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partitioning: Add some comments to improve readbility

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ColorfulRhino 2024-07-09 17:44:27 +02:00 committed by Igor
parent aaee1bb85f
commit 0b6d61f4c4
1 changed files with 30 additions and 1 deletions
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31
lib/functions/image/partitioning.sh
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@ -184,12 +184,16 @@ function prepare_partitions() {
[[ "$IMAGE_PARTITION_TABLE" == "msdos" ]] && echo "label: dos" || echo "label: $IMAGE_PARTITION_TABLE"
local next=$OFFSET
# Legacy BIOS partition
if [[ -n "$biospart" ]]; then
# gpt: BIOS boot
local type="21686148-6449-6E6F-744E-656564454649"
echo "$biospart : name=\"bios\", start=${next}MiB, size=${BIOSSIZE}MiB, type=${type}"
local next=$(($next + $BIOSSIZE))
fi
# EFI partition
if [[ -n "$uefipart" ]]; then
# dos: EFI (FAT-12/16/32)
# gpt: EFI System
@ -197,8 +201,12 @@ function prepare_partitions() {
echo "$uefipart : name=\"efi\", start=${next}MiB, size=${UEFISIZE}MiB, type=${type}"
local next=$(($next + $UEFISIZE))
fi
# Linux extended boot loader (XBOOTLDR) partition
# See also https://wiki.archlinux.org/title/Partitioning#/boot
if [[ -n "$bootpart" ]]; then
# Linux extended boot
# dos: Linux extended boot (see https://github.com/util-linux/util-linux/commit/d0c430068206e1215222792e3aa10689f8c632a6)
# gpt: Linux extended boot
[[ "$IMAGE_PARTITION_TABLE" != "gpt" ]] && local type="ea" || local type="BC13C2FF-59E6-4262-A352-B275FD6F7172"
if [[ -n "$rootpart" ]]; then
echo "$bootpart : name=\"bootfs\", start=${next}MiB, size=${BOOTSIZE}MiB, type=${type}"
@ -208,6 +216,8 @@ function prepare_partitions() {
echo "$bootpart : name=\"bootfs\", start=${next}MiB, type=${type}"
fi
fi
# Root filesystem partition
if [[ -n "$rootpart" ]]; then
# dos: Linux
# gpt: Linux filesystem
@ -247,6 +257,9 @@ function prepare_partitions() {
declare root_part_uuid="uninitialized"
##
## ROOT PARTITION
##
if [[ -n $rootpart ]]; then
local rootdevice="${LOOP}p${rootpart}"
@ -258,10 +271,16 @@ function prepare_partitions() {
check_loop_device "$rootdevice"
display_alert "Creating rootfs" "$ROOTFS_TYPE on $rootdevice"
run_host_command_logged mkfs.${mkfs[$ROOTFS_TYPE]} ${mkopts[$ROOTFS_TYPE]} ${mkopts_label[$ROOTFS_TYPE]:+${mkopts_label[$ROOTFS_TYPE]}"$ROOT_FS_LABEL"} "${rootdevice}"
#
# BEGIN: Options for specific filesystems
[[ $ROOTFS_TYPE == ext4 ]] && run_host_command_logged tune2fs -o journal_data_writeback "$rootdevice"
if [[ $ROOTFS_TYPE == btrfs && $BTRFS_COMPRESSION != none ]]; then
local fscreateopt="-o compress-force=${BTRFS_COMPRESSION}"
fi
# END: Options for specific filesystems
#
wait_for_disk_sync "after mkfs" # force writes to be really flushed
# store in readonly global for usage in later hooks
@ -287,6 +306,9 @@ function prepare_partitions() {
echo "/dev/nfs / nfs defaults 0 0" >> $SDCARD/etc/fstab
fi
##
## BOOT (XBOOTLDR) PARTITION
##
if [[ -n $bootpart ]]; then
display_alert "Creating /boot" "$bootfs on ${LOOP}p${bootpart}"
check_loop_device "${LOOP}p${bootpart}"
@ -295,6 +317,10 @@ function prepare_partitions() {
run_host_command_logged mount ${LOOP}p${bootpart} $MOUNT/boot/
echo "UUID=$(blkid -s UUID -o value ${LOOP}p${bootpart}) /boot ${mkfs[$bootfs]} defaults${mountopts[$bootfs]} 0 2" >> $SDCARD/etc/fstab
fi
##
## EFI PARTITION
##
if [[ -n $uefipart ]]; then
display_alert "Creating EFI partition" "FAT32 ${UEFI_MOUNT_POINT} on ${LOOP}p${uefipart} label ${UEFI_FS_LABEL}"
check_loop_device "${LOOP}p${uefipart}"
@ -311,6 +337,9 @@ function prepare_partitions() {
echo "UUID=$(blkid -s UUID -o value ${LOOP}p${uefipart}) ${UEFI_MOUNT_POINT} vfat defaults 0 2" >> $SDCARD/etc/fstab
fi
fi
##
## END OF PARTITION CREATION
##
display_alert "Writing /tmp as tmpfs in chroot fstab" "$SDCARD/etc/fstab" "debug"
echo "tmpfs /tmp tmpfs defaults,nosuid 0 0" >> $SDCARD/etc/fstab