mirror of
https://github.com/kenzok8/openwrt-packages.git
synced 2025-05-01 13:20:30 +08:00
115 lines
3.0 KiB
Bash
Executable File
115 lines
3.0 KiB
Bash
Executable File
#!/bin/sh
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handle_part() {
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case "$MOUNT" in
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"/overlay")
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return 1
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;;
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esac
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return 0
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}
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check_dir() {
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local data_root=$(uci -q get dockerd.globals.data_root)
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[ -n "$data_root" ] || return 0
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local block_dev=$(findmnt -T "$data_root" -v -o SOURCE | sed -n 2p)
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[ -n "$block_dev" ] || return 0
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[ "overlayfs:/overlay" = "$block_dev" ] && return 1
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local line=$(block info "$block_dev" 2>/dev/null)
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[ -n "$line" ] || return 0
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eval "${line##*: } handle_part ${line%%: *}"
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}
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migrate_check(){
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local dest="$1"
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[ -n "$dest" ] || {
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echo "dest dir not specified!" >&2
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return 1
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}
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local data_root="$2"
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[ -n "$data_root" ] || data_root=$(uci -q get dockerd.globals.data_root)
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[ -n "$data_root" ] || {
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echo "get docker data_root failed!" >&2
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return 1
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}
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[ "$data_root" = "/" ] || data_root="${data_root%%/}"
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[ "$dest" = "/" ] || dest="${dest%%/}"
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[ "$data_root" = "$dest" ] && {
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echo "dest dir is the same as data_root!" >&2
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return 1
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}
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[ 1 = "$FORCE" ] && return 0
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[ -e "$dest" ] || return 0
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[ -d "$dest" ] || {
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echo "$dest is existed and it's not a dir, use FORCE=1 to overwrite it" >&2
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return 2
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}
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[ 0 = "$(ls -A "$dest" | head -1 | wc -l)" ] || {
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echo "$dest is existed and it's not empty, use FORCE=1 to overwrite it" >&2
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return 2
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}
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return 0
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}
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migrate() {
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local dest="$1"
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local data_root=$(uci -q get dockerd.globals.data_root)
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[ -n "$data_root" ] || {
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echo "get docker data_root failed!" >&2
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return 1
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}
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[ "$data_root" = "/" ] || data_root="${data_root%%/}"
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[ "$dest" = "/" ] || dest="${dest%%/}"
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FORCE=1 migrate_check "$dest" "$data_root"
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local check_result=$?
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[ 0 = $check_result ] || return $check_result
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if [ "$UCI_ONLY" != 1 ]; then
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rm -rf "$dest"
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mkdir -p "$dest"
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echo "Copy $data_root to $dest ..."
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cp -a "$data_root/." "$dest/" || return 1
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fi
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echo "Change dockerd data_root to $dest and restart"
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uci set dockerd.globals.data_root="$dest"
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uci commit dockerd
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/etc/init.d/dockerd restart
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echo "Done"
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}
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action=${1}
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shift
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usage() {
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echo "usage: $1 sub-command [arguments...]"
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echo "where sub-command is one of:"
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echo " check_dir Check docker data_root is on extrnal disk"
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echo " migrate_check {target_dir} Check target_dir is valid for migration, return 2 if target_dir existed and not empty"
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echo " migrate {target_dir} Migrate docker data_root to target_dir"
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echo " change_dir {target_dir} Migrate docker data_root to target_dir but change dir only (no data copy)"
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}
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case $action in
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"check_dir")
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check_dir
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;;
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"migrate")
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migrate "$@"
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;;
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"migrate_check")
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migrate_check "$@"
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;;
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"change_dir")
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UCI_ONLY=1 migrate "$@"
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;;
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*)
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usage "$0"
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;;
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esac
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