Default to --mount-containerd and show a message if the volume is big…

…ger than 10GB

run_demo.sh

@@ -42,24 +42,24 @@ function check_hostname(){
   fi
 }
 
-usage="${0##*/} [-h|--help] [--exit-when-done] [--offline] [--enable-coverage] [--mount-containerd] [--set-value key=value] [--] [source directories]"
+usage="${0##*/} [-h|--help] [--exit-when-done] [--offline] [--enable-coverage] [--no-mount-containerd] [--set-value key=value] [--] [source directories]"
 usage+="\n\n"
 usage+="  -h|--help: Print this help message and exit\n"
 usage+="  --exit-when-done: Exit after the demo has been started (it will be left running in the background)\n"
 usage+="  --enable-coverage: Enable coverage reporting\n"
 usage+="  --offline: Run in a mode which is suitable for fully offline use.\n"
 usage+="             WARNING: This may result in some weird behaviour, see the demo documentation for details.\n"
 usage+="             Implies: --mount-containerd\n"
-usage+="  --mount-containerd: Mount a directory on the host for the kind containerd storage.\n"
-usage+="                      This option avoids needing to pull container images every time the demo is started.\n"
-usage+="                      WARNING: There is no garbage collection so the directory will grow without bound.\n"
+usage+="  --no-mount-containerd: Mount a directory on the host for the kind containerd storage.\n"
+usage+="                         This option avoids needing to pull container images every time the demo is started.\n"
+usage+="                         WARNING: There is no garbage collection so the directory will grow without bound.\n"
 usage+="  --set-value: Set a value in the Helm values file. This can be used to override the default values.\n"
 usage+="               For example, to enable coverage reporting pass: --set-value developer.enableCoverage=true\n"
 usage+="  source directories: A list of directories containing Python packages to mount in the demo cluster.\n"
 
 # Parse command-line switches
 exit_when_done=0
-mount_containerd=0
+mount_containerd=1
 offline_mode=0
 declare -a helm_arguments=()
 enable_coverage=0
@@ -100,8 +100,8 @@ while [ -n "${1:-}" ]; do case $1 in
 		shift
 		continue ;;
 
-	--mount-containerd)
-    mount_containerd=1
+	--no-mount-containerd)
+    mount_containerd=0
 		shift
 		continue ;;
 
@@ -380,4 +380,12 @@ while true; do
     printf "%b No need to restart! %b\n" "${PARTY_EMOJI}" "${PARTY_EMOJI}"
     machine_hostname_has_changed=0
   fi
+  # Check the size of the containerd storage
+  if [ ${mount_containerd} -eq 1 ]; then
+    containerd_volume_size="$(docker exec diracx-demo-control-plane du -s -BG /var/lib/containerd | cut -d 'G' -f 1)"
+    if [[ "${containerd_volume_size}" -gt 10 ]]; then
+      printf "%b Volume for containerd is %s GB, if you want to save space " "${WARN_EMOJI}" "${containerd_volume_size}"
+      printf "shutdown the demo and run \"docker volume rm diracx-demo-containerd\"\n"
+    fi
+  fi
 done