Added more helpful information on usage of the zfs-media-drive script

zfs/zfs-media-drive.help

@@ -1,5 +1,8 @@
 This script allows the creation of ZFS pool specifically for the purpose of media. 
 This pool is divided into datasets that allow useful storage management of that media. 
+Subcommands for this script are: init, enc, and link. The first creates the filesystem 
+structure for the ZFS-formatted drive. The second allows specifying encrypted datasets. 
+The last creates cross-dataset symbolic links at their corresponding paths.
 
 -k  Option to provide a custom path to the key for the encrypted filesystem. Equivalent to 'keylocation' option in ZFS pool creation.
 -f  Opton to provide a custom format for the aforementioned key. Equivalnt to 'keyformat' option in ZFS pool creation.

zfs/zfs-media-drive.sh

@@ -3,7 +3,7 @@ set -euo pipefail
 
 SCRIPT_ROOT=$(dirname "$0")
 # @TODO: Implement more soft-coding and interactivity to this script
-ZFS_POOL_NAME="media"
+ZFS_POOL_NAME="medialib"
 ZFS_COMPAT="openzfs-2.1-linux"
 ZFS_KEY_LOC="file:///etc/zfs/keys/zroot.key"
 ZFS_KEY_FORMAT="passphrase"
@@ -31,10 +31,13 @@ create_zpool () {
 
 mkdataset () {
 	mkdir -p "$1"
-	sudo zfs create -o mountpoint="$1" "$2"
+	sudo zfs create -v -o mountpoint="$1" "$2"
 }
 
 create_datasets () {
+	read -r -p "Provide custom datasets? (y/n): " CUSTOMIZE_DATASETS
+	
+	if [[ "$CUSTOMIZE_DATASETS" =~ [Nn]* ]]; then
 		DATASET=("${HOME}/Documents/.calibre" "${1}/LITERATURE")
 		mkdataset "${DATASET[0]}" "${DATASET[1]}"
 
@@ -58,13 +61,42 @@ create_datasets () {
 		DATASET=("${HOME}/.XXX" "${1}/XXX")
 		mkdir -p "${DATASET[0]}"
 		sudo zfs create -o keylocation=prompt -o keyformat=passphrase -o mountpoint="${DATASET[0]}" "${DATASET[1]}"
+	elif [[ "$CUSTOMIZE_DATASETS" =~ [Yy]* ]]; then
+		while true; do
+			read -r -a DATASET -p "Define a mount path and its corresponding dataset name or route, in that order: "
+
+			if [ ${#DATASET[@]} -eq 2 ]; then
+				mkdataset "${DATASET[0]}" "${1}"/"${DATASET[1]}"
+				
+				read -r -p "Create another ZFS dataset? (y/n): " ANOTHER_DATASET
+
+				if [[ "$ANOTHER_DATASET" =~ [Yy]* ]]; then
+					continue
+				elif [[ "$ANOTHER_DATASET" =~ [Nn]* ]]; then
+					break
+				fi
+			else
+				printf "Error: must provide 2 arguments (i.e., mount path and dataset name or route)."
+				read -r -p "Try again? (y/n): " RETRY_PROMPT
+
+				if [[ "$RETRY_PROMPT" =~ [Yy]* ]]; then
+					continue
+				elif [[ "$RETRY_PROMPT" =~ [Nn]* ]]; then
+					break
+				fi
+			fi
+		done
+	else
+		exit 1
+	fi
 }
 
 print_menu () {
-	echo "$(<"${SCRIPT_ROOT}"/zfs-media-drive.help)"
+	printf "%s" "$(<"${SCRIPT_ROOT}"/zfs-media-drive.help)"
 }
 
 if [ -z "$1" ]; then
+	printf "Subcommand must be provided"
 	exit 1
 fi
 
@@ -84,12 +116,71 @@ if [ -n "$1" ] && [ "$1" == "init" ]; then
 	done
 
 	if [ -z "$ZFS_TARGET_DRIVE" ]; then
-		echo "Error: It is necessary to argue a -d option."
+		printf "Error: It is necessary to argue a -d option."
 		exit 1
 	fi
 
+	export ZFS_POOL_NAME
 	create_zpool "$ZFS_TARGET_DRIVE" "$ZFS_POOL_NAME" "$ZFS_COMPAT" "$ZFS_KEY_LOC" "$ZFS_KEY_FORMAT" "$ZFS_COMPRESSION"
+	printf "Following pool has been created: \n"
+	zpool list -v | grep "$ZFS_POOL_NAME"
 	create_datasets "$ZFS_POOL_NAME"
+	printf "Following datasets have been created: \n"
+	zfs list | grep "$ZFS_POOL_NAME"
+elif [ -n "$1" ] && [ "$1" == "enc" ]; then
+	while true; do
+		read -r -a DATASET -p "Define a mount path and its corresponding dataset name or route, in that order: "
+
+		if [ ${#DATASET[@]} -eq 2 ]; then
+			mkdir -p "${DATASET[0]}"
+			sudo zfs create -v -o keylocation=prompt -o keyformat=passphrase -o mountpoint="${DATASET[0]}" "${ZFS_POOL_NAME}"/"${DATASET[1]}"
+				
+			read -r -p "Create another ZFS dataset? (y/n): " ANOTHER_DATASET
+
+			if [[ "$ANOTHER_DATASET" =~ [Yy]* ]]; then
+				continue
+			elif [[ "$ANOTHER_DATASET" =~ [Nn]* ]]; then
+				break
+			fi
+		else
+			printf "Error: must provide 2 arguments (i.e., mount path and dataset name or route)."
+			read -r -p "Try again? (y/n): " RETRY_PROMPT
+
+			if [[ "$RETRY_PROMPT" =~ [Yy]* ]]; then
+				continue
+			elif [[ "$RETRY_PROMPT" =~ [Nn]* ]]; then
+				break
+			fi
+		fi
+	done
+elif [ -n "$1" ] && [ "$1" == "link" ]; then
+	while true; do
+		read -r -a LINKAGE -p "Define a symbolic link source path and destination dataset: "
+
+		if [ ${#LINKAGE[@]} -eq 2 ]; then
+			if ! [ -d "${LINKAGE[0]}" ]; then
+				mkdir -p "${LINKAGE[0]}"
+			fi
+			ln -s "${LINKAGE[0]}" "${ZFS_POOL_NAME}"/"${LINKAGE[1]}"
+
+			read -r -p "Create another symbolic link? (y/n): " ANOTHER_LINKAGE
+
+			if [[ "$ANOTHER_LINKAGE" =~ [Yy]* ]]; then
+				continue
+			elif [[ "$ANOTHER_LINKAGE" =~ [Nn]* ]]; then
+				break
+			fi
+		else
+			printf "Error: must provide 2 arguments (i.e., source path and destination path)."
+			read -r -p "Try again? (y/n): " RETRY_PROMPT
+
+			if [[ "$RETRY_PROMPT" =~ [Yy]* ]]; then
+				continue
+			elif [[ "$RETRY_PROMPT" =~ [Nn]* ]]; then
+				break
+			fi
+		fi
+	done
 else
 	while getopts "h" flag; do
 		case "$flag" in