From 6c0cb54f3228316c052a458167cecc7a35e7fffd Mon Sep 17 00:00:00 2001
From: Alexandre <44178713+alexbelgium@users.noreply.github.com>
Date: Sun, 19 Jan 2025 14:12:03 +0100
Subject: [PATCH 01/11] Align disk cleaning with disk_species_clean.sh

---
 scripts/disk_check.sh | 39 ++++++++-------------------------------
 1 file changed, 8 insertions(+), 31 deletions(-)

diff --git a/scripts/disk_check.sh b/scripts/disk_check.sh
index c6c98d8fe..f8aa50184 100755
--- a/scripts/disk_check.sh
+++ b/scripts/disk_check.sh
@@ -7,37 +7,14 @@ used="$(df -h ${EXTRACTED} | tail -n1 | awk '{print $5}')"
 if [ "${used//%}" -ge 95 ]; then
 
   case $FULL_DISK in
-    purge) echo "Removing oldest data"
-        cd ${EXTRACTED}/By_Date/
-        curl localhost/views.php?view=Species%20Stats &>/dev/null
-        if ! grep -qxFe \#\#start $HOME/BirdNET-Pi/scripts/disk_check_exclude.txt; then
-            exit
-        fi
-        filestodelete=$(($(find ${EXTRACTED}/By_Date/* -type f | wc -l) / $(find ${EXTRACTED}/By_Date/* -maxdepth 0 -type d | wc -l)))
-        iter=0
-        for i in */*/*; do
-            if [ $iter -ge $filestodelete ]; then
-                break
-            fi
-            if ! grep -qxFe "$i" $HOME/BirdNET-Pi/scripts/disk_check_exclude.txt; then
-                rm "$i"
-            fi
-            ((iter++))
-        done
-        find ~/BirdSongs/ -type d -empty -mtime +90 -delete
-        find ${EXTRACTED}/By_Date/ -empty -type d -delete;;
-
-       #rm -drfv "$(find ${EXTRACTED}/By_Date/* -maxdepth 1 -type d -prune \
-        # | sort -r | tail -n1)";;
-    keep) echo "Stopping Core Services"
-       /usr/local/bin/stop_core_services.sh;;
-  esac
-fi
-sleep 1
-if [ "${used//%}" -ge 95 ]; then
-  case $FULL_DISK in
-    purge) echo "Removing more data"
-       rm -rfv ${PROCESSED}/*;;
+    purge) echo "Removing data to stay below threshold"
+        max_files_species="1000"
+        safe_purge_threshold="$((95 * 9 / 10))"
+        while [ "$(df -h "${EXTRACTED}" | tail -n1 | awk '{print $5}' | tr -d '%')" -ge "$safe_purge_threshold" ]; do
+            ./disk_species_clean.sh "$max_files_species"
+            max_files_species=$((max_files_species * 9 / 10))
+        done;;
+      
     keep) echo "Stopping Core Services"
        /usr/local/bin/stop_core_services.sh;;
   esac

From 86debe7ccf854a49cc9ce2b3ac8993886390bcd7 Mon Sep 17 00:00:00 2001
From: Alexandre <44178713+alexbelgium@users.noreply.github.com>
Date: Sun, 19 Jan 2025 14:14:44 +0100
Subject: [PATCH 02/11] Accept argument

---
 scripts/disk_species_clean.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/scripts/disk_species_clean.sh b/scripts/disk_species_clean.sh
index 2526ea1f8..70b5f51ef 100755
--- a/scripts/disk_species_clean.sh
+++ b/scripts/disk_species_clean.sh
@@ -7,6 +7,11 @@ base_dir="$HOME/BirdSongs/Extracted/By_Date"
 max_files_species="${MAX_FILES_SPECIES:-1000}"
 cd "$base_dir" || true
 
+# Check if the first argument is a valid integer
+if [[ "$1" =~ ^[0-9]+$ ]]; then
+  max_files_species="$1"
+fi
+
 # If max_files_species is not higher than 1, exit
 if [[ "$max_files_species" -lt 1 ]]; then
     exit 0

