=FUNTOO /dev/sdc3
Command: ##i##n ↵
Partition Number: ##i##1 ↵
First sector: ##i##↵
Last sector: ##i##+128M ↵
Hex Code: ##i##EF00 ↵
}}
}}


== Unlock the volume ==
'''Create partition which will be encrypted with LUKS''':
Unlock the volume:
 
{{console|body=
{{console|body=
###i##cryptsetup luksOpen /dev/sdc3 dmcrypt_root
Command: ##i##n ↵
Partition Number: ##i##2 ↵
First sector: ##i##↵
Last sector: ##i##↵##!i## (for rest of disk)
Hex Code: ##i##
}}
}}


== Create logical volumes ==
'''(Optional) Create disk labels''':
{{console|body=
{{console|body=
###i## pvcreate /dev/mapper/dmcrypt_root
Command: ##i##c ↵
###i## vgcreate vg /dev/mapper/dmcrypt_root         
Partition Number: ##i##1
###i## lvcreate -L2G --name swap vg
Enter name: ##i##BOOT
###i## lvcreate -l 100%FREE --name root vg
Command: ##i##c ↵
Partition Number: ##i##2
Enter name: ##i##ROOT
}}
}}


=== Create a filesystem on volumes ===
'''Write Partition Table To Disk''':


{{console|body=
{{console|body=
###i## mkfs.vfat -F 32 /dev/sdc2
Command: ##i##w ↵
###i## fatlabel /dev/sdc2 "BOOT"
Do you want to proceed? (Y/N): ##i##Y ↵
###i## mkswap /dev/mapper/vg-swap
###i## mkfs.ext4 /dev/mapper/vg-root
}}
}}
The partition table will now be written to the disk and {{c|gdisk}} will close.


=== Mount your partitions ===
==Create and mount filesystems.==
'''Create /boot filesystem '''
====For BIOS systems====
{{console|body=# ##i##mkfs.ext2 /dev/sdX1}}
 
====For UEFI systems====
{{console|body=# ##i##mkfs.vfat -F 32 /dev/sdX1}}
 
'''Create LUKS encrypted volume'''
{{Note| Cryptsetup now defaults to LUKS2, which is unsupported by stable versions of grub. This is why we are not encrypting /boot.}}
{{Warning| The debian-sources kernel in current stage3 tarballs does not allow for passwords in excess of 63 characters.}}


{{console|body=
{{console|body=
###i## swapon /dev/mapper/vg-swap
# ##i##cryptsetup luksFormat /dev/sdX2
###i## mkdir /mnt/funtoo
###i## mount /dev/mapper/vg-root /mnt/funtoo
###i## mkdir  /mnt/funtoo/boot
###i## mount /dev/sdc2 /mnt/funtoo/boot
}}
}}


==Get Funtoo Gnome==
'''Open newly created LUKS volume'''
You can pull your [[Subarches]] gnome tarball if you wish:
{{console|body=# ##i##cryptsetup open /dev/sdX2 root}}
 
'''Create LVM volumes for / and swap'''
{{console|body=# ##i##pvcreate /dev/mapper/root}}
{{console|body=# ##i##vgcreate vg /dev/mapper/root}}
{{Note|Replace "16G" with the amount of swap you would like to make available.}}
{{console|body=# ##i##lvcreate -L16G --name swap vg}}
{{console|body=# ##i##lvcreate -l 100%FREE --name root vg}}
{{Note|The "-l 100%FREE" option above will use the remainder of the disk for your root partition. If you would prefer to create separate for /home or /var (for example), you can instead continue to use the "-LXXG" option for fixed sizes.}}
 
'''Create filesystems on LVM volumes'''
{{console|body=# ##i##mkswap /dev/mapper/vg-swap}}
{{console|body=# ##i##mkfs.ext4 /dev/mapper/vg-root}}


