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CentOS对已有扩容

环境 操作系统:Centos 7 需求 对已有的一块挂载磁盘进行扩容 流程 添加一块新磁盘 查看磁盘 fdisk -l 比如新加的磁盘名称为:/dev/vdd 2....将新添加的磁盘创建物理 pvcreate /dev/vdd 将新创建的物理加入已存在需要扩容的 查看信息 vgdisplay 加入第二步中新创建的 vgextend centos /dev.../vdd 将新添加的大小全部给到 lvextend -l +100%FREE /dev/mapper/centos-lvname 重新加载大小 resize2fs /dev/mapper/centos-lvname...查看 df -Th 注意项 如果你的磁盘是使用的和本文章这样是将多个磁盘使用LVM通过创建物理然后创建,通过挂载磁盘的方式,扩容时不要在已经初始化为物理的磁盘上直接扩容 比如,/dev/vda...这块磁盘已经被创建成物理并且添加至,不要在这块磁盘上直接扩容这块磁盘的大小,目前已知华为云是可以直接在已有的磁盘上直接扩容,这种方式扩容了也没法用 要新加一块新的磁盘,然后按照本文章操作即可

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    Docker高级应用之动态绑定

    之前介绍过Docker高级应用之动态扩展容器空间大小(地址:http://www.linuxidc.com/Linux/2015-01/112245.htm),本次介绍如何动态的绑定。...为什么使用呢,比如想把物理机里的目录给予容器共享,或者把物理机的一个目录作为共享目录,做日志搜集等等功能。...1.8T  22G  1.7T  2% /.dockerenv 可以看到挂载完成,并且容器里的/tmp/software与/data/software里内容一致 但上面只是在创建并启动容器的时候可以挂载...fi 然后在给已经存在的test容器里新挂载一个,把本地的/data/docker-dir挂载到/tmp/docker-dir 当前物理机/data/docker-dir里内容是 root@docker-test2...上面就是介绍如何动态的绑定,只是一种方法,不太建议使用,有问题请留言。

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    Linux系统管理--硬盘、、逻辑和文件系统

    “介绍Linux中硬盘、、逻辑和文件系统的关系。” 01 — 增加两个硬盘 增加两个20GB的硬盘,注意新增加的硬盘不能取代原来安装了操作系统的0号硬盘,不然无法启动。...创建逻辑 在对逻辑卷进行切割时有两种计量单位。第一种是以容量为单位,所使用的参数为-L。例如,使用-L150M 生成一个大小为 150MB 的逻辑。...Linux 系统会把 LVM 中的逻辑设备存放在/dev 设备目录中(实际上是做了一个符号链接),同时会以的名称来建立一个目录,其中保存了逻辑的设备映射文件(即/dev/名称/逻辑名称)。...用户在使用存储设备时感知不到设备底层的架构和布局,更不用关心底层是由多少块硬盘组成的,只要中有足够的资源,就可以一直为逻辑扩容。...把上一个实验中的逻辑 lvu01 扩展至 12GB。

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    Linux中的磁盘、分区、物理、逻辑等概念的理解及磁盘扩容操作

    例如,在Ubuntu中,你可以将整个磁盘或其某个分区转换为物理。但是物理本身通常不会被直接挂载,相反,它们会被组合成(VG),然后从中创建逻辑(LV)。...(Volume Group, VG) 是由一个或多个物理组成的集合,它是逻辑的基础。提供了比单个物理更大的存储池,允许在其上创建多个逻辑。查看命令: sudo vgs 5....步骤3:创建物理 将新创建的分区转换为物理: sudo pvcreate /dev/sdb1 步骤4:扩展 将新创建的物理添加到现有的中: sudo vgextend vg_name /dev.../sdb1 这里的vg_name需要替换为你实际的名称。... 是挂载选项,例如 defaults(表示使用默认选项)、noauto(表示不自动挂载)、ro(只读模式)、rw(读写模式)等。

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    【蓝桥杯Java_C·从零开始】第五节(一)、BigInteger的使用

    BigInteger四则运算 累加值:(从1++++到无限大) 测试数据: 结果: BigInteger取模运算 外星日历 BigInteger四则运算 package Action; import java.math.BigInteger...BigInteger divide = x.divide(y); System.out.println(divide); } } 累加值:(从1++++到无限大) package Action; import java.math.BigInteger...; import java.util.Scanner; public class demo { public static void main(String[] args) { //从1++++...50000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 BigInteger取模运算 package Action; import java.math.BigInteger...package Action; import java.math.BigInteger; public class demo { public static void main(String[]

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    吐血整理 | Java并发编程 72

    7、 Java中CyclicBarrier 和 CountDownLatch有什么不同? CyclicBarrier和 CountDownLatch 都可以用来让一线程等待其它线程。...很显然你可以将集合类分成两,线程安全和非线程安全的。Vector 是用同步方法来实现线程安全的, 而和它相似的ArrayList不是线程安全的。 11、 Java中什么是竞态条件?...当run()或者 call()方法执行完的时候线程会自动结束,如果要手动结束一个线程,可以用volatile 布尔变量来退出run()方法的循环或者是取消任务来中断线程。...ThreadGroup是一个类,它的目的是提供关于线程的信息。 ThreadGroup API比较薄弱,它并没有比Thread提供了更多的功能。...Executor框架同java.util.concurrent.Executor 接口在Java 5中被引入。Executor框架是一个根据一执行策略调用,调度,执行和控制的异步任务的框架。

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    Java线程ThreadGroup

    3 线程的构造 java.lang.ThreadGroup 提供了两个构造函数: Constructor Description ThreadGroup(String name) 根据线程名称创建线程...当终止最后一个线程或它的最后一个线程被销毁时,守护线程自动销毁; 16.public boolean isDestroyed() 分析:测试此线程是否已被销毁; 17.public void...tg.getName () + " thread group: " + agc); tg.list (); } 输出如下: Active thread groups in main thread group: 2 java.lang.ThreadGroup...[name=main,maxpri=10] Thread[main,5,main] java.lang.ThreadGroup[name=subgroup 1,maxpri=10]...java.lang.ThreadGroup[name=subgroup 2,maxpri=10] 5 终止线程中的所有线程 一个线程不应由其他线程来强制中断或停止,而是应该由线程自己自行停止。

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    基于遗传算法(C#编写)的智能系统优化

    主要记录一下利用C#开发基于遗传算法的智能系统的学习过程,大家或许对智能系统并不了解(ps:其实我也只是大致了解了问题的描述),这儿给出一篇文献可以参阅(基于遗传算法的在线考试系统自动策略优化...指标设置 新建自己题库可以对题型进行详细的分类,方便出题工作。针对知识点、难度、教学要求、分数四项指标进行细分。 知识点:可根据惯例或教学要求进行分类。...如:概念、实验室及辅助检查、机制、发病原因、机理改变等; 难度:区分难度的好处在于出的时候可以方便的、适当的选择要出题的难度,方便对不同程度的参考人员进行考试; 教学要求:区分难度的好处在于出的时候可以方便的

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