Linux密钥保留服务是一种新的机制，其用途是保存与安全相关的信息，让Linux内核可以快速地访问这些信息。
The Linux key retention service is a new mechanism introduced to hold security-related information for fast access by the Linux kernel.
失效的文件服务器进程必须与仍在运行的AFS文件服务器重新同步，但是不能添加可能在它断开后保存在本地的新更改。
File server processes that fail have to resynchronize with the still-running AFS file servers, but cannot add new changes that might have been preserved locally after it was cut off.
一个同步的框架帮助你在离线的时候保存完成的动作，并当它重新连上服务器时与服务器同步。
A sync framework to help you store actions done while offline and sync them with a server once back on the network.
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