Delete network on shutdown

Delete network on shutdown

agent/agent.sh

@@ -143,9 +143,11 @@ else
   MSG="http://${IP}:5000"
 fi
 
+echo ""
 info "--------------------------------------------------------"
 info " You can now login to DSM at ${MSG}"
 info "--------------------------------------------------------"
+echo ""
 
 # Wait for NMI interrupt as a shutdown signal
 

readme.md

@@ -61,6 +61,8 @@ docker run -it --rm -p 5000:5000 --device=/dev/kvm --cap-add NET_ADMIN --stop-ti
         DISK_SIZE: "256G"
     ```
     
+    This can also be used to resize the existing disk to a larger capacity without data loss. 
+
   * ### How do I change the location of the virtual disk?
 
     To change the virtual disk's location from the default Docker volume, include the following bind mount in your compose file:

run/disk.sh

@@ -39,7 +39,9 @@ if [ -f "${DATA}" ]; then
     if [[ "${ALLOCATE}" == [Nn]* ]]; then
 
       # Resize file by changing its length
-      truncate -s "${DATA_SIZE}" "${DATA}"; 
+      if ! truncate -s "${DATA_SIZE}" "${DATA}"; then
+        error "Could not resize the file for the virtual disk." && exit 85
+      fi
 
     else
 
@@ -55,7 +57,9 @@ if [ -f "${DATA}" ]; then
 
       # Resize file by allocating more space
       if ! fallocate -l "${DATA_SIZE}" "${DATA}"; then
-        error "Could not allocate a file for the virtual disk." && exit 85
+        if ! truncate -s "${DATA_SIZE}" "${DATA}"; then
+          error "Could not resize the file for the virtual disk." && exit 85
+        fi
       fi
 
       if [[ "${ALLOCATE}" == [Zz]* ]]; then
@@ -84,7 +88,10 @@ if [ ! -f "${DATA}" ]; then
   if [[ "${ALLOCATE}" == [Nn]* ]]; then
 
     # Create an empty file
-    truncate -s "${DATA_SIZE}" "${DATA}"
+    if ! truncate -s "${DATA_SIZE}" "${DATA}"; then
+      rm -f "${DATA}"
+      error "Could not create a file for the virtual disk." && exit 87
+    fi
 
   else
 
@@ -98,8 +105,10 @@ if [ ! -f "${DATA}" ]; then
 
     # Create an empty file
     if ! fallocate -l "${DATA_SIZE}" "${DATA}"; then
+      if ! truncate -s "${DATA_SIZE}" "${DATA}"; then
         rm -f "${DATA}"
-      error "Could not allocate a file for the virtual disk." && exit 87
+        error "Could not create a file for the virtual disk." && exit 87
+      fi
     fi
 
     if [[ "${ALLOCATE}" == [Zz]* ]]; then

run/install.sh

@@ -10,7 +10,7 @@ DL="https://global.synologydownload.com/download/DSM"
 if [ -z "$URL" ]; then
 
   if [ "$ARCH" == "amd64" ]; then
-    URL="$DL/release/7.2/64561/DSM_VirtualDSM_64561.pat"
+    URL="$DL/release/7.2/64570-1/DSM_VirtualDSM_64570.pat"
   else
     URL="$DL/release/7.0.1/42218/DSM_VirtualDSM_42218.pat"
   fi
@@ -179,7 +179,9 @@ SPACE=$(df --output=avail -B 1 "$TMP" | tail -n 1)
 (( SYSTEM_SIZE > SPACE )) && error "Not enough free space to create a 4 GB system disk." && exit 87
 
 if ! fallocate -l "${SYSTEM_SIZE}" "${SYSTEM}"; then
+  if ! truncate -s "${SYSTEM_SIZE}" "${SYSTEM}"; then
     rm -f "${SYSTEM}" && error "Could not allocate a file for the system disk." && exit 88
+  fi
 fi
 
 if [[ "${ALLOCATE}" == [Zz]* ]]; then

run/network.sh

@@ -31,7 +31,10 @@ configureDHCP() {
     error "and that the NET_ADMIN capability has been added to the container config: --cap-add NET_ADMIN" && exit 16
   fi
 
-  ip link set "${VM_NET_TAP}" up
+  while ! ip link set "${VM_NET_TAP}" up; do
+    info "Waiting for address to become available..."
+    sleep 2
+  done
 
