Merge pull request #188 from saveriomiroddi/add_script_functions_hotswapping
Add script functions hot swapping
This commit is contained in:
commit
72f1f38970
269
install-zfs.sh
269
install-zfs.sh
@ -43,6 +43,8 @@ v_suitable_disks=() # (/dev/by-id/disk_id, ...); scope: find_suitable_d
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# Note that Linux Mint is "Linuxmint" from v20 onwards. This actually helps, since some operations are
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# specific to it.
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c_hotswap_file=$PWD/install-zfs.hotswap.sh # see hotswap() for an explanation.
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c_bpool_name=bpool
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c_ppa=ppa:jonathonf/zfs
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c_efi_system_partition_size=512 # megabytes
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@ -107,49 +109,74 @@ c_udevadm_settle_timeout=10 # seconds
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# HELPER FUNCTIONS #############################################################
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# Chooses a function and invokes it depending on the O/S distribution.
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# Invoke a function, with a primitive dynamic dispatch based on the distribution.
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#
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# Example:
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# Format: `invoke "function" [--optional]`.
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#
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# A target function must exist, otherwise a error is raised, unless `--optional` is specified.
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# `--optional` is useful when a step is specific to a single distribution, e.g. Debian's root password.
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#
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# Examples:
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#
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# $ function install_jail_zfs_packages { :; }
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# $ function install_jail_zfs_packages_Debian { :; }
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# $ distro_dependent_invoke "install_jail_zfs_packages"
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#
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# If the distribution is `Debian`, the second will be invoked, otherwise, the
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# first.
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#
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# If the function is invoked with `--noforce` as second parameter, and there is
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# no matching function:
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# If the distribution is `Debian`, the second will be invoked, otherwise, the first.
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#
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# $ function update_zed_cache_Ubuntu { :; }
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# $ distro_dependent_invoke "install_jail_zfs_packages" --noforce
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# $ distro_dependent_invoke "update_zed_cache" --optional
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#
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# then nothing happens. Without `--noforce`, this invocation will cause an
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# error.
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# If the distribution is `Debian`, nothing will happen.
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#
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function distro_dependent_invoke {
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local distro_specific_fx_name="$1_$v_linux_distribution"
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# $ function update_zed_cache_Ubuntu { :; }
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# $ distro_dependent_invoke "update_zed_cache"
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#
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# If the distribution is `Debian`, an error will be raised.
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#
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function invoke {
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local base_fx_name=$1
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local distro_specific_fx_name=$1_$v_linux_distribution
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local invoke_option=${2:-}
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if [[ ! $invoke_option =~ ^(|--optional)$ ]]; then
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>&2 echo "Invalid invoke() option: $invoke_option"
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exit 1
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fi
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hot_swap_script
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# Invoke it regardless when it's not optional.
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if declare -f "$distro_specific_fx_name" > /dev/null; then
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print_step_info_header "$distro_specific_fx_name"
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"$distro_specific_fx_name"
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else
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if ! declare -f "$1" > /dev/null && [[ "${2:-}" == "--noforce" ]]; then
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: # do nothing
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else
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"$1"
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fi
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elif declare -f "$base_fx_name" > /dev/null || [[ ! $invoke_option == "--optional" ]]; then
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print_step_info_header "$base_fx_name"
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"$base_fx_name"
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fi
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}
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# Tee-hee-hee!!
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#
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# This is extremely useful for debugging long procedures. Since bash scripts can't be modified while
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# running, this allows the dev to create a snapshot, and if the script fails after that, resume and
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# add the hotswap script, so that the new code will be loaded automatically.
