Linux pv操作的相关内容

Linux LVM的PV操作

pvcreate PV创建 pvmove 将PV上存储数据PE的数据移动到其他PE上。 pvresize 重设PV的大小 pvdiplay 查看PC详细信息 pvremove 删除PV pvscan 扫描PV pvck 检测PV pvs PV摘要信息创建PV -v 显示过程 -f 强制创建PV -...

想请问linux应用程序使用信号量实现PV操作的问题

我的问题是，比如实现进程的同步，我在创建子进程之间创建信号量，在fork之后，不是父子进程拥有独立的数据空间吗？那么父子进程的PV操作如何影响同一个信号量的呢，比如父进程先P操作，若信号量初始值为0，此时为0-1=-1，但是这个不是父进程的吗？子进程为什么其中的信号量也-1了呢？

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更新时间 2023-04-04 09:58:56

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