From 1dcb00ff23ab7304c3a4fb3778d9a708d657727d Mon Sep 17 00:00:00 2001
From: Alexandre <44178713+alexbelgium@users.noreply.github.com>
Date: Sat, 25 Jan 2025 20:49:42 +0100
Subject: [PATCH 03/11] Readd logic

---
 scripts/disk_check.sh | 40 +++++++++++++---------------------------
 1 file changed, 13 insertions(+), 27 deletions(-)

diff --git a/scripts/disk_check.sh b/scripts/disk_check.sh
index 9a1c78f35..37057d4df 100644
--- a/scripts/disk_check.sh
+++ b/scripts/disk_check.sh
@@ -8,36 +8,22 @@ purge_threshold="${PURGE_THRESHOLD:-95}"
 if [ "${used//%}" -ge "$purge_threshold" ]; then
 
   case $FULL_DISK in
-    purge) echo "Removing oldest data"
-        cd ${EXTRACTED}/By_Date/
-        curl localhost/views.php?view=Species%20Stats &>/dev/null
-        if ! grep -qxFe \#\#start $HOME/BirdNET-Pi/scripts/disk_check_exclude.txt; then
-            exit
-        fi
-        filestodelete=$(($(find ${EXTRACTED}/By_Date/* -type f | wc -l) / $(find ${EXTRACTED}/By_Date/* -maxdepth 0 -type d | wc -l)))
-        iter=0
-        for i in */*/*; do
-            if [ $iter -ge $filestodelete ]; then
-                break
+    purge) echo "Removing data to stay below threshold"
+        max_files_species="1000"
+        safe_files_species="50"
+        safe_purge_threshold="$((95 * 9 / 10))"
+        while [ "$(df -h "${EXTRACTED}" | tail -n1 | awk '{print $5}' | tr -d '%')" -ge "$safe_purge_threshold" ]; do
+            ./disk_species_clean.sh "$max_files_species"
+            max_files_species=$((max_files_species * 9 / 10))
+            if [ "$max_files_species" -lt "$safe_files_species" ]; then
+              echo "ERROR : safeguard initiated at $safe_file_species files remaining to make sure that we do not delete too many files. Is there an issue with the path of $EXTRACTED? Stopping core services."
+              /usr/local/bin/stop_core_services.sh
+              break
             fi
-            if ! grep -qxFe "$i" $HOME/BirdNET-Pi/scripts/disk_check_exclude.txt; then
-                rm "$i"
-            fi
-            ((iter++))
-        done
-        find ~/BirdSongs/ -type d -empty -mtime +90 -delete
-        find ${EXTRACTED}/By_Date/ -empty -type d -delete;;
+            sleep 5
+        done;;
 
     keep) echo "Stopping Core Services"
        /usr/local/bin/stop_core_services.sh;;
   esac
 fi
-sleep 1
-if [ "${used//%}" -ge "$purge_threshold" ]; then
-  case $FULL_DISK in
-    purge) echo "Removing more data"
-       rm -rfv ${PROCESSED}/*;;
-    keep) echo "Stopping Core Services"
-       /usr/local/bin/stop_core_services.sh;;
-  esac
-fi

From 897a787f76739e8c5f3ece2805ec2498bf123db6 Mon Sep 17 00:00:00 2001
From: alexbelgium <alexandre.pary@gmail.com>
Date: Sun, 18 May 2025 10:23:49 +0200
Subject: [PATCH 04/11] exec

---
 scripts/disk_check.sh | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
 mode change 100644 => 100755 scripts/disk_check.sh

diff --git a/scripts/disk_check.sh b/scripts/disk_check.sh
old mode 100644
new mode 100755

From 3f04d9ad09941bc9fa06c2128ae6255f6651ce70 Mon Sep 17 00:00:00 2001
From: Alexandre <44178713+alexbelgium@users.noreply.github.com>
Date: Mon, 8 Sep 2025 11:54:28 +0200
Subject: [PATCH 05/11] Keep at least 30 files per species

---
 scripts/disk_check.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/disk_check.sh b/scripts/disk_check.sh
index 37057d4df..419bc3651 100755
--- a/scripts/disk_check.sh
+++ b/scripts/disk_check.sh
@@ -10,7 +10,7 @@ if [ "${used//%}" -ge "$purge_threshold" ]; then
   case $FULL_DISK in
     purge) echo "Removing data to stay below threshold"
         max_files_species="1000"
-        safe_files_species="50"
+        safe_files_species="30"
         safe_purge_threshold="$((95 * 9 / 10))"
         while [ "$(df -h "${EXTRACTED}" | tail -n1 | awk '{print $5}' | tr -d '%')" -ge "$safe_purge_threshold" ]; do
             ./disk_species_clean.sh "$max_files_species"

