netplan apply命令报错，提示：undefined symbol: g_spawn_check_wait_status

现象描述

执行netplan apply命令时报错。提示如下：

(base) root@davinci-mini:~/.pip# netplan apply
 Traceback (most recent call last):
   File "/usr/sbin/netplan", line 23, in <module>
     netplan.main()
   File "/usr/share/netplan/netplan/cli/core.py", line 42, in main
     self.parse_args()
   File "/usr/share/netplan/netplan/cli/core.py", line 35, in parse_args
     import netplan.cli.commands
   File "/usr/share/netplan/netplan/cli/commands/__init__.py", line 18, in <module>
     from netplan.cli.commands.apply import NetplanApply
   File "/usr/share/netplan/netplan/cli/commands/apply.py", line 33, in <module>
     from netplan.cli.sriov import apply_sriov_config
   File "/usr/share/netplan/netplan/cli/sriov.py", line 27, in <module>
     import netplan.libnetplan as libnetplan
   File "/usr/share/netplan/netplan/libnetplan.py", line 44, in <module>
     lib = ctypes.CDLL(ctypes.util.find_library('netplan'))
   File "/usr/lib/python3.10/ctypes/__init__.py", line 374, in __init__
     self._handle = _dlopen(self._name, mode)
 OSError: /lib/aarch64-linux-gnu/libnetplan.so.0.0: undefined symbol: g_spawn_check_wait_status

解决方案

执行ldd -r查看so库链接状态和错误信息。

(base) root@davinci-mini:~/.pip# ldd -r /lib/aarch64-linux-gnu/libnetplan.so.0.0
        linux-vdso.so.1 (0x0000e7ffeafcc000)
        libgio-2.0.so.0 => /usr/local/Ascend/mxVision/opensource/lib/libgio-2.0.so.0 (0x0000e7ffead10000)
        libgobject-2.0.so.0 => /usr/local/Ascend/mxVision/opensource/lib/libgobject-2.0.so.0 (0x0000e7ffeac90000)
        libglib-2.0.so.0 => /usr/local/Ascend/mxVision/opensource/lib/libglib-2.0.so.0 (0x0000e7ffeab10000)
        libyaml-0.so.2 => /lib/aarch64-linux-gnu/libyaml-0.so.2 (0x0000e7ffeaae0000)
        libuuid.so.1 => /lib/aarch64-linux-gnu/libuuid.so.1 (0x0000e7ffeaac0000)
        libc.so.6 => /lib/aarch64-linux-gnu/libc.so.6 (0x0000e7ffea910000)
        /lib/ld-linux-aarch64.so.1 (0x0000e7ffeaf93000)
        libgmodule-2.0.so.0 => /usr/local/Ascend/mxVision/opensource/lib/libgmodule-2.0.so.0 (0x0000e7ffea8e0000)
        libz.so.1 => /lib/aarch64-linux-gnu/libz.so.1 (0x0000e7ffea8b0000)
        libselinux.so.1 => /lib/aarch64-linux-gnu/libselinux.so.1 (0x0000e7ffea870000)
        libresolv.so.2 => /lib/aarch64-linux-gnu/libresolv.so.2 (0x0000e7ffea840000)
        libffi.so.7 => /usr/local/Ascend/mxVision/opensource/lib/libffi.so.7 (0x0000e7ffea810000)
        libpthread.so.0 => /lib/aarch64-linux-gnu/libpthread.so.0 (0x0000e7ffea7f0000)
        libdl.so.2 => /lib/aarch64-linux-gnu/libdl.so.2 (0x0000e7ffea7d0000)
        libpcre2-8.so.0 => /lib/aarch64-linux-gnu/libpcre2-8.so.0 (0x0000e7ffea730000)
 undefined symbol: g_spawn_check_wait_status     (/lib/aarch64-linux-gnu/libnetplan.so.0.0)

根据以上信息发现系统库/lib/aarch64-linux-gnu/libnetplan.so.0.0链接到多个mxVision第三方开源库，可以推测是mxVision的第三方开源库与系统版本不兼容导致。

需要确定mxVision是否为原生ubuntu 22.04下编译构建。

编辑环境变量文件。
```
~/.bashrc
```

将CANN和mxVision的环境变量注释。

# . /usr/local/Ascend/ascend-toolkit/set_env.sh
# . /usr/local/Ascend/mxVision/set_env.sh

输入:wq保存退出。
使用新的终端登录并再次执行netplan apply。
```
(base) root@davinci-mini:~# netplan apply
(base) root@davinci-mini:~#
```
命令执行成功。

注意如果是DHCP连接路由器的网口，执行netplan apply后IP可能会改变。

重新执行ldd -r发现libnetplan.so.0.0库已经链接到了正常的系统库。

 ldd -r /lib/aarch64-linux-gnu/libnetplan.so.0.0
         linux-vdso.so.1 (0x0000e7ffd197e000)
         libgio-2.0.so.0 => /lib/aarch64-linux-gnu/libgio-2.0.so.0 (0x0000e7ffd16f0000)
         libgobject-2.0.so.0 => /lib/aarch64-linux-gnu/libgobject-2.0.so.0 (0x0000e7ffd1670000)
         libglib-2.0.so.0 => /lib/aarch64-linux-gnu/libglib-2.0.so.0 (0x0000e7ffd1520000)
         libyaml-0.so.2 => /lib/aarch64-linux-gnu/libyaml-0.so.2 (0x0000e7ffd14f0000)
         libuuid.so.1 => /lib/aarch64-linux-gnu/libuuid.so.1 (0x0000e7ffd14d0000)
         libc.so.6 => /lib/aarch64-linux-gnu/libc.so.6 (0x0000e7ffd1320000)
         /lib/ld-linux-aarch64.so.1 (0x0000e7ffd1945000)
         libgmodule-2.0.so.0 => /lib/aarch64-linux-gnu/libgmodule-2.0.so.0 (0x0000e7ffd1300000)
         libz.so.1 => /lib/aarch64-linux-gnu/libz.so.1 (0x0000e7ffd12d0000)
         libmount.so.1 => /lib/aarch64-linux-gnu/libmount.so.1 (0x0000e7ffd1270000)
         libselinux.so.1 => /lib/aarch64-linux-gnu/libselinux.so.1 (0x0000e7ffd1230000)
         libffi.so.8 => /lib/aarch64-linux-gnu/libffi.so.8 (0x0000e7ffd1210000)
         libpcre.so.3 => /lib/aarch64-linux-gnu/libpcre.so.3 (0x0000e7ffd1190000)
         libm.so.6 => /lib/aarch64-linux-gnu/libm.so.6 (0x0000e7ffd10f0000)
         libblkid.so.1 => /lib/aarch64-linux-gnu/libblkid.so.1 (0x0000e7ffd10a0000)
         libpcre2-8.so.0 => /lib/aarch64-linux-gnu/libpcre2-8.so.0 (0x0000e7ffd1000000)

修改“/home/HwHiAiUser/sample/notebooks/start_notebook.sh jupyter”启动脚本如下：

. /usr/local/Ascend/ascend-toolkit/set_env.sh
. /usr/local/Ascend/mxVision/set_env.sh
if [ $# -eq 1 ];then
     jupyter lab --ip $1 --allow-root --no-browser
else
    jupyter lab --ip 192.168.137.100 --allow-root --no-browser
fi

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