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Better EFI detection

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EFI detection is automatic, now.
Also, make/no-make swap is controled by
a dedicated variable.
This commit is contained in:
Suikan 2021-06-28 07:19:30 +09:00
parent 9ac6a256d4
commit e40072f909
1 changed files with 38 additions and 16 deletions
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54
ubuntu_en.md
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@ -66,35 +66,47 @@ If you don't like above configuration, you can modify the following parameter be
If you set the EFIPARTITION to 0, the EFI partition is not created. If you set the EFIPARTITION to 0, the EFI partition is not created.
If you set the SWAPSIZE is "0", the swap volume is not created. If you set the SWAPSIZE is "0", the swap volume is not created.
```bash ```bash
# export to share with entire script
export PASSPHRASE
# Device and partition setting. If you wan to MAKE /dev/sda2 as linux root partition, # Device and partition setting. If you wan to MAKE /dev/sda2 as linux root partition,
# set the DEV and CRYPTPARTITION to /dev/sda and 2, respectively. # set the DEV and CRYPTPARTITION to /dev/sda and 2, respectively.
# EFI partition is usually fixed as partition 1. If you set 0, Script will skip to make it. # EFI partition is usually fixed as partition 1. If you set 0, Script will skip to make it.
export DEV="/dev/sda" export DEV="/dev/sda"
# If you set to "0", EFI partition will no be made.
export EFISIZE="100M"
# You may want to change the LVROOT for your installation. Keep it unique from other distribution. # You may want to change the LVROOT for your installation. Keep it unique from other distribution.
export LVROOT="ubuntu" export LVROOT="ubuntu"
# If you set "0" to SWAPSIZE, the script skips to create the swap volume. # Configure to make swap or not. 1 : Make, 0 : Do not make.
# This is useful if you add a distribution to the system which has swap volume already. # Set 0 if you add a distribution to the system, to avoid to make swap twice (it causes error).
export SWAPSIZE="8G" export MAKESWAP=1
# The ROOTSIZE is percentage to the free space in the volume group. # The ROOTSIZE is percentage to the free space in the volume group.
# 50% mean, new partition will use 50% of the free space in the LVM volume group. # 50% mean, new partition will use 50% of the free space in the LVM volume group.
export ROOTSIZE="50%FREE" export ROOTSIZE="50%FREE"
# Usually, these names can be left untouched unless existing resources use. # Usually, these names can be left untouched unless existing resources use.
export CRYPTPARTNAME="luks_volume" export CRYPTPARTNAME="luks_volume"
export VGNAME="vg1" export VGNAME="vg1"
export LVSWAP="swap" export LVSWAP="swap"
# Do not touch following lines. # Set the size up to your favorite. The unit is Byte. you can use M,G... notation.
if [ $EFISIZE != "0" -a $EFISIZE != "0M" ] ; then export EFISIZE="100M"
export SWAPSIZE="8G"
# DO NOT touch following lines.
# export to share with entire script
export PASSPHRASE
# Detect firmware type. 1 : EFI, 0 : BIOS
if [ -d /sys/firmware/efi ]; then
export ISEFI=1
else
export ISEFI=0
fi
# Set partition number based on the firmware type
if [ ${ISEFI} -eq 1 ] ; then
export EFIPARTITION=1 export EFIPARTITION=1
export CRYPTPARTITION=2 export CRYPTPARTITION=2
else else
@ -109,14 +121,24 @@ If you want to add a new distribution to the existing distribution, following sc
```bash ```bash
# Optional : Create partitions for in the physical disk. # Optional : Create partitions for in the physical disk.
# Assign specified space and rest of disk to the EFI and LUKS partition, respectively. # Assign specified space and rest of disk to the EFI and LUKS partition, respectively.
if [ ${ISEFI} -eq 1 ] ; then
# Zap existing partition table and create new GPT
sgdisk --zap-all "${DEV}" sgdisk --zap-all "${DEV}"
if [ $EFISIZE != "0" -a $EFISIZE != "0M" ] ; then # Create EFI partition and format it
sgdisk --new=${EFIPARTITION}:0:+${EFISIZE} --change-name=${EFIPARTITION}:"EFI System" --typecode=${EFIPARTITION}:ef00 "${DEV}" sgdisk --new=${EFIPARTITION}:0:+${EFISIZE} --change-name=${EFIPARTITION}:"EFI System" --typecode=${EFIPARTITION}:ef00 "${DEV}"
mkfs.vfat -F 32 -n EFI-SP "${DEV}${EFIPARTITION}" mkfs.vfat -F 32 -n EFI-SP "${DEV}${EFIPARTITION}"
fi # Create Linux partition
sgdisk --new=${CRYPTPARTITION}:0:0 --change-name=${CRYPTPARTITION}:"Linux LUKS" --typecode=${CRYPTPARTITION}:8309 "${DEV}" sgdisk --new=${CRYPTPARTITION}:0:0 --change-name=${CRYPTPARTITION}:"Linux LUKS" --typecode=${CRYPTPARTITION}:8309 "${DEV}"
# Then print them
sgdisk --print "${DEV}" sgdisk --print "${DEV}"
else
# Zap existing Mpartition table
dd if=/dev/zero of=${DEV} bs=512 count=1
# Create MBR and allocate max storage for Linux partition
sfdisk ${DEV} <<EOF
2M,,L
EOF
fi
# Encrypt the partition to install Linux # Encrypt the partition to install Linux
printf %s "${PASSPHRASE}" | cryptsetup luksFormat --type=luks1 --key-file - --batch-mode "${DEV}${CRYPTPARTITION}" printf %s "${PASSPHRASE}" | cryptsetup luksFormat --type=luks1 --key-file - --batch-mode "${DEV}${CRYPTPARTITION}"
@ -150,8 +172,8 @@ The swap volume and / volume is created here, based on the given parameters.
pvcreate /dev/mapper/${CRYPTPARTNAME} pvcreate /dev/mapper/${CRYPTPARTNAME}
vgcreate ${VGNAME} /dev/mapper/${CRYPTPARTNAME} vgcreate ${VGNAME} /dev/mapper/${CRYPTPARTNAME}
# Optional : Create a SWAP Logical Volume on VG, if volume size is not 0. # Create a SWAP Logical Volume on VG,
if [ ${SWAPSIZE} != "0" -a ${SWAPSIZE} != "0G" ] ; then lvcreate -L ${SWAPSIZE} -n ${LVSWAP} ${VGNAME} ; fi if [ ${MAKESWAP} -eq 1 ] ; then lvcreate -L ${SWAPSIZE} -n ${LVSWAP} ${VGNAME} ; fi
# Create the ROOT Logical Volume on VG. # Create the ROOT Logical Volume on VG.
lvcreate -l ${ROOTSIZE} -n ${LVROOT} ${VGNAME} lvcreate -l ${ROOTSIZE} -n ${LVROOT} ${VGNAME}