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format and mount drives
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#!/bin/bash | |
set -x | |
# An set of disks to ignore from partitioning and formatting | |
BLACKLIST="/dev/sda" | |
# Base directory to hold the data* files | |
DATA_BASE="/mnt" | |
usage() { | |
echo "Usage: $(basename $0) <new disk>" | |
} | |
scan_for_new_disks() { | |
# Looks for unpartitioned disks | |
declare -a RET | |
DEVS=($(ls -1 /dev/sd*|egrep -v "${BLACKLIST}"|egrep -v "[0-9]$")) | |
for DEV in "${DEVS[$@]}"; | |
do | |
RET+="${DEV} " | |
done | |
echo "${RET}" | |
} | |
get_next_mountpoint() { | |
DIRS=($(ls -1d ${DATA_BASE}/data* 2>&1| sort --version-sort)) | |
if [ -z "${DIRS[0]}" ]; | |
then | |
echo "${DATA_BASE}/data1" | |
return | |
else | |
IDX=$(echo "${DIRS[${#DIRS[$@]}-1]}"|tr -d "[a-zA-Z/]" ) | |
IDX=$(( ${IDX} + 1 )) | |
echo "${DATA_BASE}/data${IDX}" | |
fi | |
} | |
add_to_fstab() { | |
UUID=${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 | |
} | |
is_partitioned() { | |
# Checks if there is a valid partition table on the | |
# specified disk | |
OUTPUT=$(sfdisk -l ${1} 2>&1) | |
grep "No partitions found" "${OUTPUT}" >/dev/null 2>&1 | |
return "${?}" | |
} | |
has_filesystem() { | |
DEVICE=${1} | |
OUTPUT=$(file -L -s ${DEVICE}) | |
grep filesystem <<< "${OUTPUT}" > /dev/null 2>&1 | |
return ${?} | |
} | |
do_partition() { | |
# This function creates one (1) primary partition on the | |
# disk, using all available space | |
DISK=${1} | |
echo "n | |
p | |
1 | |
w"| fdisk "${DISK}" > /dev/null 2>&1 | |
# | |
# 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 ${DISK}" >&2 | |
echo "I cannot continue" >&2 | |
exit 2 | |
fi | |
} | |
DISKS=($(scan_for_new_disks)) | |
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 5 | |
mkfs.ext4 -m 0 -F -E lazy_itable_init=0,lazy_journal_init=0,discard ${PARTITION} | |
fi | |
MOUNTPOINT=$(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 ${MOUNTPOINT}" | |
mount -o discard,defaults "${DISK}" "${MOUNTPOINT}" | |
chmod a+w "${MOUNTPOINT}" | |
done |
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credit - https://gist.github.com/trentmswanson/9c22bb71182e982bd36f