disable ramfs for meteor passes on <2Gi ram systems

(cherry picked from commit 72f43265b5)
Signed-off-by: Nico Rey <rey.nico@gmail.com>

install.sh

@@ -182,6 +182,10 @@ fi
 log_done "Nginx configured"
 
 ### Setup ramFS
+SYSTEM_MEMORY=$(free -m | awk '/^Mem:/{print $2}')
+if [ "$SYSTEM_MEMORY" -lt 2000 ]; then
+	sed -i -e "s/1000M/200M/g" templates/fstab
+fi
 set +e
 cat /etc/fstab | grep -q "ramfs"
 if [ $? -eq 0 ]; then

receive_meteor.sh

@@ -5,6 +5,13 @@
 . "$HOME/.tweepy.conf"
 . "$NOAA_HOME/common.sh"
 
+
+SYSTEM_MEMORY=$(free -m | awk '/^Mem:/{print $2}')
+if [ "$SYSTEM_MEMORY" -lt 2000 ]; then
+    log "The system doesn't have enough space to store a Meteor pass on RAM" "INFO"
+	RAMFS_AUDIO="${METEOR_OUTPUT}"
+fi
+
 ## pass start timestamp and sun elevation
 PASS_START=$(expr "$5" + 90)
 SUN_ELEV=$(python3 "$NOAA_HOME"/sun.py "$PASS_START")

templates/fstab

@@ -1 +1 @@
-tmpfs                   /var/ramfs      tmpfs nodev,nosuid,size=400M 0 0
+tmpfs                   /var/ramfs      tmpfs nodev,nosuid,size=1000M 0 0