{{console|body=
'''Create directories for chroot'''
###i## cd /mnt/funtoo
{{console|body=# ##i##mkdir -p /mnt/funtoo}}
###i## wget https://build.funtoo.org/1.4-release-std/x86-64bit/generic_64/gnome-latest.tar.xz
 
###i## tar --numeric-owner --xattrs --xattrs-include='*' -xpf *gnome* && rm -f *gnome*
==Mount filesystems==
}}
{{console|body=# ##i##mount /dev/mapper/vg-root /mnt/funtoo}}
{{console|body=# ##i##mkdir /mnt/funtoo/boot}}
{{console|body=# ##i##mount /dev/sdX1 /mnt/funtoo/boot}}
{{console|body=# ##i##mkdir /mnt/funtoo/proc}}
{{console|body=# ##i##mount -t proc none /mnt/funtoo/proc}}
{{console|body=# ##i##mkdir /mnt/funtoo/dev}}
{{console|body=# ##i##mount --rbind /dev /mnt/funtoo/dev}}
{{console|body=# ##i##mkdir /mnt/funtoo/sys}}
{{console|body=# ##i##mount --rbind /sys /mnt/funtoo/sys}}
 
==Set the date==
{{Note|See the official Funtoo docs on [https://www.funtoo.org/Install/Setting_the_Date setting the date].}}
 
==Install the Funtoo starge tarball of your choice==
{{Note|These instructions will be using the ''intel-haswell'' minimal stage3. You should adjust them accordingly}}


==Load Funtoo==
{{console|body=# ##i##cd /mnt/funtoo}}
*expand your run tmpfs to be half of your ram:
{{console|body=# ##i##wget https://build.funtoo.org/1.4-release-std/x86-64bit/intel64-haswell/2021-03-10/stage3-intel64-haswell-1.4-release-std-2021-03-10.tar.xz}}
{{console|body=
{{console|body=# ##i##tar --numeric-owner --xattrs --xattrs-include='*' -xpf stage3-intel64-haswell-1.4-release-std-2021-03-10.tar.xz && rm -f stage3-intel64-haswell-1.4-release-std-2021-03-10.tar.xz}}
###i## mount -t tmpfs tmpfs /run
}}


=== mount ===
==Chroot into your new system==
*mount up:
{{console|body=# ##i##env -i HOME=/root TERM=$TERM $(which chroot) /mnt/funtoo bash -l}}
{{console|body=
###i## cd /mnt/funtoo && mount -t proc none proc
mount --rbind /sys sys
mount --rbind /dev dev
mount --rbind /run run
}}


=== chroot ===
==Configure your system==
*chroot in:
'''Set a new root password'''
{{console|body=
{{console|body=# ##i##passwd}}
###i## cd /mnt/funtoo && env -i HOME=/root TERM=$TERM chroot . bash -l
}}


*Set yo password:
'''Set hostname'''
*set yo hostname:
{{console|body=# ##i##echo 'hostname="yourdesiredhostname"' > /etc/conf.d/hostname}}
*set cloudflare dns resolution for installing:
*Set yo time zone:


{{console|body=
'''Set up DNS resolution'''
###i## passwd
{{Note|We are using the Cloudflare DNS server address here. Feel free to use your own.}}
###i## echo 'hostname="crypto"' > /etc/conf.d/hostname
{{console|body=# ##i##echo "nameserver 1.1.1.1" > /etc/resolv.conf}}
###i## echo "nameserver 1.1.1.1" > /etc/resolv.conf
###i## ln -sf /usr/share/zoneinfo/America/Detroit /etc/localtime
}}


=== fstab ===
'''Set your timezone'''
*Deploy your fstab:
{{console|body=# ##i##ln -sf /usr/share/zoneinfo/$(tzselect) /etc/localtime}}


