Добавить XML-запуск ARM64 через QEMU на x86

2026-05-07 02:18:18 +09:00
@@ -0,0 +1,128 @@
+#!/usr/bin/env python3
+from pathlib import Path
+import sys
+
+app_path = Path(sys.argv[1]) if len(sys.argv) > 1 else Path('/opt/virtuality/web/app.py')
+if not app_path.exists():
+    raise SystemExit(f'app.py not found: {app_path}')
+
+text = app_path.read_text()
+changed = []
+
+helpers = r'''
+
+def is_x86_host(profile: dict[str, Any]) -> bool:
+    return str(profile.get("arch", "")) in ("x86_64", "amd64")
+
+
+def is_arm64_guest_on_x86(guest_arch: str, profile: dict[str, Any]) -> bool:
+    return guest_arch == "aarch64" and is_x86_host(profile)
+
+
+def xml_escape(value: str) -> str:
+    return str(value).replace("&", "&amp;").replace("<", "&lt;").replace(">", "&gt;").replace('"', "&quot;")
+
+
+def arm64_emulation_xml(name: str, memory: int, vcpus: int, disk_path: Path, network_mode: str, bridge: str) -> str:
+    if network_mode == "nat":
+        interface_xml = f"""
+    <interface type='network'>
+      <source network='{xml_escape(network_core.NETWORK_NAME)}'/>
+      <model type='virtio'/>
+    </interface>"""
+    else:
+        interface_xml = f"""
+    <interface type='bridge'>
+      <source bridge='{xml_escape(bridge)}'/>
+      <model type='virtio'/>
+    </interface>"""
+    return f"""<domain type='qemu'>
+  <name>{xml_escape(name)}</name>
+  <memory unit='MiB'>{int(memory)}</memory>
+  <currentMemory unit='MiB'>{int(memory)}</currentMemory>
+  <vcpu placement='static'>{int(vcpus)}</vcpu>
+  <os>
+    <type arch='aarch64' machine='virt'>hvm</type>
+  </os>
+  <cpu mode='custom' match='exact'>
+    <model fallback='allow'>cortex-a57</model>
+  </cpu>
+  <features>
+    <gic version='3'/>
+  </features>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>restart</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-aarch64</emulator>
+    <disk type='file' device='disk'>
+      <driver name='qemu' type='qcow2'/>
+      <source file='{xml_escape(str(disk_path))}'/>
+      <target dev='vda' bus='virtio'/>
+    </disk>{interface_xml}
+    <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'>
+      <listen type='address' address='0.0.0.0'/>
+    </graphics>
+    <video>
+      <model type='virtio'/>
+    </video>
+    <console type='pty'>
+      <target type='serial' port='0'/>
+    </console>
+  </devices>
+</domain>
+"""
+
+
+def make_arm64_emulation_script(name: str, memory: int, vcpus: int, disk_path: Path, network_mode: str, bridge: str) -> str:
+    xml_path = Path('/tmp') / f"virtuality-{name}-arm64.xml"
+    xml_path.write_text(arm64_emulation_xml(name, memory, vcpus, disk_path, network_mode, bridge))
+    return f"virsh define {xml_path} && virsh start {name}"
+'''
+
+if 'def arm64_emulation_xml(' not in text:
+    marker = '\n\ndef valid_vm_name(name: str) -> bool:'
+    if marker not in text:
+        raise SystemExit('valid_vm_name marker not found')
+    text = text.replace(marker, helpers + marker, 1)
+    changed.append('ARM64 emulation XML helpers added')
+else:
+    changed.append('ARM64 emulation XML helpers already present')
+
+old_disk_cmd = '''    if source_type == "disk_image":
+        source_disk = Path(disk_image_path).resolve()
+        source_format = disk_image_format(source_disk)
+        convert_cmd = f"qemu-img convert -p -f {source_format} -O qcow2 {source_disk} {disk_path}"
+        virt_cmd = " ".join(cmd + ["--import", "--disk", f"path={disk_path},format=qcow2,bus=virtio", "--os-variant", "generic", "--network", network_arg, "--graphics", "vnc,listen=0.0.0.0", "--noautoconsole"])
+        cmd = ["bash", "-lc", f"set -euo pipefail; {convert_cmd}; {virt_cmd}"]
+    else:
+        cmd += ["--disk", f"path={disk_path},size={disk_size},format=qcow2,bus=virtio", "--cdrom", iso_path, "--os-variant", "generic", "--network", network_arg, "--graphics", "vnc,listen=0.0.0.0", "--noautoconsole"]
+'''
+new_disk_cmd = '''    if source_type == "disk_image":
+        source_disk = Path(disk_image_path).resolve()
+        source_format = disk_image_format(source_disk)
+        convert_cmd = f"qemu-img convert -p -f {source_format} -O qcow2 {source_disk} {disk_path}"
+        if is_arm64_guest_on_x86(resolved_guest_arch, profile):
+            create_cmd = make_arm64_emulation_script(name, memory, vcpus, disk_path, network_mode, bridge)
+            cmd = ["bash", "-lc", f"set -euo pipefail; {convert_cmd}; {create_cmd}"]
+        else:
+            virt_cmd = " ".join(cmd + ["--import", "--disk", f"path={disk_path},format=qcow2,bus=virtio", "--os-variant", "generic", "--network", network_arg, "--graphics", "vnc,listen=0.0.0.0", "--noautoconsole"])
+            cmd = ["bash", "-lc", f"set -euo pipefail; {convert_cmd}; {virt_cmd}"]
+    else:
+        if is_arm64_guest_on_x86(resolved_guest_arch, profile):
+            return vm_form_context(request, error="ARM64 ISO на x86-хосте пока не поддерживается. Загрузи готовый ARM64 .img/.qcow2 в разделе «Диски» и создай VM из готового диска.", form=form, status_code=400)
+        cmd += ["--disk", f"path={disk_path},size={disk_size},format=qcow2,bus=virtio", "--cdrom", iso_path, "--os-variant", "generic", "--network", network_arg, "--graphics", "vnc,listen=0.0.0.0", "--noautoconsole"]
+'''
+if old_disk_cmd in text:
+    text = text.replace(old_disk_cmd, new_disk_cmd, 1)
+    changed.append('ARM64 disk image on x86 uses direct libvirt XML')
+elif 'make_arm64_emulation_script' in text:
+    changed.append('ARM64 disk image XML path already present')
+else:
+    raise SystemExit('disk image create command marker not found')
+
+app_path.write_text(text)
+print('arm64 emulation xml patch applied:')
+for item in changed:
+    print(f'- {item}')