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1.通过yum 方式 安装quota 复制代码 代码如下:#yum install quota 2.VirtualBox创建硬盘 （2）配置新硬盘 选择Create new disk 选择VHD （virtual hard disk） 输入硬盘镜像名字 （3）格式化硬盘 复制代码 代码如下:#mkfs -t ext4 /dev/sdb （4）为硬盘空间寻找目录 复制代码 代码如下:#mount /dev/sdb /home 如果有需要长期挂着，请自行百度如何修改/etc/fstab，本人修改多次，让系统多次崩溃，最终放弃，选择在 vi /etc/rc.local 里面，业余的加入 mount /dev/sdb /home 这条命令。 3.格式化新创建的硬盘 复制代码 代码如下:[root@localhost ~]# mkfs -t ext4 /dev/sdb 复制代码 代码如下:mke2fs 1.41.12 (12-Apr-2016) /dev/sdb is entire device, not just one partition! Proceed anyway? (y,n) y Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 524288 inodes, 2097152 blocks 104857 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=2147483648 64 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632 Writing inode tables: done This filesystem will be automatically checked every 24 mounts or 挂在硬盘到/home目录 复制代码 代码如下:[root@localhost ~]# mount /dev/sdb /home/ [root@localhost ~]# mount -o remount,usrquota,grpquota /home [root@localhost ~]# mount 复制代码 代码如下:/dev/mapper/VolGroup-lv_root on / type ext4 (rw) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) devpts on /dev/pts type devpts (rw,gid=5,mode=620) tmpfs on /dev/shm type tmpfs (rw,rootcontext="system_u:object_r:tmpfs_t:s0") /dev/sda1 on /boot type ext4 (rw) none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw) /dev/sdb on /home type ext4 (rw,usrquota,grpquota) 为系统设置启动后自动挂载硬盘 复制代码 代码如下:[root@localhost ~]#vi /etc/rc.local 添加 复制代码 代码如下:mount /dev/sdb /home mount -o remount,usrquota,grpquota /home 备注：本人并没有采取修改/etc/fstab 的方法，因为该方法容易因为输入的字符或格式不对导致系统崩溃，所以采取了修改用户启动文件的方法 4.配置quota 复制代码 代码如下:[root@localhost ~]#quotacheck -avug 对整个系统含有 usrquota, grpquota 参数的文件系统进行 quotacheck 扫描 quotacheck: Your kernel probably supports journaled quota but you are not using it. Consider switching to journaled quota to avoid running quotacheck after an unclean shutdown. quotacheck: Scanning /dev/sdb [/home] done quotacheck: Cannot stat old user quota file: No such file or directory quotacheck: Cannot stat old group quota file: No such file or directory quotacheck: Cannot stat old user quota file: No such file or directory quotacheck: Cannot stat old group quota file: No such file or directory quotacheck: Checked 2 directories and 0 files quotacheck: Cannot create new quotafile /home/aquota.user.new: Permission denied quotacheck: Cannot initialize IO on new quotafile: Permission denied quotacheck: Cannot create new quotafile /home/aquota.group.new: Permission denied quotacheck: Cannot initialize IO on new quotafile: Permission denied 出现报错，报错原因是因为没有关闭selinux 复制代码 代码如下:[root@localhost ~]# setenforce 0 [root@localhost ~]# quotacheck -avug quotacheck: Your kernel probably supports journaled quota but you are not using it. Consider switching to journaled quota to avoid running quotacheck after an unclean shutdown. quotacheck: Scanning /dev/sdb [/home] done quotacheck: Cannot stat old user quota file: No such file or directory quotacheck: Cannot stat old group quota file: No such file or directory quotacheck: Cannot stat old user quota file: No such file or directory quotacheck: Cannot stat old group quota file: No such file or directory quotacheck: Checked 2 directories and 0 files quotacheck: Old file not found. quotacheck: Old file not found. 成功生成 复制代码 代码如下:[root@localhost ~]#quotaon -auvg 启动quota 5.为用户添加硬盘空间限制 复制代码 代码如下:[root@localhost ~]# useradd quotauser1 [root@localhost ~]# passwd quotauser1 复制代码 代码如下:[root@localhost ~]# edquota -u quotauser1 Disk quotas for user quotauser1 (uid 500): Filesystem blocks soft hard inodes soft hard /dev/sdb 16 500000 600000 4 0 0 限制用户quotauser1的使用空间为500M，最大限制是600M 6.测试 复制代码 代码如下:[quotauser1@localhost ~]$ dd if=/dev/zero of=bigfile bs=1M count=700 sdb: warning, user block quota exceeded. sdb: write failed, user block limit reached. dd: writing `bigfile': Disk quota exceeded 586+0 records in 585+0 records out 614379520 bytes (614 MB) copied, 2.75934 s, 223 MB/s 复制代码 代码如下:[quotauser1@localhost ~]$ ls bigfile 复制代码 代码如下:[quotauser1@localhost ~]$ ls -l total 599984 -rw-rw-r--. 1 quotauser1 quotauser1 614379520 Sep 28 03:28 bigfile 可以发现文件的大小被限制了 |
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