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#
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function hot_swap_script {
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if [[ -f $c_hotswap_file ]]; then
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source "$c_hotswap_file"
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fi
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}
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# shellcheck disable=SC2120 # allow parameters passing even if no calls pass any
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function print_step_info_header {
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local function_name=$1
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echo -n "
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###############################################################################
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# ${FUNCNAME[1]}"
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[[ "${1:-}" != "" ]] && echo -n " $1" || true
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echo "
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# $function_name
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###############################################################################
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"
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}
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@ -231,8 +258,6 @@ Root pool default create options: '"${c_default_rpool_create_options[*]/#-/$'\n'
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}
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function activate_debug {
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print_step_info_header
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mkdir -p "$c_log_dir"
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exec 5> "$c_install_log"
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@ -251,8 +276,6 @@ function set_distribution_data {
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}
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function store_os_distro_information {
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print_step_info_header
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lsb_release --all > "$c_os_information_log"
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# Madness, in order not to force the user to invoke "sudo -E".
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@ -276,8 +299,6 @@ function store_running_processes {
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}
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function check_prerequisites {
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print_step_info_header
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local distro_version_regex=\\b${v_linux_version//./\\.}\\b
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if [[ ! -d /sys/firmware/efi ]]; then
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@ -308,8 +329,6 @@ function check_prerequisites {
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}
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function display_intro_banner {
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print_step_info_header
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local dialog_message='Hello!
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This script will prepare the ZFS pools on the system, install Ubuntu, and configure the boot.
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@ -341,8 +360,6 @@ In such cases, the module building may fail abruptly, either without visible err
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}
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function save_disks_log {
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print_step_info_header
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# shellcheck disable=SC2012 # `ls` may clean the output, but in this case, it doesn't matter
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ls -l /dev/disk/by-id | tail -n +2 | perl -lane 'print "@F[8..10]"' > "$c_disks_log"
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@ -360,8 +377,6 @@ LOG
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}
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function find_suitable_disks {
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print_step_info_header
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# In some freaky cases, `/dev/disk/by-id` is not up to date, so we refresh. One case is after
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# starting a VirtualBox VM that is a full clone of a suspended VM with snapshots.
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#
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@ -426,8 +441,6 @@ If you think this is a bug, please open an issue on https://github.com/saveriomi
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# install_host_packages() and install_host_packages_UbuntuServer().
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#
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function set_zfs_ppa_requirement {
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print_step_info_header
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apt update
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local zfs_package_version
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@ -450,25 +463,19 @@ function set_zfs_ppa_requirement_Debian {
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# to it being incorrectly setup).
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#
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function set_zfs_ppa_requirement_Linuxmint {
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print_step_info_header
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perl -i -pe 's/^(deb cdrom)/# $1/' /etc/apt/sources.list
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set_zfs_ppa_requirement
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invoke "set_zfs_ppa_requirement"
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}
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# By using a FIFO, we avoid having to hide statements like `echo $v_passphrase | zpoool create ...`
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# from the logs.
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#
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function create_passphrase_named_pipe {
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print_step_info_header
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mkfifo "$c_passphrase_named_pipe"
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}
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function register_exit_hook {
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print_step_info_header
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function _exit_hook {
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rm -f "$c_passphrase_named_pipe"
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@ -517,8 +524,6 @@ export ZFS_FREE_TAIL_SPACE=12
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}
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function select_disks {
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print_step_info_header
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if [[ "${ZFS_SELECTED_DISKS:-}" != "" ]]; then
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mapfile -d, -t v_selected_disks < <(echo -n "$ZFS_SELECTED_DISKS")
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else
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@ -558,8 +563,6 @@ Devices with mounted partitions, cdroms, and removable devices are not displayed
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}
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function select_pools_raid_type {
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print_step_info_header
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local raw_pools_raid_type=
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if [[ -v ZFS_POOLS_RAID_TYPE ]]; then
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@ -603,8 +606,6 @@ function select_pools_raid_type {
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}
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function ask_root_password_Debian {
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print_step_info_header
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set +x
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if [[ ${ZFS_DEBIAN_ROOT_PASSWORD:-} != "" ]]; then
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v_root_password="$ZFS_DEBIAN_ROOT_PASSWORD"
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@ -623,8 +624,6 @@ function ask_root_password_Debian {
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}
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function ask_encryption {
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print_step_info_header
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set +x
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if [[ -v ZFS_PASSPHRASE ]]; then
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@ -655,8 +654,6 @@ Leave blank to keep encryption disabled.