'''Note your filesystem information'''
{{console|body=# ##i##blkid}}
{{console|body=
{{console|body=
###i## cat > /etc/fstab << "EOF"
/dev/sdX1: UUID="6453-0C55" TYPE="vfat" PARTLABEL="efi" PARTUUID="4e195c4b-f88c-4205-b9df-79a879704b2f"
LABEL=BOOT /boot vfat noauto,noatime 1 2
/dev/sdX2: UUID="aafe709b-82e7-448f-a2cb-36adc3787dc3" TYPE="crypto_LUKS" PARTLABEL="system" PARTUUID="93d0cf9b-0b95-4d8b-919f-48cd1774996f"
/dev/mapper/root: UUID="hvz79n-I2VE-nR1c-0hDQ-PVkR-3GRb-rnuJ9C" TYPE="LVM2_member"
/dev/mapper/vg-swap: UUID="a9188bc3-7def-422b-990d-9de431825779" TYPE="swap"
/dev/mapper/vg-root: UUID="2eaf45e6-d33b-4155-b4ca-63a2fdbfb896" TYPE="ext4"}}
 
'''Configure /etc/fstab'''
{{Note|The UUID parameter is set to the UUID of your boot partition as found from the blkid command above.}}
{{console|body=# ##i##cat > /etc/fstab << 'EOF'
UUID=6453-0C55 /boot vfat noauto,noatime 1 2
/dev/mapper/vg-swap none swap sw 0 0
/dev/mapper/vg-swap none swap sw 0 0
/dev/mapper/vg-root / ext4 noatime,nodiratime,defaults 0 1
/dev/mapper/vg-root / ext4 noatime,nodiratime,defaults 0 1
tmpfs /run tmpfs rw,nodev,nosuid 0 0
EOF}}
EOF
}}


*Deploy your crypttab:
'''Create /etc/crypttab'''
{{Note|The UUID parameter is set to the UUID of /dev/sdX2 as found from the blkid command above.}}
{{console|body=# ##i##echo "root UUID=aafe709b-82e7-448f-a2cb-36adc3787dc3 none luks,discard" >> /etc/crypttab}}


{{console|body=
'''Create /etc/dmtab'''
###i## echo "dmcrypt_root PARTLABEL=FUNTOO none luks,discard" >> /etc/crypttab
{{console|body=# ##i##dmsetup table >> /etc/dmtab}}
}}
 
=== compile in ram ===
*compile in ram:
{{console|body=
###i## echo 'PORTAGE_TMPDIR="/run"' > /etc/portage/make.conf
}}


*Sync:
==Portage==
{{console|body=
'''Download the portage tree'''
###i## ego sync
{{console|body=# ##i##ego sync}}
}}


*Deploy your ego profile:
'''Change your ego profile to include encrypted root support'''
{{console|body=
{{console|body=# ##i##epro mix-in encrypted-root}}
###i## ego profile mix-in encrypted-root
}}


*Deploy your package.use file:
'''Edit package USE-flags'''
{{console|body=
{{console|body=# ##i##cat > /etc/portage/package.use <<'EOF'
###i## cat > /etc/portage/package.use << "EOF"
*/* device-mapper lvm luks
*/* device-mapper lvm luks
sys-kernel/linux-firmware initramfs
sys-kernel/linux-firmware initramfs
EOF
sys-fs/cryptsetup -dynamic
}}
EOF}}
 
*merge stuff:
 
{{console|body=
###i## emerge grub haveged intel-microcode linux-firmware eix cryptsetup lvm2 debian-sources debian-sources-lts && emerge -vuND @world && emerge --depclean
}}


*add required services:
'''Install necessary packages'''
{{console|body=
{{console|body=# ##i##emerge grub haveged intel-microcode linux-firmware cryptsetup lvm2 genkernel iucode_tool}}
###i## rc-update add device-mapper sysinit
###i## rc-update add dmcrypt sysinit
###i## rc-update add haveged && rc-update add gpm && rc-update add busybox-ntpd
}}
 
*deploy dmtab:
{{console|body=
###i## dmsetup table >> /etc/dmtab
}}


== Bootloader Configuration ==
'''Configure services to start at boot'''
=== /etc/boot.conf ===
{{console|body=# ##i##rc-update add device-mapper sysinit}}
{{console|body=# ##i##rc-update add dmcrypt sysinit}}
{{console|body=# ##i##rc-update add lvmetad sysinit}}
{{console|body=# ##i##rc-update add haveged default}}
{{console|body=# ##i##rc-update add busybox-ntpd default}}


