Docker检查点因SQL Server容器而失败

Question

从头启动Microsoft SQL Server（在Linux上）容器后...

$ docker run -e 'ACCEPT_EULA=Y' -e 'SA_PASSWORD=Pa$$word' -p 1433:1433 \
            -d --name mssql microsoft/mssql-server-linux

...创建Docker 检查点 ...

$ docker checkpoint create mssql cp1

...失败：

Error response from daemon: Cannot checkpoint container mssql: 
failed to read checkpoint reader: 
open /var/lib/docker/containers/f2eb8d17e95630332bbeab887b9e03a1b91efcd8907f69b82805a788331316e2/checkpoints/cp1/cgroup.img: 
no such file or directory

这是在Ubuntu 18.04上，安装了CRIU并启用了实验模式：

$ docker version
Client:
 Version:           18.09.6
 API version:       1.39
 Go version:        go1.10.8
 Git commit:        481bc77
 Built:             Sat May  4 02:35:57 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          18.09.6
  API version:      1.39 (minimum version 1.12)
  Go version:       go1.10.8
  Git commit:       481bc77
  Built:            Sat May  4 01:59:36 2019
  OS/Arch:          linux/amd64
  Experimental:     true

对其他容器进行检查点工作正常，只能与SQL映像一起运行。

我是否遗漏了任何东西，或者这可能只是一个错误docker checkpoint（目前是实验功能）？

Answer 1

从 Docker 开始19.03.1，这似乎不再是问题。