   TAP_NR=$(</sys/class/net/"${VM_NET_TAP}"/ifindex)
   TAP_PATH="/dev/tap${TAP_NR}"
@@ -127,11 +130,20 @@ configureNAT () {
   fi
 
   ip address add ${VM_NET_IP%.*}.1/24 broadcast ${VM_NET_IP%.*}.255 dev dockerbridge
-  ip link set dockerbridge up
+
+  while ! ip link set dockerbridge up; do
+    info "Waiting for address to become available..."
+    sleep 2
+  done
 
   # QEMU Works with taps, set tap to the bridge created
   ip tuntap add dev "${VM_NET_TAP}" mode tap
-  ip link set "${VM_NET_TAP}" up promisc on
+
+  while ! ip link set "${VM_NET_TAP}" up promisc on; do
+    info "Waiting for tap to become available..."
+    sleep 2
+  done
+
   ip link set dev "${VM_NET_TAP}" master dockerbridge
 
   # Add internet connection to the VM
@@ -165,6 +177,24 @@ configureNAT () {
   return 0
 }
 
+closeNetwork () {
+
+  if [[ "${DHCP}" == [Yy1]* ]]; then
+
+    ip link set "${VM_NET_TAP}" down || true
+    ip link delete "${VM_NET_TAP}" || true
+
+  else
+
+    ip link set "${VM_NET_TAP}" down promisc off || true
+    ip link delete "${VM_NET_TAP}" || true
+
+    ip link set dockerbridge down || true
+    ip link delete dockerbridge || true
+
+  fi
+}
+
 # ######################################
 #  Configure Network
 # ######################################

run/power.sh

@@ -81,6 +81,8 @@ _graceful_shutdown() {
   echo && echo "❯ Quitting..."
   echo 'quit' | nc -q 1 -w 1 localhost "${QEMU_MONPORT}" >/dev/null 2>&1 || true
 
+  closeNetwork
+
   return
 }
 

run/run.sh

@@ -21,6 +21,7 @@ trap 'error "Status $? while: ${BASH_COMMAND} (line $LINENO/$BASH_LINENO)"' ERR
 
 STORAGE="/storage"
 KERNEL=$(uname -r | cut -b 1)
+MINOR=$(uname -r | cut -d '.' -f2)
 ARCH=$(dpkg --print-architecture)
 VERS=$(qemu-system-x86_64 --version | head -n 1 | cut -d '(' -f 1)
 
@@ -92,7 +93,7 @@ set -m
 )
 set +m
 
-if (( KERNEL > 4 )); then
+if (( KERNEL > 5 )) || ( (( KERNEL == 5 )) && (( MINOR > 10 )) ); then
   pidwait -F "${_QEMU_PID}" & wait $!
 else
   tail --pid "$(cat "${_QEMU_PID}")" --follow /dev/null & wait $!

run/serial.sh

@@ -9,6 +9,7 @@ set -Eeuo pipefail
 : ${HOST_DEBUG:=''}
 : ${HOST_SERIAL:=''}
 : ${GUEST_SERIAL:=''}
+: ${HOST_MODEL:=''}
 : ${HOST_VERSION:=''}
 : ${HOST_TIMESTAMP:=''}
 
@@ -30,8 +31,9 @@ HOST_ARGS=()
 HOST_ARGS+=("-cpu=${CPU_CORES}")
 HOST_ARGS+=("-cpu_arch=${HOST_CPU}")
 
-[ -n "$HOST_MAC" ] && HOST_ARGS+=("-mac=${HOST_MAC//:/-}")
+[ -n "$HOST_MAC" ] && HOST_ARGS+=("-mac=${HOST_MAC}")
 [ -n "$HOST_BUILD" ] && HOST_ARGS+=("-build=${HOST_BUILD}")
+[ -n "$HOST_MODEL" ] && HOST_ARGS+=("-model=${HOST_MODEL}")
 [ -n "$HOST_SERIAL" ] && HOST_ARGS+=("-hostsn=${HOST_SERIAL}")
 [ -n "$GUEST_SERIAL" ] && HOST_ARGS+=("-guestsn=${GUEST_SERIAL}")
 [ -n "$HOST_VERSION" ] && HOST_ARGS+=("-version=${HOST_VERSION}")