hack/test-upgrade.sh: deflake

Set `QEMU_SYSTEM_X86_64="qemu-system-x86_64 -cpu host,-pdpe1gb"` for old Lima.
See PR 1487

Signed-off-by: Akihiro Suda <[email protected]>

Author: AkihiroSuda

.github/workflows/test.yml

@@ -394,12 +394,6 @@ jobs:
         retry_on: error
         max_attempts: 3
         command: ./hack/test-upgrade.sh ${{ matrix.oldver }} ${{ github.sha }}
-    - name: "Debug: ha.stdout.log"
-      if: always()
-      run: cat ~/.lima/test-upgrade/ha.stdout.log || true
-    - name: "Debug: ha.stderr.log"
-      if: always()
-      run: cat ~/.lima/test-upgrade/ha.stderr.log || true
 
   vz:
     name: "vz"

hack/test-upgrade.sh

@@ -38,6 +38,10 @@ function uninstall_lima() {
 	fi
 }
 
+function show_lima_log() {
+	tail -n 100 ~/.lima/"${LIMA_INSTANCE}"/*.log || true
+}
+
 INFO "Uninstalling lima"
 uninstall_lima
 
@@ -47,8 +51,12 @@ install_lima "${OLDVER}"
 export LIMA_INSTANCE="test-upgrade"
 
 INFO "Creating an instance \"${LIMA_INSTANCE}\" with the old Lima"
-defer "limactl delete -f \"${LIMA_INSTANCE}\""
-limactl start --tty=false "${LIMA_INSTANCE}"
+defer "show_lima_log;limactl delete -f \"${LIMA_INSTANCE}\""
+# Lima older than v0.15.1 needs `-pdpe1gb` for stability: https://github.com/lima-vm/lima/pull/1487
+QEMU_SYSTEM_X86_64="qemu-system-x86_64 -cpu host,-pdpe1gb" limactl start --tty=false "${LIMA_INSTANCE}" || (
+	show_lima_log
+	exit 1
+)
 lima nerdctl info
 
 image_name="lima-test-upgrade-containerd-${RANDOM}"