105 lines
1.6 KiB
Bash
Executable file
105 lines
1.6 KiB
Bash
Executable file
#! /bin/zsh
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setopt extendedglob
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function die() {
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echo "!!! $1"
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exit 1
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}
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### read the config file
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source /etc/btv/config
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### verify keyfile sanity
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if [[ ! -a "${KEYFILE}" ]]; then
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echo "The keyfile (${KEYFILE}) does not exist."
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exit 2
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fi
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KEYFILE_OWNER=$(stat -c "%u" $KEYFILE)
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KEYFILE_ACCESS=$(stat -c "%a" $KEYFILE)
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if [[ ${KEYFILE_OWNER} -ne 0 ]]; then
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echo "The keyfile (${KEYFILE}) is owned by UID ${KEYFILE_OWNER}, it should be 0 (root)."
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exit 2
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fi
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if [[ ${KEYFILE_ACCESS} -ne 600 ]]; then
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echo "The keyfile (${KEYFILE}) has permissions ${KEYFILE_ACCESS}, it should be 600 (rw-------)."
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exit 2
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fi
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VERB="$1"
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shift
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function drop_snap {
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SNAP="${1}"
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for S in "${SNAP}/"*
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do
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btrfs subvolume delete "$S"
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done
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rmdir "${SNAP}"
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}
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case "$VERB" in
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(snap*)
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T="$(date +%Y-%m-%d.%H%M%S)"
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SNAP="${SNAP_DIR}/${T}"
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echo "Creating snapshot ${SNAP}"
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mkdir "${SNAP}" || die "failed to mkdir ${SNAP}"
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cd "${SUBVOL_DIR}" || die "failed to cd ${SUBVOL_DIR}"
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for SUB in ^${SUBVOL_IGNORE_PREFIX}*
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do
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btrfs subvolume snapshot -r "${SUB}" "${SNAP}/${SUB}" || die "failed to btrfs snap ${SUB}"
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done
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;;
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(list)
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cd "${SNAP_DIR}"
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for SNAP in *
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do
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if [[ -f "${SNAP}/streamed" ]]; then
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printf "S"
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else
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printf " "
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fi
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done
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echo
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echo "S = streamed to storage"
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echo "R = scheduled for removal"
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;;
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(drop)
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SNAP="${SNAP_DIR}/${1}"
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if [[ ! -d ${SNAP} ]]; then
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echo "Snapshot ${1} does not exist"
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exit 3
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fi
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echo "Dropping $SNAP"
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drop_snap "$SNAP"
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;;
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(clean*)
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echo ">>> gc"
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;;
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(stream)
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echo ">>> stream $1"
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;;
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(*)
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echo "Unknown verb: ${VERB}"
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exit 3
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;;
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esac
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