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}
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function ask_boot_partition_size {
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print_step_info_header
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if [[ ${ZFS_BOOT_PARTITION_SIZE:-} != "" ]]; then
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v_boot_partition_size=$ZFS_BOOT_PARTITION_SIZE
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else
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@ -675,8 +672,6 @@ Supported formats: '512M', '3G'" 30 100 ${c_default_boot_partition_size}M 3>&1 1
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}
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function ask_swap_size {
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print_step_info_header
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if [[ ${ZFS_SWAP_SIZE:-} != "" ]]; then
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v_swap_size=$ZFS_SWAP_SIZE
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else
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@ -693,8 +688,6 @@ function ask_swap_size {
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}
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function ask_free_tail_space {
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print_step_info_header
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if [[ ${ZFS_FREE_TAIL_SPACE:-} != "" ]]; then
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v_free_tail_space=$ZFS_FREE_TAIL_SPACE
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else
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@ -719,8 +712,6 @@ For detailed informations, see the wiki page: https://github.com/saveriomiroddi/
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}
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function ask_rpool_name {
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print_step_info_header
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if [[ ${ZFS_RPOOL_NAME:-} != "" ]]; then
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v_rpool_name=$ZFS_RPOOL_NAME
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else
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@ -737,8 +728,6 @@ function ask_rpool_name {
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}
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function ask_pool_create_options {
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print_step_info_header
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local bpool_create_options_message='Insert the create options for the boot pool
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The mount-related options are automatically added, and must not be specified.'
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@ -759,8 +748,6 @@ The encryption/mount-related options are automatically added, and must not be sp
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}
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function install_host_packages {
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print_step_info_header
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if [[ $v_use_ppa == "1" ]]; then
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if [[ ${ZFS_SKIP_LIVE_ZFS_MODULE_INSTALL:-} != "1" ]]; then
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add-apt-repository --yes "$c_ppa"
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@ -785,8 +772,6 @@ function install_host_packages {
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}
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function install_host_packages_Debian {
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print_step_info_header
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if [[ ${ZFS_SKIP_LIVE_ZFS_MODULE_INSTALL:-} != "1" ]]; then
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echo "zfs-dkms zfs-dkms/note-incompatible-licenses note true" | debconf-set-selections
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@ -807,27 +792,21 @@ function install_host_packages_Debian {
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# Differently from Ubuntu, Mint doesn't have the package installed in the live version.
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#
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function install_host_packages_Linuxmint {
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print_step_info_header
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apt install --yes zfsutils-linux
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install_host_packages
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invoke "install_host_packages"
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}
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function install_host_packages_elementary {
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print_step_info_header
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if [[ ${ZFS_SKIP_LIVE_ZFS_MODULE_INSTALL:-} != "1" ]]; then
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apt update
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apt install --yes software-properties-common
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fi
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install_host_packages
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invoke "install_host_packages"
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}
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function install_host_packages_UbuntuServer {
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print_step_info_header
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if [[ $v_use_ppa != "1" ]]; then
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apt install --yes zfsutils-linux efibootmgr
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@ -859,8 +838,6 @@ function install_host_packages_UbuntuServer {
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}
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function setup_partitions {
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print_step_info_header
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local required_tail_space=$((v_free_tail_space > c_temporary_volume_size ? v_free_tail_space : c_temporary_volume_size))
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for selected_disk in "${v_selected_disks[@]}"; do
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@ -916,8 +893,6 @@ function setup_partitions {
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}
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function install_operating_system {
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print_step_info_header
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local dialog_message='The Ubuntu GUI installer will now be launched.
