Fix Docker Volume Issues on M2/M3 Macs by Enabling VZ Emulation and v…

…irtiofs (#90)

This PR addresses the Docker volume issues encountered by users on M2
and M3 Macs, as reported in this thread:
rancher-sandbox/rancher-desktop#1209

@cobbr2 just had a rough time with this one on his m2 mac. He was seeing
similar permission errors when trying to mount host volumes, preventing
services like PostgreSQL from starting correctly.

We were able to resolve the underlying issue by switching from the
default QEMU emulation to VZ (Virtualization.framework) and enabling
virtiofs for file sharing between the host and the guest VM.

The PR reintroduces the necessary configuration changes that were
previously removed, as these are still required for M2 and M3 Macs
running Rancher Desktop. This also adds the fix to prevent needing to
manually select virtiofs to get it working too.

VERSION

@@ -1 +1 @@
-0.1.50
+0.1.51

formula/ih-core.rb

@@ -1,5 +1,5 @@
 class IhCore < Formula
-  VERSION="0.1.50"
+  VERSION="0.1.51"
   desc "Brew formula for installing core tools used at Included Health engineering."
   homepage "https://github.com/ConsultingMD/homebrew-ih-public"
   license "CC BY-NC-ND 4.0"

lib/core/rancher/step.sh

@@ -49,6 +49,20 @@ function ih::setup::core.rancher::test() {
     return 1
   fi
 
+  # Use vz (requires macOS >=13.3) instead of qemu on M3 macs to resolve issues.
+  # More details: https://github.com/lima-vm/lima/issues/1996
+  local macos_version=$(ih::arch::get_macos_version)
+  if ih::arch::is_m2_or_m3_mac; then
+    if (( $(echo "$macos_version < 13.3" | bc -l) )); then
+      ih::log::error "macOS version 13.3 or higher is required for M3 Macs."
+      return 1
+    elif ! grep -q "<string>vz</string>" "$PLIST_DST"; then
+      ih::log::debug "The PLIST file needs to be updated to use 'vz' for M3 Macs."
+      return 1
+      # TODO: figure out how to check virtual-machine.mount.type (there's no rdctl get)
+    fi
+  fi
+
   return 0
 }
 
@@ -144,6 +158,19 @@ function ih::setup::core.rancher::install() {
       fi
     fi
 
+    # Use vz (requires macOS >=13.3) instead of qemu on M3 macs to resolve issues.
+    # More details: https://github.com/lima-vm/lima/issues/1996
+    if ih::arch::is_m2_or_m3_mac; then
+      if (( $(echo "$macos_version < 13.3" | bc -l) )); then
+        ih::log::error "macOS version 13.3 or higher is required for M3 Macs."
+        return 1 # Abort the installation for M3 Macs
+      elif ! grep -q "<string>vz</string>" "$PLIST_DST"; then
+        ih::log::debug "Updating PLIST to use 'vz' for Virtualization for M3 Macs."
+        sudo sed -i '' 's/<string>qemu<\/string>/<string>vz<\/string>/g' "$PLIST_DST"
+        rdctl set --experimental.virtual-machine.mount.type virtiofs
+      fi
+    fi
+
     echo "Rancher Desktop has been installed successfully"
   else
     ih::log::warn "Could not install Rancher Desktop"

lib/utils/arch.sh

@@ -25,3 +25,8 @@ ih::arch::mbrew() {
 ih::arch::get_macos_version() {
   sw_vers -productVersion | awk -F '.' '{ printf("%d.%d\n", $1, $2) }'
 }
+
+ih::arch::is_m2_or_m3_mac() {
+  local hw_model=$(sysctl -n machdep.cpu.brand_string)
+  [[ "$hw_model" == *"M2"* ]] || [[ "$hw_model" == *"M3"* ]]
+}