Files
PBX-Image-Script/fs_extract.sh
T
2026-07-13 11:23:39 -05:00

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#!/bin/bash
set -e
RED='\e[31m'
GREEN='\e[32m'
YELLOW='\e[33m'
RESET='\e[0m'
IMG_FILE="PBX-Test.img"
ROOT_LV_PATH="/dev/mapper/PBX--vg-root"
MOUNT_PATH="/mnt/debian"
VGROUP="PBX-vg"
main() {
root_check
trap 'echo "Status Code: $?"; cleanup;' EXIT
losetup -fP $IMG_FILE
LOOP_DEVICE=$(losetup -l | grep $IMG_FILE | cut -d ' ' -f1)
echo $LOOP_DEVICE
vgchange -a y $VGROUP
mkdir -p $MOUNT_PATH
mount $ROOT_LV_PATH $MOUNT_PATH
mount "${LOOP_DEVICE}p2" "$MOUNT_PATH/boot"
mount "${LOOP_DEVICE}p1" "$MOUNT_PATH/boot/efi"
KERNEL_VERSION=$(get_kernel_version)
tar -I zstd -c -C "${MOUNT_PATH}" --warning=no-file-ignored . | pv >"PBX-Image-${KERNEL_VERSION}.tar.zst"
}
root_check() {
if [[ $EUID -ne 0 ]]; then
echo -e "${RED}You must be root to do this." 1>&2
exit 77
fi
}
get_kernel_version() {
local kernel_file=$(ls -1 "$MOUNT_PATH/boot/vmlinuz-"* 2>/dev/null | head -n1)
if [[ -n "$kernel_file" ]]; then
basename "$kernel_file" | sed 's/vmlinuz-//'
else
echo "unknown"
fi
}
cleanup() {
if [[ $NO_CLEANUP = true ]]; then
echo -e "${YELLOW}No cleanup specified. Make sure to manually clean mounts.${RESET}" 1>&2
exit 100
fi
echo "Cleaning Mounts"
umount -lf "${MOUNT_PATH}/boot/efi" 2>/dev/null || true
umount -lf "${MOUNT_PATH}/boot" 2>/dev/null || true
umount -lf "${MOUNT_PATH}" 2>/dev/null || true
vgchange -a n $VGROUP
echo -e "${GREEN}Clean.${RESET}"
losetup -D
}
main