From 808e9b75044461508450b296229b279e985eb97a Mon Sep 17 00:00:00 2001
From: Alexandre <44178713+alexbelgium@users.noreply.github.com>
Date: Mon, 8 Sep 2025 11:56:42 +0200
Subject: [PATCH 06/11] Fix typo in error message for safeguard initiation

---
 scripts/disk_check.sh | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/scripts/disk_check.sh b/scripts/disk_check.sh
index 419bc3651..1e3de6982 100755
--- a/scripts/disk_check.sh
+++ b/scripts/disk_check.sh
@@ -16,7 +16,7 @@ if [ "${used//%}" -ge "$purge_threshold" ]; then
             ./disk_species_clean.sh "$max_files_species"
             max_files_species=$((max_files_species * 9 / 10))
             if [ "$max_files_species" -lt "$safe_files_species" ]; then
-              echo "ERROR : safeguard initiated at $safe_file_species files remaining to make sure that we do not delete too many files. Is there an issue with the path of $EXTRACTED? Stopping core services."
+              echo "ERROR : safeguard initiated at $safe_files_species files remaining to make sure that we do not delete too many files. Is there an issue with the path of $EXTRACTED? Stopping core services."
               /usr/local/bin/stop_core_services.sh
               break
             fi
@@ -24,6 +24,9 @@ if [ "${used//%}" -ge "$purge_threshold" ]; then
         done;;
 
     keep) echo "Stopping Core Services"
-       /usr/local/bin/stop_core_services.sh;;
+        /usr/local/bin/stop_core_services.sh;;
+
+    *) echo "Unknown FULL_DISK value: $FULL_DISK"
+        exit 1;;
   esac
 fi

From 49569d29313773d0dab289605858412fe896533b Mon Sep 17 00:00:00 2001
From: Alexandre <44178713+alexbelgium@users.noreply.github.com>
Date: Mon, 8 Sep 2025 11:57:45 +0200
Subject: [PATCH 07/11] First check if above safe_files_species before removing

---
 scripts/disk_check.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/disk_check.sh b/scripts/disk_check.sh
index 1e3de6982..50549dd24 100755
--- a/scripts/disk_check.sh
+++ b/scripts/disk_check.sh
@@ -13,13 +13,13 @@ if [ "${used//%}" -ge "$purge_threshold" ]; then
         safe_files_species="30"
         safe_purge_threshold="$((95 * 9 / 10))"
         while [ "$(df -h "${EXTRACTED}" | tail -n1 | awk '{print $5}' | tr -d '%')" -ge "$safe_purge_threshold" ]; do
-            ./disk_species_clean.sh "$max_files_species"
             max_files_species=$((max_files_species * 9 / 10))
             if [ "$max_files_species" -lt "$safe_files_species" ]; then
               echo "ERROR : safeguard initiated at $safe_files_species files remaining to make sure that we do not delete too many files. Is there an issue with the path of $EXTRACTED? Stopping core services."
               /usr/local/bin/stop_core_services.sh
               break
             fi
+            ./disk_species_clean.sh "$max_files_species"
             sleep 5
         done;;
 

From 48ce96e05db45e6bd958c76406bd079d0f6bc387 Mon Sep 17 00:00:00 2001
From: Alexandre <44178713+alexbelgium@users.noreply.github.com>
Date: Mon, 15 Sep 2025 08:09:39 +0200
Subject: [PATCH 08/11] Resolve symlinks if needed

---
 scripts/disk_species_clean.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/disk_species_clean.sh b/scripts/disk_species_clean.sh
index 70b5f51ef..04d503b74 100755
--- a/scripts/disk_species_clean.sh
+++ b/scripts/disk_species_clean.sh
@@ -4,6 +4,7 @@
 
 source /etc/birdnet/birdnet.conf
 base_dir="$HOME/BirdSongs/Extracted/By_Date"
+base_dir="$(realpath -e "$base_dir")"
 max_files_species="${MAX_FILES_SPECIES:-1000}"
 cd "$base_dir" || true
 