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Proceed with the configuration as usual, then, at the partitioning stage:
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@ -959,8 +934,6 @@ Proceed with the configuration as usual, then, at the partitioning stage:
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}
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function install_operating_system_Debian {
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print_step_info_header
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# The temporary volume size displayed is an approximation of the format used by the installer,
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# but it's acceptable - the complexity required is not worth (eg. converting hypothetical units,
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# etc.).
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@ -1013,8 +986,6 @@ CONF
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}
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function install_operating_system_UbuntuServer {
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print_step_info_header
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# O/S Installation
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#
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# Subiquity is designed to prevent the user from opening a terminal, which is (to say the least)
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@ -1056,8 +1027,6 @@ You can switch anytime to this terminal, and back, in order to read the instruct
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}
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function custom_install_operating_system {
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print_step_info_header
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sudo "$ZFS_OS_INSTALLATION_SCRIPT"
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}
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@ -1108,8 +1077,6 @@ function create_pools {
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}
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function create_swap_volume {
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print_step_info_header
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if [[ $v_swap_size -gt 0 ]]; then
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zfs create \
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-V "${v_swap_size}G" -b "$(getconf PAGESIZE)" \
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@ -1121,15 +1088,11 @@ function create_swap_volume {
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}
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function copy_zpool_cache {
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print_step_info_header
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mkdir -p "$c_zfs_mount_dir/etc/zfs"
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cp /etc/zfs/zpool.cache "$c_zfs_mount_dir/etc/zfs/"
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}
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function sync_os_temp_installation_dir_to_rpool {
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print_step_info_header
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# On Ubuntu Server, `/boot/efi` and `/cdrom` (!!!) are mounted, but they're not needed.
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#
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local mount_dir_submounts
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@ -1162,8 +1125,6 @@ function sync_os_temp_installation_dir_to_rpool {
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}
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function remove_temp_partition_and_expand_rpool {
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print_step_info_header
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if (( v_free_tail_space < c_temporary_volume_size )); then
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if [[ $v_free_tail_space -eq 0 ]]; then
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local resize_reference=100%
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@ -1198,8 +1159,6 @@ function remove_temp_partition_and_expand_rpool {
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}
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function prepare_jail {
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print_step_info_header
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for virtual_fs_dir in proc sys dev; do
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mount --rbind "/$virtual_fs_dir" "$c_zfs_mount_dir/$virtual_fs_dir"
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done
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@ -1210,8 +1169,6 @@ function prepare_jail {
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# See install_host_packages() for some comments.
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#
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function install_jail_zfs_packages {
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print_step_info_header
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if [[ $v_use_ppa == "1" ]]; then
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chroot_execute "add-apt-repository --yes $c_ppa"
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@ -1236,8 +1193,6 @@ function install_jail_zfs_packages {
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}
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function install_jail_zfs_packages_Debian {
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print_step_info_header
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chroot_execute 'echo "deb http://deb.debian.org/debian buster main contrib" >> /etc/apt/sources.list'
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chroot_execute 'echo "deb-src http://deb.debian.org/debian buster main contrib" >> /etc/apt/sources.list'
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@ -1257,26 +1212,20 @@ APT'
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}
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function install_jail_zfs_packages_elementary {
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print_step_info_header
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chroot_execute "apt install --yes software-properties-common"
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install_jail_zfs_packages
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invoke "install_jail_zfs_packages"
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}
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function install_jail_zfs_packages_UbuntuServer {
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print_step_info_header
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if [[ $v_use_ppa != "1" ]]; then
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chroot_execute "apt install --yes zfsutils-linux zfs-initramfs grub-efi-amd64-signed shim-signed"
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else
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install_jail_zfs_packages
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invoke "install_jail_zfs_packages"
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fi
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}
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function prepare_efi_partition {
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print_step_info_header
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# The other mounts are configured/synced in the EFI partitions sync stage.
