Added swappiness configuration

proxmox-zfs-postinstall.sh

@@ -95,6 +95,19 @@ if [[ "$(echo $RESULT | awk '{print tolower($0)}')" == "n" ]]; then
     fi
 fi
 
+#### SWAPPINESS ####
+
+echo -e "######## CONFIGURE SWAPPINESS ########\n"
+SWAPPINESS=$(cat /proc/sys/vm/swappiness)
+echo "The current swappiness is configured to '$SWAPPINESS %' of free memory until using swap."
+read -p "If you want to change the swappiness, please type in the percentage as number (0 = diasbled):" user_input
+if echo "$user_input" | grep -qE '^[0-9]+$'; then
+    echo "Changing swappiness from '$SWAPPINESS %' to '$user_input %'"
+    SWAPPINESS=$user_input
+else
+    echo "No input - swappiness unchanged at '$SWAPPINESS %'."
+fi
+
 #### ZFS AUTO SNAPSHOT CONFIGURATION ####
 
 # get information about zfs-auto-snapshot and ask for snapshot retention
@@ -158,6 +171,10 @@ for interval in "${!auto_snap_keep[@]}"; do
     fi
 done
 
+echo "Configuring swappiness"
+echo "vm.swappiness=$SWAPPINESS" > /etc/sysctl.d/swappiness.conf
+sysctl -w vm.swappiness=$SWAPPINESS
+
 echo "Configuring pve-conf-backup"
 # create backup jobs of /etc
 zfs list $PVE_CONF_BACKUP_TARGET > /dev/null 2>&1