先理解原理：看动图 + 手动模拟小数组
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Instead, other nodes will use the correct information to cross-reference your incorrect node. This is called “Decentralization,” meaning all the information is stored in multiple places.
A Package Manager for OSTree: rpm-ostree#OSTree manages the files that make up the system, but what does that mean for packages that want to write to /usr or /lib? That’s why integration with the package manager is needed. In the case of RedHat OSes, it’s rpm-ostree that replaces dnf and yum.