|
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#
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chroot_execute "echo /dev/disk/by-uuid/$(blkid -s UUID -o value "${v_selected_disks[0]}"-part1) /boot/efi vfat defaults 0 0 > /etc/fstab"
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@ -1288,8 +1237,6 @@ function prepare_efi_partition {
|
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}
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function configure_and_update_grub {
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print_step_info_header
|
||||
|
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chroot_execute "perl -i -pe 's/GRUB_CMDLINE_LINUX_DEFAULT=\"\K/init_on_alloc=0 /' /etc/default/grub"
|
||||
|
||||
# Silence warning during the grub probe (source: https://git.io/JenXF).
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||||
@ -1316,8 +1263,6 @@ function configure_and_update_grub {
|
||||
}
|
||||
|
||||
function sync_efi_partitions {
|
||||
print_step_info_header
|
||||
|
||||
for ((i = 1; i < ${#v_selected_disks[@]}; i++)); do
|
||||
local synced_efi_partition_path="/boot/efi$((i + 1))"
|
||||
|
||||
@ -1340,14 +1285,10 @@ function sync_efi_partitions {
|
||||
# See issue https://github.com/saveriomiroddi/zfs-installer/issues/110.
|
||||
#
|
||||
function update_initramfs {
|
||||
print_step_info_header
|
||||
|
||||
chroot_execute "update-initramfs -u"
|
||||
}
|
||||
|
||||
function fix_filesystem_mount_ordering {
|
||||
print_step_info_header
|
||||
|
||||
chroot_execute "mkdir /etc/zfs/zfs-list.cache"
|
||||
chroot_execute "touch /etc/zfs/zfs-list.cache/$c_bpool_name /etc/zfs/zfs-list.cache/$v_rpool_name"
|
||||
|
||||
@ -1406,8 +1347,6 @@ function fix_filesystem_mount_ordering {
|
||||
# The code is a straight copy of the `fstrim` service.
|
||||
#
|
||||
function configure_pools_trimming {
|
||||
print_step_info_header
|
||||
|
||||
chroot_execute "cat > /lib/systemd/system/zfs-trim.service << UNIT
|
||||
[Unit]
|
||||
Description=Discard unused ZFS blocks
|
||||
@ -1438,15 +1377,11 @@ TIMER"
|
||||
}
|
||||
|
||||
function configure_remaining_settings {
|
||||
print_step_info_header
|
||||
|
||||
[[ $v_swap_size -gt 0 ]] && chroot_execute "echo /dev/zvol/$v_rpool_name/swap none swap discard 0 0 >> /etc/fstab" || true
|
||||
chroot_execute "echo RESUME=none > /etc/initramfs-tools/conf.d/resume"
|
||||
}
|
||||
|
||||
function prepare_for_system_exit {
|
||||
print_step_info_header
|
||||
|
||||
for virtual_fs_dir in dev sys proc; do
|
||||
umount --recursive --force --lazy "$c_zfs_mount_dir/$virtual_fs_dir"
|
||||
done
|
||||
@ -1479,8 +1414,6 @@ function prepare_for_system_exit {
|
||||
}
|
||||
|
||||
function display_exit_banner {
|
||||
print_step_info_header
|
||||
|
||||
local dialog_message="The system has been successfully prepared and installed.
