nextcloudmount.sh

#!/bin/bash
# Move Nextcloud data to another partition (for example an HDD) and mount it
# Author: Robin Labadie
# Website: https://www.lrob.fr

############
# Settings #
############
## Directories
# Where you want to move your Nextcloud Instances
clouddir="/srv/hdd-data/nextcloud_instances"
# Where your files are hosted (if not using Plesk, you might be able to adapt the script changing this)
hostdir="/var/www/vhosts"
# The location of the partent dir for the "data" dir of Nextcloud relative to the root directory for the domain
ncdir=".nextcloud"
# This one should probably suit any configuration for years
ncdatadir="${ncdir}/data"

#############
## Program ##
#############

## Misc Variables ##
selfname="$(basename "$(readlink -f "${BASH_SOURCE[0]}")")"

# Download bash API early (needed for fn_echo/fn_logecho)
if [ ! -f "ultimate-bash-api.sh" ]; then
	wget https://raw.githubusercontent.com/UltimateByte/ultimate-bash-api/master/ultimate-bash-api.sh
	chmod +x ultimate-bash-api.sh
fi
# shellcheck disable=SC1091
source ultimate-bash-api.sh

# Check that the script is launched with elevated privileges
if [ "$(id -u)" != "0" ]; then
	fn_echo "[ERROR] This script must be run with elevated privileges"
	exit 1
fi

# Check user input
# If nothing has been inputted
if [ -z "$1" ]; then
	# Info about script usage
	fn_echo "[ERROR] Please, specify FQN to migrate Nextcloud Data for."
	exit 1
# If there is too much args
elif [ -n "$2" ]; then
	fn_echo "[ERROR] Too many arguments!"
	exit 1
else
	# Defining domain name
	fqn="${1}"
	# Defining hosting path
	sitedir="${hostdir}/${fqn}"
	# Defining config file path (not used for now)
	configfile="${sitedir}/httpdocs/config/config.php"
	# Defining Nextcloud data path
	sitencdatadir="${sitedir}/${ncdatadir}"
	sitencdir="${sitedir}/${ncdir}"
	# Testing if everything is OK
	if [ ! -d "${sitedir}" ]; then
		fn_logecho "[ERROR] Path ${sitedir} not found. Did you misspell the domain name?"
		exit 1
	elif [ ! -d "${sitencdatadir}" ]; then
		fn_logecho "[ERROR] Path ${sitencdatadir} not found. Is this instance based on the usual architecture?"
		exit 1
	else
		fn_logecho "NC Data found at ${sitencdatadir}. Proceeding..."
		sleep 1
	fi
fi

# Check if already in fstab
if grep -q "${sitencdatadir}" /etc/fstab; then
	fn_logecho "[ERROR] Entry for ${sitencdatadir} already exists in /etc/fstab. Aborting."
	exit 1
fi

# Finding username
username=$(stat "${sitencdatadir}" -c "%U")
if [ -n "${username}" ]; then
	fn_logecho "Found username ${username}"
	sleep 1
else
	fn_logecho "[ERROR] Username could not be found, most likely bogus in this script."
	exit 1
fi

# Check that target base directory exists
if [ ! -d "${clouddir}" ]; then
	fn_logecho "[ERROR] Base directory ${clouddir} does not exist. Create it first."
	exit 1
fi

# Creating path
fn_logecho "Creating ${clouddir}/${username}"
if ! mkdir "${clouddir}/${username}"; then
	fn_logecho "[ERROR] Failed to create ${clouddir}/${username}"
	exit 1
fi

fn_logecho "Creating ${clouddir}/${username}/data"
if ! mkdir "${clouddir}/${username}/data"; then
	fn_logecho "[ERROR] Failed to create ${clouddir}/${username}/data"
	exit 1
fi
sleep 1

fn_logecho "Setting permissions: chown ${username}:psaserv ${clouddir}/${username}"
chown "${username}:psaserv" "${clouddir}/${username}"
chown "${username}:psaserv" "${clouddir}/${username}/data"
sleep 1

# Moving files (dotglob includes hidden files)
shopt -s dotglob
fn_logecho "Moving ${sitencdatadir}/* to ${clouddir}/${username}/data/"
if ! mv "${sitencdatadir}"/* "${clouddir}/${username}/data/"; then
	fn_logecho "[ERROR] Failed to move data. Check permissions and disk space."
	exit 1
fi
sleep 1

# Ensure mount point has correct ownership
chown "${username}:psaserv" "${sitencdatadir}"

# Add fstab entry and mount
fn_logecho "Adding to /etc/fstab: ${clouddir}/${username}/data	${sitencdatadir}	none	defaults,bind	0	0"
sleep 1
echo "${clouddir}/${username}/data	${sitencdatadir}	none	defaults,bind	0	0" >> /etc/fstab

fn_logecho "Reloading systemd and mounting"
systemctl daemon-reload
if ! mount -a; then
	fn_logecho "[ERROR] mount -a failed. Check /etc/fstab for errors."
	exit 1
fi
sleep 1

fn_logecho "Job done, I don't know who made that script but it's very handy for this very specific situation!"
exit 0