/
vm-disk-utils-0.1.sh
317 lines (279 loc) · 8.61 KB
/
vm-disk-utils-0.1.sh
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
#!/bin/bash
# The MIT License (MIT)
#
# Copyright (c) 2015 Microsoft Azure
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
# Script Name: vm-disk-utils.sh
# Author: Trent Swanson - Full Scale 180 Inc github:(trentmswanson)
# Version: 0.1
# Last Modified By: Trent Swanson
# Description:
# This script automates the partitioning and formatting of data disks
# Data disks can be partitioned and formatted as seperate disks or in a RAID0 configuration
# The scrtip will scan for unpartitioined and unformatted data disks and partition, format, and add fstab entries
# Parameters :
# 1 - b: The base directory for mount points (default: /datadisks)
# 2 - s Create a striped RAID0 Array (No redundancy)
# 3 - h Help
# Note :
# This script has only been tested on Ubuntu 12.04 LTS and must be root
help()
{
echo "Usage: $(basename $0) [-b data_base] [-h] [-s]"
echo ""
echo "Options:"
echo " -b base directory for mount points (default: /datadisks)"
echo " -h this help message"
echo " -s create a striped RAID array (no redundancy)"
}
log()
{
# Un-comment the following if you would like to enable logging to a service
#curl -X POST -H "content-type:text/plain" --data-binary "${HOSTNAME} - $1" https://logs-01.loggly.com/inputs/<key>/tag/es-extension,${HOSTNAME}
echo "$1"
}
if [ "${UID}" -ne 0 ];
then
log "Script executed without root permissions"
echo "You must be root to run this program." >&2
exit 3
fi
#A set of disks to ignore from partitioning and formatting
BLACKLIST="/dev/sda|/dev/sdb"
# Base path for data disk mount points
DATA_BASE="/datadisks"
while getopts b:sh optname; do
log "Option $optname set with value ${OPTARG}"
case ${optname} in
b) #set clsuter name
DATA_BASE=${OPTARG}
;;
s) #Partition and format data disks as raid set
RAID_CONFIGURATION=1
;;
h) #show help
help
exit 2
;;
\?) #unrecognized option - show help
echo -e \\n"Option -${BOLD}$OPTARG${NORM} not allowed."
help
exit 2
;;
esac
done
get_next_md_device() {
shopt -s extglob
LAST_DEVICE=$(ls -1 /dev/md+([0-9]) 2>/dev/null|sort -n|tail -n1)
if [ -z "${LAST_DEVICE}" ]; then
NEXT=/dev/md0
else
NUMBER=$((${LAST_DEVICE/\/dev\/md/}))
NEXT=/dev/md${NUMBER}
fi
echo ${NEXT}
}
is_partitioned() {
OUTPUT=$(partx -s ${1} 2>&1)
egrep "partition table does not contains usable partitions|failed to read partition table" <<< "${OUTPUT}" >/dev/null 2>&1
if [ ${?} -eq 0 ]; then
return 1
else
return 0
fi
}
has_filesystem() {
DEVICE=${1}
OUTPUT=$(file -L -s ${DEVICE})
grep filesystem <<< "${OUTPUT}" > /dev/null 2>&1
return ${?}
}
scan_for_new_disks() {
# Looks for unpartitioned disks
declare -a RET
DEVS=($(ls -1 /dev/sd*|egrep -v "${BLACKLIST}"|egrep -v "[0-9]$"))
for DEV in "${DEVS[@]}";
do
# The disk will be considered a candidate for partitioning
# and formatting if it does not have a sd?1 entry or
# if it does have an sd?1 entry and does not contain a filesystem
is_partitioned "${DEV}"
if [ ${?} -eq 0 ];
then
has_filesystem "${DEV}1"
if [ ${?} -ne 0 ];
then
RET+=" ${DEV}"
fi
else
RET+=" ${DEV}"
fi
done
echo "${RET}"
}
get_next_mountpoint() {
DIRS=$(ls -1d ${DATA_BASE}/disk* 2>/dev/null| sort --version-sort)
MAX=$(echo "${DIRS}"|tail -n 1 | tr -d "[a-zA-Z/]")
if [ -z "${MAX}" ];
then
echo "${DATA_BASE}/disk1"
return
fi
IDX=1
while [ "${IDX}" -lt "${MAX}" ];
do
NEXT_DIR="${DATA_BASE}/disk${IDX}"
if [ ! -d "${NEXT_DIR}" ];
then
echo "${NEXT_DIR}"
return
fi
IDX=$(( ${IDX} + 1 ))
done
IDX=$(( ${MAX} + 1))
echo "${DATA_BASE}/disk${IDX}"
}
add_to_fstab() {
UUID=${1}
MOUNTPOINT=${2}
grep "${UUID}" /etc/fstab >/dev/null 2>&1
if [ ${?} -eq 0 ];
then
echo "Not adding ${UUID} to fstab again (it's already there!)"