<pre>
==Install a bootloader==
'''Configure /etc/boot.conf'''
{{Note|The UUID parameter is set to the UUID of /dev/sdX2 as found from the blkid command above.}}
{{console|body=# ##i##cat > /etc/boot.conf <<'EOF'
boot {
boot {
  generate grub
    generate grub
  default "Funtoo Linux"
    default "Funtoo Linux"
  timeout 3
    timeout 3
}
}
"Funtoo Linux" {
"Funtoo Linux" {
kernel kernel[-v]
    kernel kernel[-v]
initrd initramfs[-v]
    initrd initramfs[-v]
  params += crypt_root=LABEL=FUNTOO dolvm luks=yes real_root=/dev/mapper/vg-root ro rootfstype=ext4 resume=swap:/dev/mapper/vg-swap
    params += crypt_root=UUID=aafe709b-82e7-448f-a2cb-36adc3787dc3 dolvm real_root=/dev/mapper/vg-root ro rootfstype=ext4 resume=swap:/dev/mapper/vg-swap quiet
}
}
</pre>
EOF}}


== GRUB ==
'''Install GRUB'''
*Install grub in legacy mode:
====For BIOS systems====
{{console|body=
{{console|body=# ##i##grub-install --target=i386-pc --no-floppy /dev/sdX}}
###i## grub-install --target=i386-pc /dev/sdc
{{console|body=# ##i##ego boot update}}
###i## ego boot update}}
 
=== EFI from Legacy ===
 
*manually make efi directory:
*remount /dev/sdc2 to /boot/efi:
*install efi images:
{{console|body=
###i## mkdir /boot/efi
###i## mount /dev/sdc2 /boot/efi
###i## grub-install --target=x86_64-efi /boot/efi
}}


=== EFI from EFI ===
====For UEFI systems====
{{console|body=# ##i##mount -o remount,rw /sys/firmware/efi/efivars}}
{{Note|For 32 bit systems, the following command should be changed to:
{{console|body=# ##i##grub-install --target=i386-efi --efi-directory=/boot --bootloader-id="Funtoo Linux" --recheck /dev/sdX}}}}
{{console|body=# ##i##grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id="Funtoo Linux" --recheck /dev/sdX}}
{{console|body=# ##i##ego boot update}}


{{console|body=
'''Patch genkernel to include LUKS2 support'''
###i##mount -o remount,rw /sys/firmware/efi/efivars
{{console|body=# ##i##sed '/MODULES_CRYPT/ s/\"$/ af_alg algif_skcipher\"/' -i /usr/share/genkernel/arch/$(arch)/modules_load}}
###i##grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id="Funtoo Linux [GRUB]" --recheck /dev/sdc
###i##ego boot update
}}


=== Final steps ===
'''Generate a new initramfs'''
exit chroot, unmount, and close encrypted drive.
{{console|body=# ##i##genkernel --clean --luks --lvm --disklabel --ramdisk-modules --fullname=$(ls /boot/initramfs-* {{!}} tail -c +17) initramfs}}


{{console|body=
==Finishing installation==
###i## exit
From this point, you should be able to finish following the [https://www.funtoo.org/Install/Network official Funtoo Linux install instructions]
###i## swapoff /dev/dm-1
###i## cd ..
###i## umount -lR funtoo
###i## vgchange -a n
###i## cryptsetup luksClose dmcrypt_root
}}


==management==
==Managing your LUKS volume==
=== Change your LUKs-encrypted drive's passphrase ===
'''Change your LUKs-encrypted drive's passphrase'''
You may want to change your encrypted volume’s passphrase or password from time to time. To do so, run the following commands in the console as root:
You may want to change your encrypted volume’s passphrase or password from time to time. To do so, run the following commands in the console as root:



Revision as of 18:22, July 31, 2021

This howto describes how to setup LVM, swap, and root with dmcrypt LUKS. It is a standalone installation walk through, based on the official installations finished product. boot is not encrypted.

