Delete network on shutdown

Delete network on shutdown

agent/agent.sh

@@ -124,7 +124,7 @@ else
 
 fi
 
-delay=5000
+delay=500
 elapsed=$((($(date +%s%N) - ts)/1000000))
 
 if [[ delay -gt elapsed ]]; then
@@ -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
 

docker-compose.yml

@@ -10,6 +10,8 @@ services:
         devices:
             - /dev/kvm
             - /dev/vhost-net
+        device_cgroup_rules:
+            - 'c *:* rwm'
         cap_add:
             - NET_ADMIN        
         ports:

readme.md

@@ -60,6 +60,8 @@ docker run -it --rm -p 5000:5000 --device=/dev/kvm --cap-add NET_ADMIN --stop-ti
     environment:
         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?
 
@@ -152,10 +154,10 @@ docker run -it --rm -p 5000:5000 --device=/dev/kvm --cap-add NET_ADMIN --stop-ti
     devices:
         - /dev/vhost-net
     device_cgroup_rules:
-        - 'c 511:* rwm'
+        - 'c *:* rwm'
     ```
 
-    Please note that the exact `cgroup` rule number may vary depending on your system, but the log output will indicate the correct number in the event of an error.
+    Please note that even if you don't need DHCP, it's still recommended to enable this feature as it prevents NAT issues and increases performance by using a `macvtap` interface.
 
   * ### How do I install a specific version of vDSM?
 
@@ -163,7 +165,7 @@ docker run -it --rm -p 5000:5000 --device=/dev/kvm --cap-add NET_ADMIN --stop-ti
 
     ```yaml
     environment:
-        URL: "https://global.synologydownload.com/download/DSM/release/7.1.1/42962-1/DSM_VirtualDSM_42962.pat"
+        URL: "https://global.synologydownload.com/download/DSM/release/7.0.1/42218/DSM_VirtualDSM_42218.pat"
     ```
 
     With this method, you are able to switch between different versions while keeping your file data.

run/disk.sh

@@ -39,13 +39,15 @@ 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
 
       REQ=$((DATA_SIZE-OLD_SIZE))
 
-      # Check free diskspace    
+      # Check free diskspace
       SPACE=$(df --output=avail -B 1 "${STORAGE}" | tail -n 1)
 
       if (( REQ > SPACE )); then
@@ -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
-      rm -f "${DATA}"
+      if ! truncate -s "${DATA_SIZE}" "${DATA}"; then
-      error "Could not allocate a file for the virtual disk." && exit 87
+        rm -f "${DATA}"
+        error "Could not create a file for the virtual disk." && exit 87
+      fi
     fi
 
     if [[ "${ALLOCATE}" == [Zz]* ]]; then

run/install.sh

@@ -9,9 +9,11 @@ DL="https://global.synologydownload.com/download/DSM"
 
 if [ -z "$URL" ]; then
 
-  URL="$DL/release/7.2/64561/DSM_VirtualDSM_64561.pat"
+  if [ "$ARCH" == "amd64" ]; then
-  #URL="$DL/release/7.1.1/42962-1/DSM_VirtualDSM_42962.pat"
+    URL="$DL/release/7.2/64570-1/DSM_VirtualDSM_64570.pat"
-  #URL="$DL/release/7.0.1/42218/DSM_VirtualDSM_42218.pat"
+  else
+    URL="$DL/release/7.0.1/42218/DSM_VirtualDSM_42218.pat"
+  fi
 
 fi
 
@@ -98,10 +100,10 @@ if [ -f "${RDC}" ]; then
   mv /run/extract/scemd /run/extract/syno_extract_system_patch
   chmod +x /run/extract/syno_extract_system_patch
 
-  rm -rf "$TMP" && mkdir -p "$TMP"
-
 fi
 
+rm -rf "$TMP" && mkdir -p "$TMP"
+
 info "Install: Downloading $(basename "$URL")..."
 
 PAT="/$BASE.pat"
@@ -136,6 +138,7 @@ else
     apt-get -qq --no-install-recommends -y install qemu-user > /dev/null
 
     export DEBIAN_FRONTEND=""
+    export DEBCONF_NOWARNINGS=""
 
   fi
 
@@ -147,9 +150,10 @@ else
     { qemu-x86_64 /run/extract/syno_extract_system_patch "$PAT" "$TMP/."; rc=$?; } || :
   fi
 
-  (( rc != 0 )) && error "Failed to extract PAT file, reason $rc" && exit 63
   export LD_LIBRARY_PATH=""
 
+  (( rc != 0 )) && error "Failed to extract PAT file, reason $rc" && exit 63
+
 fi
 
 HDA="$TMP/hda1"
@@ -175,7 +179,9 @@ SPACE=$(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
-  rm -f "${SYSTEM}" && error "Could not allocate a file for the system disk." && exit 88
+  if ! truncate -s "${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

@@ -21,7 +21,9 @@ 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)
 
 [ ! -d "$STORAGE" ] && error "Storage folder (${STORAGE}) not found!" && exit 13
 
@@ -85,13 +87,13 @@ trap - ERR
 
 set -m
 (
-  [[ "${DEBUG}" == [Yy1]* ]] && set -x
+  [[ "${DEBUG}" == [Yy1]* ]] && info "$VERS" && set -x
   qemu-system-x86_64 ${ARGS:+ $ARGS} & echo $! > "${_QEMU_PID}"
   { set +x; } 2>/dev/null
 )
 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

@@ -4,10 +4,12 @@ set -Eeuo pipefail
 # Docker environment variables
 
 : ${HOST_CPU:=''}
+: ${HOST_MAC:=''}
 : ${HOST_BUILD:=''}
 : ${HOST_DEBUG:=''}
 : ${HOST_SERIAL:=''}
 : ${GUEST_SERIAL:=''}
+: ${HOST_MODEL:=''}
 : ${HOST_VERSION:=''}
 : ${HOST_TIMESTAMP:=''}
 
@@ -26,10 +28,12 @@ else
 fi
 
 HOST_ARGS=()
+HOST_ARGS+=("-cpu=${CPU_CORES}")
 HOST_ARGS+=("-cpu_arch=${HOST_CPU}")
 
-[ -n "$CPU_CORES" ] && HOST_ARGS+=("-cpu=${CPU_CORES}")
+[ -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}")
@@ -41,7 +45,7 @@ if [[ "${HOST_DEBUG}" == [Yy1]* ]]; then
   { set +x; } 2>/dev/null
   echo
 else
-  ./run/host.bin "${HOST_ARGS[@]}" > /dev/null 2>&1 &
+  ./run/host.bin "${HOST_ARGS[@]}" 2> /dev/null &
 fi
 
 # Configure serial ports