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本篇內容主要講解“systemd switched-root的deserialize參數有什么用”，感興趣的朋友不妨來看看。本文介紹的方法操作簡單快捷，實用性強。下面就讓小編來帶大家學習“systemd switched-root的deserialize參數有什么用”吧!
systemd --switched-root --deserialize的這兩個參數是內部用的，用于源代碼中，不對外提供接口。
系統中可以通過ps命令來查看，為1號進程：
實例1：
root 1 0.0 0.4 45808 4092 ? Ss Aug22 0:02 /usr/lib/systemd/systemd --system --deserialize 15
實例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 systemd, exec()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. |
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