bad superblock on cgroup, missing codepage or helper program

升级WSL2 到1.1.6.0 后Docker 报以下错误：

mount: /sys/fs/cgroup/cpuset: wrong fs type, bad option, bad superblock on cgroup, missing codepage or helper program, or other error.
mount: /sys/fs/cgroup/cpu: wrong fs type, bad option, bad superblock on cgroup, missing codepage or helper program, or other error.
mount: /sys/fs/cgroup/cpuacct: wrong fs type, bad option, bad superblock on cgroup, missing codepage or helper program, or other error.
mount: /sys/fs/cgroup/blkio: wrong fs type, bad option, bad superblock on cgroup, missing codepage or helper program, or other error.
mount: /sys/fs/cgroup/memory: wrong fs type, bad option, bad superblock on cgroup, missing codepage or helper program, or other error.
mount: /sys/fs/cgroup/devices: wrong fs type, bad option, bad superblock on cgroup, missing codepage or helper program, or other error.
mount: /sys/fs/cgroup/freezer: wrong fs type, bad option, bad superblock on cgroup, missing codepage or helper program, or other error.
mount: /sys/fs/cgroup/net_cls: wrong fs type, bad option, bad superblock on cgroup, missing codepage or helper program, or other error.
mount: /sys/fs/cgroup/perf_event: wrong fs type, bad option, bad superblock on cgroup, missing codepage or helper program, or other error.
mount: /sys/fs/cgroup/net_prio: wrong fs type, bad option, bad superblock on cgroup, missing codepage or helper program, or other error.
mount: /sys/fs/cgroup/hugetlb: wrong fs type, bad option, bad superblock on cgroup, missing codepage or helper program, or other error.
mount: /sys/fs/cgroup/pids: wrong fs type, bad option, bad superblock on cgroup, missing codepage or helper program, or other error.
mount: /sys/fs/cgroup/rdma: wrong fs type, bad option, bad superblock on cgroup, missing codepage or helper program, or other error.
mount: /sys/fs/cgroup/misc: wrong fs type, bad option, bad superblock on cgroup, missing codepage or helper program, or other error.
Starting Docker: docker%   

解决方案：

在WSL中编辑 /etc/wsl.conf ， 如果没有这个文件就创建这个文件。 添加下面的行。

[boot]
systemd=true

以管理员身份运行PowerShell，在PowerShell中 运行命令 wsl --shutdown 关闭WSL， 然后在打开WSL. 就行了