“”“
WSL2 Auto-Recovery Engine v1 — WSL2实例自愈恢复 (evo_iter 2026-07-16)

基于今日 AUTOHEAL 成功修复 WSL2 意外停止事件 (12:07):

• WSL2 Ubuntu实例意外停止 (WSL内核仍在，但实例Stopped)
• 修复: wsl –terminate + wsl –distribution Ubuntu → Running (PASS)
• 联动: 备份目录缺失也被同步修复 (mkdir五级目录)

本模块功能:

1. check_wsl_status() — 检查WSL2完整状态 (内核+实例)
2. diagnose_stop_reason() — 推断停止原因 (实例挂起/内核崩溃/资源不足)
3. auto_restart_wsl() — 多级重启策略 (优雅重启→强制终止→完整重建)
4. verify_post_recovery() — 恢复后验证 (进程响应/磁盘挂载/网络)
5. wsl_health_snapshot() — WSL2健康快照 (内存/磁盘/进程/内核版本)

重启策略 (渐进式):
Level 1: wsl –terminate + restart (最常用，今日成功)
Level 2: wsl –shutdown + 完整重启
Level 3: wsl –unregister + 重新导入 (数据无损)

用法:
python evo_wsl_recovery.py –check
python evo_wsl_recovery.py –recover
python evo_wsl_recovery.py –snapshot
python evo_wsl_recovery.py –json

生成日期: 2026-07-16
触发事件: AUTOHEAL 12:07 — WSL2停止#1 + 修复成功
“”“

import os
import json
import time
import subprocess
from pathlib import Path
from datetime import datetime, timezone, timedelta
from dataclasses import dataclass, field
from typing import Dict, Optional, Tuple, List
from enum import Enum

TZ = timezone(timedelta(hours=8))
HERMES_ROOT = Path(os.path.expandvars(r“%USERPROFILE%“)) / “.hermes”
WSL_STATE_FILE = HERMES_ROOT / “logs” / “.wsl_recovery_state.json”

恢复超时 (秒)

RESTART_TIMEOUT_L1 = 30 # terminate + restart
RESTART_TIMEOUT_L2 = 90 # shutdown + full restart
RESTART_TIMEOUT_L3 = 300 # unregister + reimport

class WslStatus(Enum):
RUNNING = “running”
STOPPED = “stopped”
KERNEL_STOPPED = “kernel_stopped”
NOT_INSTALLED = “not_installed”
UNKNOWN = “unknown”

class RecoveryLevel(Enum):
NONE = 0
L1_TERMINATE_RESTART = 1
L2_SHUTDOWN_FULL = 2
L3_UNREGISTER_REIMPORT = 3

@dataclass
class WslHealthSnapshot:
“”“WSL2健康快照”““
timestamp: str
status: str
kernel_version: str = “”
distribution: str = “”
distro_state: str = “”
memory_usage_mb: int = 0
disk_usage_pct: float = 0.0
processes_running: int = 0
network_available: bool = False
last_error: str = “”

@dataclass
class RecoveryResult:
“”“恢复操作结果”““
success: bool
level: RecoveryLevel
attempts: int
duration_seconds: float
pre_status: str
post_status: str
error_message: str = “”
detail: str = “”

class WslRecoveryEngine:
“”“WSL2自愈恢复引擎”““

def __init__(self):
    self.state = self._load_state()

def _load_state(self) -> dict:
    if WSL_STATE_FILE.exists():
        try:
            return json.loads(WSL_STATE_FILE.read_text(encoding="utf-8"))
        except Exception:
            pass
    return {
        "total_checks": 0,
        "total_stops_detected": 0,
        "total_recoveries": 0,
        "successful_recoveries": 0,
        "last_check_at": None,
        "last_recovery_at": None,
        "recovery_history": [],
        "consecutive_failures": 0,
    }

def _save_state(self):
    # 保留最近20条恢复历史
    if len(self.state.get("recovery_history", [])) > 20:
        self.state["recovery_history"] = self.state["recovery_history"][-20:]
    WSL_STATE_FILE.parent.mkdir(parents=True, exist_ok=True)
    WSL_STATE_FILE.write_text(json.dumps(self.state, ensure_ascii=False, indent=2), encoding="utf-8")

def _run_wsl_cmd(self, args: List[str], timeout: int = 30) -> Tuple[int, str, str]:
    """执行wsl命令"""
    try:
        result = subprocess.run(
            ["wsl"] + args,
            capture_output=True,
            text=True,
            timeout=timeout,
            shell=True if os.name == "nt" else False,
        )
        return result.returncode, result.stdout.strip(), result.stderr.strip()
    except subprocess.TimeoutExpired:
        return -1, "", "timeout"
    except FileNotFoundError:
        return -2, "", "wsl not found"
    except Exception as e:
        return -3, "", str(e)

def check_wsl_status(self) -> Tuple[WslStatus, str]:
    """检查WSL2完整状态"""
    # 1. 检查wsl命令是否可用
    rc, out, err = self._run_wsl_cmd(["--status"], timeout=10)
    if rc == -2:
        return WslStatus.NOT_INSTALLED, "WSL未安装"
    if rc != 0:
        return WslStatus.UNKNOWN, f"wsl --status 失败: {err[:120]}"

    has_kernel = "kernel" in out.lower() or "default distribution" in out.lower()
    has_running = "running" in out.lower()

    # 2. 检查实例状态
    rc2, out2, err2 = self._run_wsl_cmd(["-l", "-v"], timeout=10)
    if rc2 != 0:
        if has_kernel:
            return WslStatus.KERNEL_STOPPED, f"内核运行但实例列表失败: {err2[:120]}"
        return WslStatus.UNKNOWN, f"wsl -l -v 失败: {err2[:120]}"

    # 解析实例状态
    distro_found = False
    distro_running = False
    distro_name = ""
    for line in out2.split("\n"):
        # 格式: "  Ubuntu-26.04    Running    2" 或 "  Ubuntu    Stopped    2"
        parts = line.strip().split()
        if len(parts) >= 2 and parts[0].lower().startswith(("ubuntu", "debian", "alpine")):
            distro_found = True
            distro_name = parts[0]
            distro_running = "running" in parts[1].lower()

    if not distro_found:
        if has_kernel:
            return WslStatus.KERNEL_STOPPED, "WSL内核运行但无Linux发行版实例"
        return WslStatus.NOT_INSTALLED, "未找到Linux发行版"

    if distro_running:
        return WslStatus.RUNNING, f"{distro_name} 运行中"
    else:
        return WslStatus.STOPPED, f"{distro_name} 已停止"

def diagnose_stop_reason(self) -> str:
    """推断WSL2停止原因"""
    reasons = []

    # 检查是否为资源不足
    try:
        import psutil
        mem = psutil.virtual_memory()
        if mem.percent > 90:
            reasons.append(f"内存不足 ({mem.percent:.1f}%), 可能被OOM终止")
    except ImportError:
        p

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