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138 lines
4.0 KiB
138 lines
4.0 KiB
#!/bin/bash
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# command info
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if [ $# -eq 0 ] || [ "$1" = "-h" ] || [ "$1" = "-help" ]; then
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echo "managing additional data storage"
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echo "blitz.datadrive.sh [on|off]"
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echo "exits on 0 = needs reboot"
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exit 1
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fi
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# check if sudo
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if [ "$EUID" -ne 0 ]
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then echo "Please run as root (with sudo)"
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exit 1
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fi
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# update install sources
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echo "make sure BTRFS is installed ..."
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sudo apt-get install -y btrfs-tools
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echo ""
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# check on/off state
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dataStorageNotAvailableYet=$(sudo btrfs filesystem df /mnt/data 2>&1 | grep -c "ERROR: not a btrfs filesystem")
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if [ "$1" = "1" ] || [ "$1" = "on" ]; then
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echo "Trying to switch additional data storage on ..."
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if [ ${dataStorageNotAvailableYet} -eq 0 ]; then
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echo "FAIL -> data storage is already on"
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exit 1
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fi
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elif [ "$1" = "0" ] || [ "$1" = "off" ]; then
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echo "Trying to switch additional data storage off ..."
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if [ ${dataStorageNotAvailableYet} -eq 1 ]; then
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echo "FAIL -> data storage is already off"
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exit 1
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fi
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else
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echo "FAIL -> Parameter '${$1}' not known."
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exit 1
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fi
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###################
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# SWITCH ON
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###################
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if [ "$1" = "1" ] || [ "$1" = "on" ]; then
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# detect the two usb drives
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echo "Detecting two USB sticks/drives with same size ..."
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lsblk -o NAME | grep "^sd" | while read -r test1 ; do
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size1=$(lsblk -o NAME,SIZE -b | grep "^${test1}" | awk '$1=$1' | cut -d " " -f 2)
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echo "Checking : ${test1} size(${size1})"
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lsblk -o NAME | grep "^sd" | grep -v "${test1}" | while read -r test2 ; do
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size2=$(lsblk -o NAME,SIZE -b | grep "^${test2}" | awk '$1=$1' | cut -d " " -f 2)
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if [ "${size1}" = "${size2}" ]; then
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echo " MATCHING ${test2} size(${size2})"
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echo "${test1}" > .dev1.tmp
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echo "${test2}" > .dev2.tmp
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else
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echo " different ${test2} size(${size2})"
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fi
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done
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done
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dev1=$(cat .dev1.tmp)
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dev2=$(cat .dev2.tmp)
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rm -f .dev1.tmp
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rm -f .dev2.tmp
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echo "RESULTS:"
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echo "dev1(${dev1})"
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echo "dev2(${dev2})"
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echo ""
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# check that results are available
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if [ ${#dev1} -eq 0 ] || [ ${#dev2} -eq 0 ]; then
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echo "!! FAIL -> was not able to detect two devices with the same size"
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exit 1
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fi
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# check size (at least 4GB minus some tolerance)
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size=$(lsblk -o NAME,SIZE -b | grep "^${dev1}" | awk '$1=$1' | cut -d " " -f 2)
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if [ ${size} -lt 3500000000 ]; then
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echo "!! FAIL -> too small - additional storage needs to be bigger than 4GB"
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exit 1
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fi
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# check if devices are containing old data
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echo "Analysing Drives ..."
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nameDev1=$(lsblk -o NAME,LABEL | grep "^${dev1}" | awk '$1=$1' | cut -d " " -f 2)
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nameDev2=$(lsblk -o NAME,LABEL | grep "^${dev2}" | awk '$1=$1' | cut -d " " -f 2)
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if [ "${nameDev1}" = "DATASTORE" ] || [ "${nameDev2}" = "DATASTORE" ]; then
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# TODO: once implemented -> also make sure that dev1 is named "DATASTORE" and if 2nd is other -> format and add as raid
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echo "!! NOT IMPLEMENTED YET -> devices seem contain old data, because name is 'DATASTORE'"
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echo "if you dont care about that data: format devices devices on other computer with FAT(32) named TEST"
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exit 1
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fi
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echo "OK drives dont contain old data."
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echo ""
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# format first drive
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echo "Formatting /dev/${dev1} with BTRFS ..."
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sudo mkfs.btrfs -L DATASTORE -f /dev/${dev1}
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echo "OK"
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echo ""
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# mount the BTRFS drive
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echo "Mounting under /mnt/data ..."
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sudo mkdir -p /mnt/data
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sudo mount /dev/${dev1} /mnt/data
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echo "OK"
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echo ""
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# adding the second device
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echo "Adding the second device as RAID1 .."
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sudo btrfs device add -f /dev/${dev2} /mnt/data
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sudo btrfs filesystem balance start -dconvert=raid1 -mconvert=raid1 /mnt/data
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echo ""
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exit 0
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# adding the second device
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uuid=$(sudo btrfs filesystem show /mnt/data | grep "uuid:" | awk '$1=$1' | cut -d " " -f 4)
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fi
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###################
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# SWITCH OFF
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###################
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if [ "$1" = "0" ] || [ "$1" = "off" ]; then
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echo "TODO -> Turn off"
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sudo btrfs filesystem show /mnt/data
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sudo btrfs filesystem df /mnt/data
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sudo umount /mnt/data
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exit 0
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fi
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