ceph-csi/vendor/k8s.io/kubernetes/examples/volumes/flexvolume/lvm
Serguei Bezverkhi 7b24313bd6 vendor files
2018-01-10 13:42:26 -05:00

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