   Warning
You may try this installation method at your own risk! Please note: this guide is outside of the official installation documentation and cannot be supported. If you choose to use this, we assume you know what you are doing and you are on your own.

Prepare the hard drive and partitions

  • Before you begin, make sure you are partitioning the correct drive. For the rest of this tutorial, we will be using /dev/sdX as a placeholder.
root # lsblk
NAME          MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda             8:0    0  1.8T  0 disk 
├─sda1          8:1    0  512M  0 part 
├─sda2          8:2    0    8G  0 part [SWAP]
└─sda3          8:3    0  1.8T  0 part 
  ├─main-root 254:0    0  500G  0 lvm  /
  └─main-data 254:1    0  1.3T  0 lvm  /home

link your drive to /dev/sdX

to make following this guide easier you can set udev rules and link the drive you're installing to /dev/sdX so everything is copy paste. just replace the kernel's == sda/mmc/nvme to match your target drive. hda/sda drives

root # echo 'KERNEL=="sda*", SYMLINK+="sdX%n"' > /etc/udev/rules.d/01-funtoo.rules
root # udevadm control --reload-rules
root # udevadm trigger

mmc/nvme drives

root # echo 'KERNEL=="mmcblk0", SYMLINK+="sdX"' > /etc/udev/rules.d/01-funtoo.rules
root # echo 'KERNEL=="mmcblk0p*", SYMLINK+="sdX%n"' >> /etc/udev/rules.d/01-funtoo.rules
root # udevadm control --reload-rules
root # udevadm trigger
  • verify link
root # ls -al /dev/sdX*
lrwxrwxrwx 1 root root 3 Jul 31 14:00 /dev/sdX -> sde
lrwxrwxrwx 1 root root 4 Jul 31 14:00 /dev/sdX1 -> sde1
lrwxrwxrwx 1 root root 4 Jul 31 14:00 /dev/sdX2 -> sde2

Partition

MBR [BIOS] Partitioning

   Note

Use this method if you are booting using your BIOS, and if your Funtoo LiveCD initial boot menu was light blue. If you're going to use the UEFI/GPT disk format, then please proceed to the next section.

root # fdisk /dev/sdX

Within fdisk, follow these steps:

Empty the partition table:

Command (m for help): o ↵

Create boot partition:

Command (m for help): n ↵
Partition type (default p): 
Partition number (1-4, default 1): 
First sector: 
Last sector: +128M ↵

Create partition which will be encrypted with LUKS:

Command (m for help): n ↵
Partition type (default p): 
Partition number (2-4, default 2): 
First sector: 
Last sector: 

Verify the partition table:

Command (m for help): p

Disk /dev/sdX: 298.1 GiB, 320072933376 bytes, 625142448 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x82abc9a6

Device    Boot     Start       End    Blocks  Id System
/dev/sdX1           2048    264191    131072  83 Linux
/dev/sdX2        4458496 625142447 312439128  83 Linux

Write the partition table to disk:

Command (m for help): w

Your new MBR partition table will now be written to your system disk.

UEFI Partitioning

   Note

Use this method if you are interested in booting using UEFI, and if your Funtoo LiveCD initial boot menu was black and white, or the system booted without a boot menu. If it was light blue, this method will not work. Instead, use the instructions in the previous section then skip this section, or reboot LiveCD in UEFI mode first.

root # gdisk /dev/sdX

Within gdisk, follow these steps:

Empty the partition table:

Command: o ↵
This option deletes all partitions and creates a new protective MBR.
Proceed? (Y/N): y ↵

Create boot partition:

Command: n ↵
Partition Number: 1 ↵
First sector: 
Last sector: +128M ↵
Hex Code: EF00 ↵

Create partition which will be encrypted with LUKS:

Command: n ↵
Partition Number: 2 ↵
First sector: 
Last sector:  (for rest of disk)
Hex Code: 

(Optional) Create disk labels:

Command: c ↵
Partition Number: 1
Enter name: BOOT 
Command: c ↵
Partition Number: 2
Enter name: ROOT

Write Partition Table To Disk:

Command: w ↵
Do you want to proceed? (Y/N): Y ↵

The partition table will now be written to the disk and gdisk will close.