From a6dfe388ddd33f303fcef04c0787d79db818a39c Mon Sep 17 00:00:00 2001
From: Alexandre <44178713+alexbelgium@users.noreply.github.com>
Date: Mon, 15 Sep 2025 08:14:05 +0200
Subject: [PATCH 09/11] Fix base_dir assignment to use realpath correctly

---
 scripts/disk_species_clean.sh | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/scripts/disk_species_clean.sh b/scripts/disk_species_clean.sh
index 04d503b74..1805e4c87 100755
--- a/scripts/disk_species_clean.sh
+++ b/scripts/disk_species_clean.sh
@@ -3,8 +3,7 @@
 # KEEP ONLY THE NUMBER OF FILES PER SPECIES DEFINED IN THE OPTIONS
 
 source /etc/birdnet/birdnet.conf
-base_dir="$HOME/BirdSongs/Extracted/By_Date"
-base_dir="$(realpath -e "$base_dir")"
+base_dir="$(realpath -e "$HOME/BirdSongs/Extracted/By_Date")"
 max_files_species="${MAX_FILES_SPECIES:-1000}"
 cd "$base_dir" || true
 

From 30fe7920168eddb62d2989a21c7102a4c9ff598a Mon Sep 17 00:00:00 2001
From: Alexandre <44178713+alexbelgium@users.noreply.github.com>
Date: Mon, 15 Sep 2025 08:49:29 +0200
Subject: [PATCH 10/11] Clean code, add comments, robust failure modes

---
 scripts/disk_check.sh | 66 ++++++++++++++++++++++++++++++++++---------
 1 file changed, 52 insertions(+), 14 deletions(-)

diff --git a/scripts/disk_check.sh b/scripts/disk_check.sh
index 50549dd24..d61405bd3 100755
--- a/scripts/disk_check.sh
+++ b/scripts/disk_check.sh
@@ -1,29 +1,67 @@
 #!/usr/bin/env bash
 set -x
 
+# =============================================================================
+# BirdNET-Pi Disk Space Management Script
+#
+# PURPOSE:
+#   This script monitors the disk space used by BirdNET-Pi recordings and
+#   automatically purges old files if the used space exceeds a configurable
+#   threshold. It is designed to prevent disk full errors and ensure smooth
+#   operation of BirdNET-Pi services.
+#
+# USAGE:
+#   - The script is intended to be run automatically (e.g., via cron).
+#   - It sources configuration from `/etc/birdnet/birdnet.conf`.
+#   - It respects the `FULL_DISK` environment variable to determine whether to
+#     purge files or stop services when the disk is full.
+#   - Always leaves at least 30 recordings per species.
+#   - Deletes files in steps of 5% of MAX_FILES_SPECIES (minimum 5 files per step).
+#   - Stops core services if disk remains full after purging.
+#
+# =============================================================================
+
 source /etc/birdnet/birdnet.conf
-used="$(df -h ${EXTRACTED} | tail -n1 | awk '{print $5}')"
-purge_threshold="${PURGE_THRESHOLD:-95}"
 
-if [ "${used//%}" -ge "$purge_threshold" ]; then
+# Get the variables
+max_files_species="${MAX_FILES_SPECIES:-1000}"
+purge_threshold="${PURGE_THRESHOLD:-95}"
+# Remove 10% below the threshold to avoid running the script too often, ensure integer
+purge_threshold_target=$(($purge_threshold * 9 / 10))
+# Deletion step corresponding to 5% of max_files_species, with at least 5 files, ensure integer
+safe_purge_step=$(($max_files_species * 5 / 100))
+(( safe_purge_step >= 5 )) || safe_purge_step=5
+# Always leave at least 30 recordings
+safe_files_species="30"
+# Ensure integers
+purge_threshold="${purge_threshold%%[.,]*}"
+purge_threshold_target="${purge_threshold_target%%[.,]*}"
+safe_purge_step="${safe_purge_step%%[.,]*}"
+# Get the disk space in %
+base_dir="$(realpath -e "$HOME/BirdSongs/Extracted/By_Date")"
+used_disk() {
+  df -P "$base_dir" | awk 'END { gsub(/%/,"",$5); print $5 }'
+}
 
