systemdswitched-root的deserialize参数有什么用

本篇内容主要讲解“systemd switched-root的deserialize参数有什么用”,感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷,实用性强。下面就让小编来带大家学习“systemd switched-root的deserialize参数有什么用”吧!

为茅箭等地区用户提供了全套网页设计制作服务,及茅箭网站建设行业解决方案。主营业务为成都网站建设、网站制作、茅箭网站设计,以传统方式定制建设网站,并提供域名空间备案等一条龙服务,秉承以专业、用心的态度为用户提供真诚的服务。我们深信只要达到每一位用户的要求,就会得到认可,从而选择与我们长期合作。这样,我们也可以走得更远!

systemd --switched-root --deserialize的这两个参数是内部用的,用于源代码中,不对外提供接口。

系统中可以通过ps命令来查看,为1号进程:

实例1:

root          1  0.0  0.4  45808  4092 ?        Ss   Aug22   0:02 /usr/lib/systemd/systemd --system --deserialize 15

实例2:

root          1  0.0  0.4 128096  4144 ?        Ss   Aug22   0:02 /usr/lib/systemd/systemd --switched-root --system --deserialize 21

These are intentionally undocumented internal parts of systemd. Very simply, therefore:

  • --deserialize is used to restore saved internal state that a previous invocation of systemdexec()ing this one, has written out to a file. Its option argument is an open file descriptor for that process.

  • --switched-root is used to tell this invocation of systemd that it has been invoked from systemd managing an initramfs, and so should behave accordingly — including turning off some of the behaviour otherwise caused by --deserialize.

It's a good answer. To expand on this a bit: systemd running with --deserialize --switched-root essentially means systemd was also used in the initramfs. Nowadays this is pretty common, so those two options are to be expected in the command line of PID 1. 

到此,相信大家对“systemd switched-root的deserialize参数有什么用”有了更深的了解,不妨来实际操作一番吧!这里是创新互联网站,更多相关内容可以进入相关频道进行查询,关注我们,继续学习!


当前题目:systemdswitched-root的deserialize参数有什么用
浏览地址:http://pwwzsj.com/article/ggcsgp.html