Create and mount filesystems.

Create /boot filesystem

For BIOS systems

root # mkfs.ext2 /dev/sdX1

For UEFI systems

root # mkfs.vfat -F 32 /dev/sdX1

Create LUKS encrypted volume

   Note
Cryptsetup now defaults to LUKS2, which is unsupported by stable versions of grub. This is why we are not encrypting /boot.
   Warning
The debian-sources kernel in current stage3 tarballs does not allow for passwords in excess of 63 characters.
root # cryptsetup luksFormat /dev/sdX2

Open newly created LUKS volume

root # cryptsetup open /dev/sdX2 root

Create LVM volumes for / and swap

root # pvcreate /dev/mapper/root
root # vgcreate vg /dev/mapper/root
   Note

Replace "16G" with the amount of swap you would like to make available.

root # lvcreate -L16G --name swap vg
root # lvcreate -l 100%FREE --name root vg
   Note

The "-l 100%FREE" option above will use the remainder of the disk for your root partition. If you would prefer to create separate for /home or /var (for example), you can instead continue to use the "-LXXG" option for fixed sizes.

Create filesystems on LVM volumes

root # mkswap /dev/mapper/vg-swap
root # mkfs.ext4 /dev/mapper/vg-root

Create directories for chroot

root # mkdir -p /mnt/funtoo

Mount filesystems

root # mount /dev/mapper/vg-root /mnt/funtoo
root # mkdir /mnt/funtoo/boot
root # mount /dev/sdX1 /mnt/funtoo/boot
root # mkdir /mnt/funtoo/proc
root # mount -t proc none /mnt/funtoo/proc
root # mkdir /mnt/funtoo/dev
root # mount --rbind /dev /mnt/funtoo/dev
root # mkdir /mnt/funtoo/sys
root # mount --rbind /sys /mnt/funtoo/sys

Set the date

   Note

See the official Funtoo docs on setting the date.

Install the Funtoo starge tarball of your choice

   Note

These instructions will be using the intel-haswell minimal stage3. You should adjust them accordingly

root # cd /mnt/funtoo
root # wget https://build.funtoo.org/1.4-release-std/x86-64bit/intel64-haswell/2021-03-10/stage3-intel64-haswell-1.4-release-std-2021-03-10.tar.xz
root # tar --numeric-owner --xattrs --xattrs-include='*' -xpf stage3-intel64-haswell-1.4-release-std-2021-03-10.tar.xz && rm -f stage3-intel64-haswell-1.4-release-std-2021-03-10.tar.xz

Chroot into your new system

root # env -i HOME=/root TERM=$TERM $(which chroot) /mnt/funtoo bash -l

Configure your system

Set a new root password

root # passwd

Set hostname

root # echo 'hostname="yourdesiredhostname"' > /etc/conf.d/hostname

Set up DNS resolution

   Note

We are using the Cloudflare DNS server address here. Feel free to use your own.

root # echo "nameserver 1.1.1.1" > /etc/resolv.conf

Set your timezone

root # ln -sf /usr/share/zoneinfo/$(tzselect) /etc/localtime

Note your filesystem information

root # blkid
/dev/sdX1: UUID="6453-0C55" TYPE="vfat" PARTLABEL="efi" PARTUUID="4e195c4b-f88c-4205-b9df-79a879704b2f"
/dev/sdX2: UUID="aafe709b-82e7-448f-a2cb-36adc3787dc3" TYPE="crypto_LUKS" PARTLABEL="system" PARTUUID="93d0cf9b-0b95-4d8b-919f-48cd1774996f"
/dev/mapper/root: UUID="hvz79n-I2VE-nR1c-0hDQ-PVkR-3GRb-rnuJ9C" TYPE="LVM2_member"
/dev/mapper/vg-swap: UUID="a9188bc3-7def-422b-990d-9de431825779" TYPE="swap"
/dev/mapper/vg-root: UUID="2eaf45e6-d33b-4155-b4ca-63a2fdbfb896" TYPE="ext4"