else
LINE="UUID=\"${UUID}\"\t${MOUNTPOINT}\text4\tnoatime,nodiratime,nodev,noexec,nosuid\t1 2"
echo -e "${LINE}" >> /etc/fstab
fi
}
do_partition() {
# This function creates one (1) primary partition on the
# disk, using all available space
_disk=${1}
_type=${2}
if [ -z "${_type}" ]; then
# default to Linux partition type (ie, ext3/ext4/xfs)
_type=83
fi
echo "n
p
1
t
${_type}
w"| fdisk "${_disk}"
#
# Use the bash-specific $PIPESTATUS to ensure we get the correct exit code
# from fdisk and not from echo
if [ ${PIPESTATUS[1]} -ne 0 ];
then
echo "An error occurred partitioning ${_disk}" >&2
echo "I cannot continue" >&2
exit 2
fi
}
#end do_partition
scan_partition_format()
{
log "Begin scanning and formatting data disks"
DISKS=($(scan_for_new_disks))
if [ "${#DISKS}" -eq 0 ];
then
log "No unpartitioned disks without filesystems detected"
return
fi
echo "Disks are ${DISKS[@]}"
for DISK in "${DISKS[@]}";
do
echo "Working on ${DISK}"
is_partitioned ${DISK}
if [ ${?} -ne 0 ];
then
echo "${DISK} is not partitioned, partitioning"
do_partition ${DISK}
fi
PARTITION=$(fdisk -l ${DISK}|grep -A 1 Device|tail -n 1|awk '{print $1}')
has_filesystem ${PARTITION}
if [ ${?} -ne 0 ];
then
echo "Creating filesystem on ${PARTITION}."
# echo "Press Ctrl-C if you don't want to destroy all data on ${PARTITION}"
# sleep 10
mkfs -j -t ext4 ${PARTITION}
fi
MOUNTPOINT=$(get_next_mountpoint)
echo "Next mount point appears to be ${MOUNTPOINT}"
[ -d "${MOUNTPOINT}" ] || mkdir -p "${MOUNTPOINT}"
read UUID FS_TYPE < <(blkid -u filesystem ${PARTITION}|awk -F "[= ]" '{print $3" "$5}'|tr -d "\"")
add_to_fstab "${UUID}" "${MOUNTPOINT}"
echo "Mounting disk ${PARTITION} on ${MOUNTPOINT}"
mount "${MOUNTPOINT}"
done
}
create_striped_volume()
{
DISKS=(${@})
if [ "${#DISKS[@]}" -eq 0 ];
then
log "No unpartitioned disks without filesystems detected"
return
fi
echo "Disks are ${DISKS[@]}"
declare -a PARTITIONS
for DISK in "${DISKS[@]}";
do
echo "Working on ${DISK}"
is_partitioned ${DISK}
if [ ${?} -ne 0 ];
then
echo "${DISK} is not partitioned, partitioning"
do_partition ${DISK} fd
fi
PARTITION=$(fdisk -l ${DISK}|grep -A 2 Device|tail -n 1|awk '{print $1}')
PARTITIONS+=("${PARTITION}")
done
MDDEVICE=$(get_next_md_device)
mdadm --create ${MDDEVICE} --level 0 --raid-devices ${#PARTITIONS[@]} ${PARTITIONS[*]}
MOUNTPOINT=$(get_next_mountpoint)
echo "Next mount point appears to be ${MOUNTPOINT}"
[ -d "${MOUNTPOINT}" ] || mkdir -p "${MOUNTPOINT}"
#Make a file system on the new device
STRIDE=128 #(512kB stripe size) / (4kB block size)
PARTITIONSNUM=${#PARTITIONS[@]}
STRIPEWIDTH=$((${STRIDE} * ${PARTITIONSNUM}))
mkfs.ext4 -b 4096 -E stride=${STRIDE},stripe-width=${STRIPEWIDTH},nodiscard "${MDDEVICE}"
read UUID FS_TYPE < <(blkid -u filesystem ${MDDEVICE}|awk -F "[= ]" '{print $3" "$5}'|tr -d "\"")
add_to_fstab "${UUID}" "${MOUNTPOINT}"
mount "${MOUNTPOINT}"
}
check_mdadm() {
dpkg -s mdadm >/dev/null 2>&1
if [ ${?} -ne 0 ]; then
apt-get -y update
DEBIAN_FRONTEND=noninteractive apt-get -y install mdadm --fix-missing
fi
}
# Create Partitions
DISKS=$(scan_for_new_disks)
if [ "$RAID_CONFIGURATION" -eq 1 ]; then
check_mdadm
create_striped_volume "${DISKS[@]}"
else
scan_partition_format
fi