1. shuwdown wsl

    wsl --shutdown

  2. find out wsl file location
    一般情况下wsl文件位于：C:\Users\Administrator\AppData\Local\Packages\CanonicalGroupLimited.UbuntuonWindows_79rhkp1fndgsc\LocalState\ext4.vhdx

  3. 备份wsl

    wsl --export name target_file

    name可以通过wsl -l命令进行查看

  4. 运行diskpart

    select vdisk file="your location"
compact vdisk