[rootfs/hwstats] Use 66% RAM as /tmp tmpfs instead of 60G so we can detect and report when running out of memory

2 files changed, 14 insertions, 3 deletions

diff --git a/remote/modules/hardware-stats/data/opt/openslx/scripts/cron-system_usage_update b/remote/modules/hardware-stats/data/opt/openslx/scripts/cron-system_usage_update
index 74486508..ff5adc70 100755
--- a/remote/modules/hardware-stats/data/opt/openslx/scripts/cron-system_usage_update
+++ b/remote/modules/hardware-stats/data/opt/openslx/scripts/cron-system_usage_update
@@ -21,6 +21,13 @@ for SESSION in $(loginctl | awk '{print $1}'); do
 	fi
 done
 
+# Also report usage of /tmp and swap
+TMP=$(df -P /tmp | grep -m1 ^/tmp)
+TMP_SIZE=$(echo $TMP | awk '{print $2}')
+TMP_FREE=$(echo $TMP | awk '{print $4}')
+SWAP_FREE=$(grep -m1 ^SwapFree: /proc/meminfo | awk '{print $2}')
+
 curl -s --data-urlencode "type=~runstate" --data-urlencode "uuid=$UUID" --data-urlencode "used=$USED" \
-	--data-urlencode "user=$Name" "$SLX_REMOTE_LOG" > /dev/null 2>&1
+	--data-urlencode "user=$Name" --data-urlencode "tmpsize=$TMP_SIZE" --data-urlencode "tmpfree=$TMP_FREE" \
+	--data-urlencode "swapfree=$SWAP_FREE" "$SLX_REMOTE_LOG" > /dev/null 2>&1
 
diff --git a/remote/rootfs/rootfs-stage32/data/opt/openslx/scripts/systemd-setup_partitions b/remote/rootfs/rootfs-stage32/data/opt/openslx/scripts/systemd-setup_partitions
index 0c352241..c8e680f0 100755
--- a/remote/rootfs/rootfs-stage32/data/opt/openslx/scripts/systemd-setup_partitions
+++ b/remote/rootfs/rootfs-stage32/data/opt/openslx/scripts/systemd-setup_partitions
@@ -152,9 +152,13 @@ done
 
 mount -a
 
-# Make huge tmpfs if nothing could be mounted for /tmp
+# Make tmpfs if nothing could be mounted for /tmp
+# 2016-10-12: Use a sane size of 66% which should be generous enough and prevent the machine from
+# just crashing if RAM is too full. We previously hugely oversized since vmware wants at least as
+# much free space as the VMs RAM; however, this requirement can be disabled with a vmx setting,
+# which we're now doing.
 if [ "$HAVE_TEMP" = "no" ]; then
-	 mount_temp -t tmpfs -o size=60G none
+	 mount_temp -t tmpfs -o size=66% none
 	 slxlog "partition-temp" "Running /tmp on tmpfs only!" "/etc/disk.partition"
 fi
 if [ "$HAVE_SWAP" = "no" ]; then