153 lines
3 KiB
Text
153 lines
3 KiB
Text
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#!/bin/bash
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# Copyright 2015 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Notes:
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# - Please install "jq" package before using this driver.
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usage() {
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err "Invalid usage. Usage: "
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err "\t$0 init"
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err "\t$0 attach <json params>"
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err "\t$0 detach <mount device>"
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err "\t$0 mount <mount dir> <mount device> <json params>"
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err "\t$0 unmount <mount dir>"
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exit 1
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}
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err() {
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echo -ne $* 1>&2
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}
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log() {
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echo -ne $* >&1
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}
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ismounted() {
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MOUNT=`findmnt -n ${MNTPATH} 2>/dev/null | cut -d' ' -f1`
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if [ "${MOUNT}" == "${MNTPATH}" ]; then
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echo "1"
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else
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echo "0"
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fi
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}
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attach() {
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VOLUMEID=$(echo $1 | jq -r '.volumeID')
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SIZE=$(echo $1 | jq -r '.size')
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VG=$(echo $1|jq -r '.volumegroup')
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# LVM substitutes - with --
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VOLUMEID=`echo $VOLUMEID|sed s/-/--/g`
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VG=`echo $VG|sed s/-/--/g`
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DMDEV="/dev/mapper/${VG}-${VOLUMEID}"
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if [ ! -b "${DMDEV}" ]; then
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err "{\"status\": \"Failure\", \"message\": \"Volume ${VOLUMEID} does not exist\"}"
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exit 1
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fi
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log "{\"status\": \"Success\", \"device\":\"${DMDEV}\"}"
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exit 0
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}
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detach() {
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log "{\"status\": \"Success\"}"
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exit 0
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}
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domount() {
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MNTPATH=$1
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DMDEV=$2
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FSTYPE=$(echo $3|jq -r '.["kubernetes.io/fsType"]')
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if [ ! -b "${DMDEV}" ]; then
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err "{\"status\": \"Failure\", \"message\": \"${DMDEV} does not exist\"}"
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exit 1
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fi
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if [ $(ismounted) -eq 1 ] ; then
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log "{\"status\": \"Success\"}"
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exit 0
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fi
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VOLFSTYPE=`blkid -o udev ${DMDEV} 2>/dev/null|grep "ID_FS_TYPE"|cut -d"=" -f2`
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if [ "${VOLFSTYPE}" == "" ]; then
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mkfs -t ${FSTYPE} ${DMDEV} >/dev/null 2>&1
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if [ $? -ne 0 ]; then
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err "{ \"status\": \"Failure\", \"message\": \"Failed to create fs ${FSTYPE} on device ${DMDEV}\"}"
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exit 1
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fi
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fi
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mkdir -p ${MNTPATH} &> /dev/null
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mount ${DMDEV} ${MNTPATH} &> /dev/null
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if [ $? -ne 0 ]; then
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err "{ \"status\": \"Failure\", \"message\": \"Failed to mount device ${DMDEV} at ${MNTPATH}\"}"
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exit 1
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fi
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log "{\"status\": \"Success\"}"
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exit 0
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}
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unmount() {
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MNTPATH=$1
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if [ $(ismounted) -eq 0 ] ; then
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log "{\"status\": \"Success\"}"
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exit 0
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fi
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umount ${MNTPATH} &> /dev/null
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if [ $? -ne 0 ]; then
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err "{ \"status\": \"Failed\", \"message\": \"Failed to unmount volume at ${MNTPATH}\"}"
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exit 1
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fi
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rmdir ${MNTPATH} &> /dev/null
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log "{\"status\": \"Success\"}"
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exit 0
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}
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op=$1
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if [ "$op" = "init" ]; then
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log "{\"status\": \"Success\"}"
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exit 0
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fi
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if [ $# -lt 2 ]; then
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usage
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fi
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shift
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case "$op" in
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attach)
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attach $*
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;;
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detach)
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detach $*
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;;
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mount)
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domount $*
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;;
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unmount)
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unmount $*
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;;
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*)
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usage
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esac
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exit 1
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