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#!/bin/bash
# Format a USB external drive as a unique BTRFS partition
#
# Copyleft 2017 by Ignacio Nunez Hernanz <nacho _a_t_ ownyourbits _d_o_t_ com>
# GPL licensed (see end of file) * Use at your own risk!
#
# More at: https://ownyourbits.com
#
LABEL_=myCloudDrive
DESCRIPTION="Format an external USB drive as a BTRFS partition (dangerous)"
INFOTITLE="Instructions for USB drive formatting"
INFO="Make sure that ONLY the USB drive that you want to format is plugged in.
careful, this will destroy any data in the USB drive
** YOU WILL LOSE ALL YOUR USB DATA **"
configure()
{
# count all disk devices except mmcblk0
local NUM=$(( $( lsblk -l -n | awk '{ print $6 }' | grep disk | wc -l ) - 1 ))
# only one plugged in
[[ $NUM != 1 ]] && {
echo "ERROR: counted $NUM devices. Please, only plug in the USB drive you want to format";
return 1;
}
# disable nc-automount if enabled
killall -STOP udiskie 2>/dev/null
# umount if mounted
umount /media/USBdrive* &> /dev/null
# check still not mounted
for dir in $( ls -d /media/* 2>/dev/null ); do
mountpoint -q $dir && { echo "$dir is still mounted"; return 1; }
done
# do it
local NAME=( $( lsblk -l -n | grep -v mmcblk | grep disk | awk '{ print $1 }' ) )
[[ ${#NAME[@]} != 1 ]] && { echo "unexpected error"; return 1; }
wipefs -a -f /dev/"$NAME" || return 1
parted /dev/"$NAME" --script -- mklabel gpt || return 2
parted /dev/"$NAME" --script -- mkpart primary 0% 100% || return 3
sleep 0.5
mkfs.btrfs -q /dev/"${NAME}1" -f -L "$LABEL_"
local RET=$?
# enable nc-automount if enabled
killall -CONT udiskie 2>/dev/null
[ $RET -eq 0 ] && echo "Drive $NAME formatted successfuly and labeled $LABEL_"
return $RET
}
install() { :; }
# License
#
# This script is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This script is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this script; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
# Boston, MA 02111-1307 USA
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