+# If the used space is above the threshold
+if [ "$(used_disk)" -ge "$purge_threshold" ]; then
   case $FULL_DISK in
-    purge) echo "Removing data to stay below threshold"
-        max_files_species="1000"
-        safe_files_species="30"
-        safe_purge_threshold="$((95 * 9 / 10))"
-        while [ "$(df -h "${EXTRACTED}" | tail -n1 | awk '{print $5}' | tr -d '%')" -ge "$safe_purge_threshold" ]; do
-            max_files_species=$((max_files_species * 9 / 10))
-            if [ "$max_files_species" -lt "$safe_files_species" ]; then
-              echo "ERROR : safeguard initiated at $safe_files_species files remaining to make sure that we do not delete too many files. Is there an issue with the path of $EXTRACTED? Stopping core services."
+    purge) echo "Removing data to stay below threshold of $purge_threshold"
+        # Loop until the value is below 10% of the threshold, to avoid running the script too often
+        max_files_species_loop="$max_files_species"
+        while [ "$(used_disk)" -ge "$purge_threshold_target" ]; do
+            max_files_species_loop=$(( max_files_species_loop - safe_purge_step ))
+            if [ "$max_files_species_loop" -gt "$safe_files_species" ]; then
+              bash "$HOME/BirdNET-Pi/scripts/disk_species_clean.sh" "$max_files_species_loop"
+              sleep 5
+            else
+              echo "ERROR : safeguard initiated at $safe_files_species files remaining to make sure that we do not delete too many files. Is there an issue with the path of $base_dir? Stopping core services."
               /usr/local/bin/stop_core_services.sh
               break
             fi
-            ./disk_species_clean.sh "$max_files_species"
-            sleep 5
         done;;
 
-    keep) echo "Stopping Core Services"
+    keep) echo "FULL_DISK=keep → Stopping Core Services."
         /usr/local/bin/stop_core_services.sh;;
 
     *) echo "Unknown FULL_DISK value: $FULL_DISK"

From 339fa39d7117264dc212f633606fac7b25561c61 Mon Sep 17 00:00:00 2001
From: Alexandre <44178713+alexbelgium@users.noreply.github.com>
Date: Tue, 16 Dec 2025 14:55:02 +0100
Subject: [PATCH 11/11] Enhance disk_check.sh with better error handling

Refactor disk space management script for improved error handling and integer sanitization.
---
 scripts/disk_check.sh | 93 ++++++++++++++++++++++++++++---------------
 1 file changed, 62 insertions(+), 31 deletions(-)

diff --git a/scripts/disk_check.sh b/scripts/disk_check.sh
index d61405bd3..0ea36943a 100755
--- a/scripts/disk_check.sh
+++ b/scripts/disk_check.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -x
+set -Eeuo pipefail
 
 # =============================================================================
 # BirdNET-Pi Disk Space Management Script
@@ -23,48 +23,79 @@ set -x
 
