Update syno_hdd_db.sh

v3.1.59

syno_hdd_db.sh

@@ -30,6 +30,7 @@
 
 # DONE
 # Added enabling E10M20-T1, M2D20 and M2D18 for DS1821+, DS1621+ and DS1520+.
+# Added enabling M2D18 for RS822RP+, RS822+, RS1221RP+ and RS1221+ with older DSM version.
 #
 # Fixed enabling E10M20-T1, M2D20 and M2D18 cards in models that don't officially support them.
 #
@@ -37,6 +38,8 @@
 #   - If last memory socket was empty an invalid unit of bytes could be used. Issue #106
 #   - When dmidecode returned MB for one ram module and GB for another ram module. Issue #107
 #
+# Fixed bug displaying the max memory setting if total installed memory was less than the max memory. Issue #107
+#
 #
 # Minor bug fix for checking amount of installed memory.
 #
@@ -971,14 +974,12 @@ backupdb(){
 for i in "${!db1list[@]}"; do
     backupdb "${db1list[i]}" ||{
         ding
-        echo -e "${Error}ERROR 5${Off} Failed to backup $(basename -- "${db1list[i]}")!"
         exit 5
         }
 done
 for i in "${!db2list[@]}"; do
     backupdb "${db2list[i]}" ||{
         ding
-        echo -e "${Error}ERROR 5${Off} Failed to backup $(basename -- "${db2list[i]}")!"
         exit 5  # maybe don't exit for .db.new file
         }
 done
@@ -1153,6 +1154,8 @@ done
 
 # DS1821+, DS1621+ and DS1520+ also need edited device tree blob file
 # /etc.defaults/model.dtb
+# RS822RP+, RS822+, RS1221RP+ and RS1221+ with DSM older than 7.2 need
+# device tree blob file from DSM 7.2 to support M2D18
 
 enable_card(){
     # $1 is the file
@@ -1170,7 +1173,7 @@ enable_card(){
             if set_section_key_value "$1" "$2" "$modelname" yes; then
                 echo -e "Enabled ${Yellow}$3${Off} for ${Cyan}$modelname${Off}" >&2
             else
-                echo -e "${Error}ERROR 5${Off} Failed to enable $3 for ${modelname}!" >&2
+                echo -e "${Error}ERROR 9${Off} Failed to enable $3 for ${modelname}!" >&2
             fi
         else
             echo -e "${Yellow}$3${Off} already enabled for ${Cyan}$modelname${Off}" >&2
@@ -1182,9 +1185,10 @@ check_modeldtb(){
     # $1 is E10M20-T1 or M2D20 or M2D18 or M2D17
     if [[ -f /etc.defaults/model.dtb ]]; then
         if ! grep --text "$1" /etc.defaults/model.dtb >/dev/null; then
-            if [[ $modelname == "DS1821+" ]] ||\
-                [[ $modelname == "DS1621+" ]] ||\
-                    [[ $modelname == "DS1520+" ]];
+            if [[ $modelname == "DS1821+" ]] || [[ $modelname == "DS1621+" ]] ||\
+                [[ $modelname == "DS1520+" ]] || [[ $modelname == "RS822RP+" ]] ||\
+                [[ $modelname == "RS822+" ]] || [[ $modelname == "RS1221RP+" ]] ||\
+                [[ $modelname == "RS1221+" ]];
             then
                 echo "" >&2
                 if [[ -f ./dtb/${modelname}_model.dtb ]]; then
@@ -1376,6 +1380,7 @@ if [[ $dsm -gt "6" ]]; then  # DSM 6 as has no /proc/meminfo
         fi
         # Set mem_max_mb to the amount of installed memory
         setting="$(get_key_value $synoinfo mem_max_mb)"
+        settingbak="$(get_key_value ${synoinfo}.bak mem_max_mb)"                      # GitHub issue #107
         if [[ $ramtotal =~ ^[0-9]+$ ]]; then   # Check $ramtotal is numeric
             if [[ $ramtotal -gt "$setting" ]]; then
                 synosetkeyvalue "$synoinfo" mem_max_mb "$ramtotal"
@@ -1388,6 +1393,21 @@ if [[ $dsm -gt "6" ]]; then  # DSM 6 as has no /proc/meminfo
                 else
                     echo -e "\n${Error}ERROR${Off} Failed to change max memory!"
                 fi
+
+            elif [[ $setting -gt "$ramtotal" ]] && [[ $setting -gt "$settingbak" ]];  # GitHub issue #107 
+            then
+                # Fix setting is greater than both ramtotal and default in syninfo.conf.bak
+                synosetkeyvalue "$synoinfo" mem_max_mb "$settingbak"
+                # Check we restored mem_max_mb
+                setting="$(get_key_value $synoinfo mem_max_mb)"
+                if [[ $settingbak == "$setting" ]]; then
+                    #echo -e "\nSet max memory to $ramtotal MB."
+                    ramgb=$((ramtotal / 1024))
+                    echo -e "\nRestored max memory to $ramtotal GB."
+                else
+                    echo -e "\n${Error}ERROR${Off} Failed to restore max memory!"
+                fi
+
             elif [[ $ramtotal == "$setting" ]]; then
                 #echo -e "\nMax memory already set to $ramtotal MB."
                 ramgb=$((ramtotal / 1024))