Configure /etc/fstab

   Note

The UUID parameter is set to the UUID of your boot partition as found from the blkid command above.

root # cat > /etc/fstab << 'EOF'
UUID=6453-0C55 /boot vfat noauto,noatime 1 2
/dev/mapper/vg-swap none swap sw 0 0
/dev/mapper/vg-root / ext4 noatime,nodiratime,defaults 0 1
EOF

Create /etc/crypttab

   Note

The UUID parameter is set to the UUID of /dev/sdX2 as found from the blkid command above.

root # echo "root UUID=aafe709b-82e7-448f-a2cb-36adc3787dc3 none luks,discard" >> /etc/crypttab

Create /etc/dmtab

root # dmsetup table >> /etc/dmtab

Portage

Download the portage tree

root # ego sync

Change your ego profile to include encrypted root support

root # epro mix-in encrypted-root

Edit package USE-flags

root # cat > /etc/portage/package.use <<'EOF'
*/* device-mapper lvm luks
sys-kernel/linux-firmware initramfs
sys-fs/cryptsetup -dynamic
EOF

Install necessary packages

root # emerge grub haveged intel-microcode linux-firmware cryptsetup lvm2 genkernel iucode_tool

Configure services to start at boot

root # rc-update add device-mapper sysinit
root # rc-update add dmcrypt sysinit
root # rc-update add lvmetad sysinit
root # rc-update add haveged default
root # rc-update add busybox-ntpd default

Install a bootloader

Configure /etc/boot.conf

   Note

The UUID parameter is set to the UUID of /dev/sdX2 as found from the blkid command above.

root # cat > /etc/boot.conf <<'EOF'
boot {
    generate grub
    default "Funtoo Linux"
    timeout 3
}
"Funtoo Linux" {
    kernel kernel[-v]
    initrd initramfs[-v]
    params += crypt_root=UUID=aafe709b-82e7-448f-a2cb-36adc3787dc3 dolvm real_root=/dev/mapper/vg-root ro rootfstype=ext4 resume=swap:/dev/mapper/vg-swap quiet
}
EOF

Install GRUB

For BIOS systems

root # grub-install --target=i386-pc --no-floppy /dev/sdX
root # ego boot update

For UEFI systems

root # mount -o remount,rw /sys/firmware/efi/efivars
   Note

For 32 bit systems, the following command should be changed to:

root # grub-install --target=i386-efi --efi-directory=/boot --bootloader-id="Funtoo Linux" --recheck /dev/sdX
root # grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id="Funtoo Linux" --recheck /dev/sdX
root # ego boot update

Patch genkernel to include LUKS2 support

root # sed '/MODULES_CRYPT/ s/\"$/ af_alg algif_skcipher\"/' -i /usr/share/genkernel/arch/$(arch)/modules_load

Generate a new initramfs

root # genkernel --clean --luks --lvm --disklabel --ramdisk-modules --fullname=$(ls /boot/initramfs-* | tail -c +17) initramfs

Finishing installation

From this point, you should be able to finish following the official Funtoo Linux install instructions

Managing your LUKS volume

Change your LUKs-encrypted drive's passphrase You may want to change your encrypted volume’s passphrase or password from time to time. To do so, run the following commands in the console as root:

root # cryptsetup luksChangeKey /dev/sdx3

You'll be prompted to enter in the existing passphrase first, then to enter in your new passphrase. You will not be asked to confirm your new passphrase, so be careful when running this operation.

Additional links and information