磁盘管理综合测试题

创建RAID5

[root@localhost ~]# mdadm -Cv /dev/md5 -l 5 -n 3 -x 1 /dev/sdb[1234]    //创建RAID5

 

建立物理卷

[root@localhost ~]# pvcreate /dev/md5    //将/dev/md5建成物理卷
       WARNING: ext4 signature detected on /dev/md5 at offset 1080. Wipe it? [y/n]: y
       Wiping ext4 signature on /dev/md5.
       Physical volume "/dev/md5" successfully created

 

建立卷组

[root@localhost ~]# vgcreate myvg /dev/md5     //将md5装换成卷组，命名为myvg
       Volume group "myvg" successfully created

 

建立逻辑卷

[root@localhost ~]# lvcreate -L +8G -n mylv myvg   //将卷组转换成8G存储空间的逻辑卷，命名为mylv
       Logical volume "mylv" created.
[root@localhost ~]# mkfs.ext4 /dev/myvg/mylv    //格式化，转化成ext4文件系统

[root@localhost ~]# mount /dev/myvg/mylv /usr/local/apache/htdocs/   //挂载到网页目录上

 

自动挂载

[root@localhost ~]# vim /etc/fstab    //自动挂载，支持磁盘配额的方式
/dev/myvg/mylv      /usr/local/apache/htdocs   ext4   defaults,usrquota,grpquota       0  0

 

创建文件测试

[root@localhost ~]# cd /usr/local/apache/htdocs/      //安装源码之后在htdocs下新建测试文件index.html
[root@localhost htdocs]# touch index.html
[root@localhost htdocs]# vim index.html
[root@localhost htdocs]# lynx 127.0.0.1     //验证一下
[root@localhost htdocs]# systemctl stop firewalld.service      //关闭防火墙，用网页测试
192.168.100.105

 

创建用户，添加磁盘配额
[root@localhost ~]# mount -o remount,usrquota,grpquota /usr/local/apache/htdocs/      //
[root@localhost ~]# mount | tail -1    //查询挂载并显示最后一行
/dev/mapper/myvg-mylv on /usr/local/apache/htdocs type ext4 (rw,relatime,seclabel,quota,usrquota,grpquota,stripe=256,data=ordered)
[root@localhost ~]# quotacheck -avug         //扫描文件系统，并建立Quota文件
[root@localhost ~]# ll /usr/local/apache/htdocs/     //显示/usr/local/apache/htdocs/文件的详情
[root@localhost ~]# quotaon -auvg       //启动全部用户与组的quota服务
/dev/mapper/myvg-mylv [/usr/local/apache/htdocs]: group quotas turned on
/dev/mapper/myvg-mylv [/usr/local/apache/htdocs]: user quotas turned on
[root@localhost ~]# useradd tanxiaojun2       //创建用户tanxiaojun2
[root@localhost ~]# edquota -u tanxiaojun2      //编辑用户、组的限制与宽限时间
  /dev/mapper/myvg-mylv             0       8000       10000      0         80       100
[root@localhost ~]# ll /usr/local/apache/htdocs/