|
||||
|
||||
You now need to perform a hard reset, then enjoy your ZFS system :-)"
|
||||
@ -1496,59 +1429,59 @@ if [[ $# -ne 0 ]]; then
|
||||
display_help_and_exit
|
||||
fi
|
||||
|
||||
activate_debug
|
||||
set_distribution_data
|
||||
distro_dependent_invoke "store_os_distro_information"
|
||||
store_running_processes
|
||||
check_prerequisites
|
||||
display_intro_banner
|
||||
check_system_memory
|
||||
save_disks_log
|
||||
find_suitable_disks
|
||||
distro_dependent_invoke "set_zfs_ppa_requirement"
|
||||
register_exit_hook
|
||||
create_passphrase_named_pipe
|
||||
invoke "activate_debug"
|
||||
invoke "set_distribution_data"
|
||||
invoke "store_os_distro_information"
|
||||
invoke "store_running_processes"
|
||||
invoke "check_prerequisites"
|
||||
invoke "display_intro_banner"
|
||||
invoke "check_system_memory"
|
||||
invoke "save_disks_log"
|
||||
invoke "find_suitable_disks"
|
||||
invoke "set_zfs_ppa_requirement"
|
||||
invoke "register_exit_hook"
|
||||
invoke "create_passphrase_named_pipe"
|
||||
|
||||
select_disks
|
||||
select_pools_raid_type
|
||||
distro_dependent_invoke "ask_root_password" --noforce
|
||||
ask_encryption
|
||||
ask_boot_partition_size
|
||||
ask_swap_size
|
||||
ask_free_tail_space
|
||||
ask_rpool_name
|
||||
ask_pool_create_options
|
||||
invoke "select_disks"
|
||||
invoke "select_pools_raid_type"
|
||||
invoke "ask_root_password" --optional
|
||||
invoke "ask_encryption"
|
||||
invoke "ask_boot_partition_size"
|
||||
invoke "ask_swap_size"
|
||||
invoke "ask_free_tail_space"
|
||||
invoke "ask_rpool_name"
|
||||
invoke "ask_pool_create_options"
|
||||
|
||||
distro_dependent_invoke "install_host_packages"
|
||||
setup_partitions
|
||||
invoke "install_host_packages"
|
||||
invoke "setup_partitions"
|
||||
|
||||
if [[ "${ZFS_OS_INSTALLATION_SCRIPT:-}" == "" ]]; then
|
||||
# Includes the O/S extra configuration, if necessary (network, root pwd, etc.)
|
||||
distro_dependent_invoke "install_operating_system"
|
||||
invoke "install_operating_system"
|
||||
|
||||
create_pools
|
||||
create_swap_volume
|
||||
copy_zpool_cache
|
||||
sync_os_temp_installation_dir_to_rpool
|
||||
remove_temp_partition_and_expand_rpool
|
||||
invoke "create_pools"
|
||||
invoke "create_swap_volume"
|
||||
invoke "copy_zpool_cache"
|
||||
invoke "sync_os_temp_installation_dir_to_rpool"
|
||||
invoke "remove_temp_partition_and_expand_rpool"
|
||||
else
|
||||
create_pools
|
||||
create_swap_volume
|
||||
copy_zpool_cache
|
||||
remove_temp_partition_and_expand_rpool
|
||||
invoke "create_pools"
|
||||
invoke "create_swap_volume"
|
||||
invoke "copy_zpool_cache"
|
||||
invoke "remove_temp_partition_and_expand_rpool"
|
||||
|
||||
custom_install_operating_system
|
||||
invoke "custom_install_operating_system"
|
||||
fi
|
||||
|
||||
prepare_jail
|
||||
distro_dependent_invoke "install_jail_zfs_packages"
|
||||
prepare_efi_partition
|
||||
configure_and_update_grub
|
||||
sync_efi_partitions
|
||||
update_initramfs
|
||||
fix_filesystem_mount_ordering
|
||||
configure_pools_trimming
|
||||
configure_remaining_settings
|
||||
invoke "prepare_jail"
|
||||
invoke "install_jail_zfs_packages"
|
||||
invoke "prepare_efi_partition"
|
||||
invoke "configure_and_update_grub"
|
||||
invoke "sync_efi_partitions"
|
||||
invoke "update_initramfs"
|
||||
invoke "fix_filesystem_mount_ordering"
|
||||
invoke "configure_pools_trimming"
|
||||
invoke "configure_remaining_settings"
|
||||
|
||||
prepare_for_system_exit
|
||||
display_exit_banner
|
||||
invoke "prepare_for_system_exit"
|
||||
invoke "display_exit_banner"
|
||||
|
Loading…
Reference in New Issue
Block a user