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''':
*luks2 is not backwards compatible, and requires grub 9999 git latest.  grub 2.04 does not support luks2 yet.  stick with luks1.
 
{{console|body=
{{console|body=
# ##i##cryptsetup luksFormat /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}}


{{console|body=
'''Create LVM volumes for / and swap'''
###i## cd /mnt/funtoo
{{console|body=# ##i##pvcreate /dev/mapper/root}}
###i## wget https://build.funtoo.org/1.4-release-std/x86-64bit/generic_64/gnome-latest.tar.xz
{{console|body=# ##i##vgcreate vg /dev/mapper/root}}
###i## tar --numeric-owner --xattrs --xattrs-include='*' -xpf *gnome* && rm -f *gnome*
{{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}}
 
'''Create directories for chroot'''
{{console|body=# ##i##mkdir -p /mnt/funtoo}}


==Load Funtoo==
==Mount filesystems==
=== mount ===
{{console|body=# ##i##mount /dev/mapper/vg-root /mnt/funtoo}}
*mount up:
{{console|body=# ##i##mkdir /mnt/funtoo/boot}}
{{console|body=
{{console|body=# ##i##mount /dev/sdX1 /mnt/funtoo/boot}}
###i## cd /mnt/funtoo && mount -t proc none proc
{{console|body=# ##i##mkdir /mnt/funtoo/proc}}
mount --rbind /sys sys
{{console|body=# ##i##mount -t proc none /mnt/funtoo/proc}}
mount --rbind /dev dev
{{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}}


=== chroot ===
==Set the date==
*chroot in:
{{Note|See the official Funtoo docs on [https://www.funtoo.org/Install/Setting_the_Date setting the date].}}
{{console|body=
###i## env -i HOME=/root TERM=$TERM $(which chroot) /mnt/funtoo bash -l
}}


*Set yo password:
==Install the Funtoo starge tarball of your choice==
*set yo hostname:
{{Note|These instructions will be using the ''intel-haswell'' minimal stage3. You should adjust them accordingly}}
*set cloudflare dns resolution for installing:
*Set yo time zone:


{{console|body=
{{console|body=# ##i##cd /mnt/funtoo}}
###i## passwd
{{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}}
###i## echo 'hostname="crypto"' > /etc/conf.d/hostname
{{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## echo "nameserver 1.1.1.1" > /etc/resolv.conf
###i## ln -sf /usr/share/zoneinfo/America/Detroit /etc/localtime
}}


=== fstab ===
==Chroot into your new system==
*Deploy your fstab:
{{console|body=# ##i##env -i HOME=/root TERM=$TERM $(which chroot) /mnt/funtoo bash -l}}


{{console|body=
==Configure your system==
###i## cat > /etc/fstab << "EOF"
'''Set a new root password'''
LABEL=BOOT /boot vfat noauto,noatime 1 2
{{console|body=# ##i##passwd}}
/dev/mapper/vg-swap none swap sw 0 0
/dev/mapper/vg-root / ext4 noatime,nodiratime,defaults 0 1
tmpfs /var/tmp/portage tmpfs uid=portage,gid=portage,mode=775,noatime 0 0
#tmpfs /var/tmp/portage tmpfs size=2G,uid=portage,gid=portage,mode=775,noatime 0 0
EOF
}}


*Deploy your crypttab:
'''Set hostname'''
{{console|body=# ##i##echo 'hostname="yourdesiredhostname"' > /etc/conf.d/hostname}}


{{console|body=
'''Set up DNS resolution'''
###i## echo "dmcrypt_root PARTLABEL=FUNTOO none luks,discard" >> /etc/crypttab
{{Note|We are using the Cloudflare DNS server address here. Feel free to use your own.}}
}}
{{console|body=# ##i##echo "nameserver 1.1.1.1" > /etc/resolv.conf}}


=== compile in ram ===
'''Set your timezone'''
*compile in ram:
{{console|body=# ##i##ln -sf /usr/share/zoneinfo/$(tzselect) /etc/localtime}}
{{console|body=
###i## mkdir /var/tmp/portage
###i## chown portage:portage /var/tmp/portage
###i## mount /var/tmp/portage
}}


*Sync:
'''Note your filesystem information'''
{{console|body=# ##i##blkid}}
{{console|body=
{{console|body=
###i## ego sync
/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"}}


*Deploy your ego profile:
'''Configure /etc/fstab'''
{{console|body=
{{Note|The UUID parameter is set to the UUID of your boot partition as found from the blkid command above.}}
###i## ego profile mix-in encrypted-root
{{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-root / ext4 noatime,nodiratime,defaults 0 1
EOF}}


*Deploy your package.use file:
'''Create /etc/crypttab'''
{{console|body=
{{Note|The UUID parameter is set to the UUID of /dev/sdX2 as found from the blkid command above.}}
###i## cat > /etc/portage/package.use << "EOF"
{{console|body=# ##i##echo "root UUID=aafe709b-82e7-448f-a2cb-36adc3787dc3 none luks,discard" >> /etc/crypttab}}
*/* device-mapper lvm luks
sys-kernel/linux-firmware initramfs
EOF
}}


*merge stuff:
'''Create /etc/dmtab'''
{{console|body=# ##i##dmsetup table >> /etc/dmtab}}


{{console|body=
==Portage==
###i## emerge grub haveged intel-microcode linux-firmware eix cryptsetup lvm2 debian-sources debian-sources-lts && emerge -vuND @world && emerge --depclean
'''Download the portage tree'''
}}
{{console|body=# ##i##ego sync}}


*add required services:
'''Change your ego profile to include encrypted root support'''
{{console|body=
{{console|body=# ##i##epro mix-in encrypted-root}}
###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:
'''Edit package USE-flags'''
{{console|body=
{{console|body=# ##i##cat > /etc/portage/package.use <<'EOF'
###i## dmsetup table >> /etc/dmtab
*/* device-mapper lvm luks
}}
sys-kernel/linux-firmware initramfs
sys-fs/cryptsetup -dynamic
EOF}}


=== Bootloader Configuration ===
'''Install necessary packages'''
{{console|body=# ##i##emerge grub haveged intel-microcode linux-firmware cryptsetup lvm2 genkernel iucode_tool}}


*deploy boot.conf
'''Configure services to start at boot'''
{{warning|uuid is the only known working method of loading crypt_root.  even /dev/sdc will not load it.}}
{{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}}


{{console|body=
==Install a bootloader==
###i## cat > /etc/boot.conf << "EOF"
'''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=UUID=a5ca52dc-d00a-40f9-8666-31d9021de327 dolvm real_root=/dev/mapper/vg-root ro rootfstype=auto resume=swap:/dev/mapper/vg-swap quiet
    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
EOF}}
}}
 
'''Install GRUB'''
====For BIOS systems====
{{console|body=# ##i##grub-install --target=i386-pc --no-floppy /dev/sdX}}
{{console|body=# ##i##ego boot update}}
 
====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}}


== GRUB ==
'''Patch genkernel to include LUKS2 support'''
*Install grub:
{{console|body=# ##i##sed '/MODULES_CRYPT/ s/\"$/ af_alg algif_skcipher\"/' -i /usr/share/genkernel/arch/$(arch)/modules_load}}
{{console|body=
###i## grub-install --target=i386-pc /dev/sdc
###i## grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id="BOOT" --recheck --no-nvram /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