 source /etc/birdnet/birdnet.conf
 
+# --- tiny helper: sanitize "95", "95.0", "95,0", " 95 " -> integer (or default) ---
+int() {
+  local v="${1:-}" d="${2:-0}"
+  v="${v//[[:space:]]/}"
+  v="${v%%[.,]*}"
+  [[ "$v" =~ ^[0-9]+$ ]] && printf '%s' "$v" || printf '%s' "$d"
+}
+
 # Get the variables
-max_files_species="${MAX_FILES_SPECIES:-1000}"
-purge_threshold="${PURGE_THRESHOLD:-95}"
+max_files_species="$(int "${MAX_FILES_SPECIES:-1000}" 1000)"
+purge_threshold="$(int "${PURGE_THRESHOLD:-95}" 95)"
+
 # Remove 10% below the threshold to avoid running the script too often, ensure integer
-purge_threshold_target=$(($purge_threshold * 9 / 10))
+purge_threshold_target=$(( purge_threshold * 9 / 10 ))
+
 # Deletion step corresponding to 5% of max_files_species, with at least 5 files, ensure integer
-safe_purge_step=$(($max_files_species * 5 / 100))
+safe_purge_step=$(( max_files_species * 5 / 100 ))
 (( safe_purge_step >= 5 )) || safe_purge_step=5
+
 # Always leave at least 30 recordings
 safe_files_species="30"
-# Ensure integers
-purge_threshold="${purge_threshold%%[.,]*}"
-purge_threshold_target="${purge_threshold_target%%[.,]*}"
-safe_purge_step="${safe_purge_step%%[.,]*}"
+
 # Get the disk space in %
-base_dir="$(realpath -e "$HOME/BirdSongs/Extracted/By_Date")"
+base_dir="$(realpath -e "${BIRDNET_BASE_DIR:-$HOME/BirdSongs/Extracted/By_Date}" 2>/dev/null || true)"
+if [[ -z "$base_dir" ]]; then
+  echo "ERROR: base_dir not found/resolvable: ${BIRDNET_BASE_DIR:-$HOME/BirdSongs/Extracted/By_Date}. Stopping core services."
+  /usr/local/bin/stop_core_services.sh || true
+  exit 1
+fi
+
 used_disk() {
-  df -P "$base_dir" | awk 'END { gsub(/%/,"",$5); print $5 }'
+  df -P "$base_dir" | awk 'NR==2 { gsub(/%/,"",$5); print $5 }'
 }
 
+# Prevent concurrent runs (cron overlap)
+lockfile="${LOCK_FILE:-/tmp/birdnet_disk_check.lock}"
+exec 9>"$lockfile"
+flock -n 9 || exit 0
+
 # If the used space is above the threshold
-if [ "$(used_disk)" -ge "$purge_threshold" ]; then
-  case $FULL_DISK in
-    purge) echo "Removing data to stay below threshold of $purge_threshold"
-        # Loop until the value is below 10% of the threshold, to avoid running the script too often
-        max_files_species_loop="$max_files_species"
-        while [ "$(used_disk)" -ge "$purge_threshold_target" ]; do
-            max_files_species_loop=$(( max_files_species_loop - safe_purge_step ))
-            if [ "$max_files_species_loop" -gt "$safe_files_species" ]; then
-              bash "$HOME/BirdNET-Pi/scripts/disk_species_clean.sh" "$max_files_species_loop"
-              sleep 5
-            else
-              echo "ERROR : safeguard initiated at $safe_files_species files remaining to make sure that we do not delete too many files. Is there an issue with the path of $base_dir? Stopping core services."
-              /usr/local/bin/stop_core_services.sh
-              break
-            fi
-        done;;
+if (( $(used_disk) >= purge_threshold )); then
+  case "${FULL_DISK:-purge}" in
+    purge)
+      echo "Removing data to stay below threshold of $purge_threshold"
+      # Loop until the value is below 10% of the threshold, to avoid running the script too often
+      max_files_species_loop="$max_files_species"
+      while (( $(used_disk) >= purge_threshold_target )); do
+        max_files_species_loop=$(( max_files_species_loop - safe_purge_step ))
+        if (( max_files_species_loop > safe_files_species )); then
+          bash "$HOME/BirdNET-Pi/scripts/disk_species_clean.sh" "$max_files_species_loop"
+          sleep 5
+        else
+          echo "ERROR : safeguard initiated at $safe_files_species files remaining to make sure that we do not delete too many files. Is there an issue with the path of $base_dir? Stopping core services."
+          /usr/local/bin/stop_core_services.sh || true
+          break
+        fi
+      done
+
+      # If still full after purge attempts, stop core services
+      if (( $(used_disk) >= purge_threshold )); then
+        echo "Disk remains >= threshold after purging. Stopping core services."
+        /usr/local/bin/stop_core_services.sh || true
+      fi
+      ;;
 
-    keep) echo "FULL_DISK=keep → Stopping Core Services."
-        /usr/local/bin/stop_core_services.sh;;
+    keep)
+      echo "FULL_DISK=keep → Stopping Core Services."
+      /usr/local/bin/stop_core_services.sh
+      ;;
 
-    *) echo "Unknown FULL_DISK value: $FULL_DISK"
-        exit 1;;
+    *)
+      echo "Unknown FULL_DISK value: ${FULL_DISK:-<unset>}"
+      exit 1
+      ;;
   esac
 fi