本文链接:
Linuxc盘配额配置步骤
我们先把硬碟弄成逻辑卷,再在此基础上进行c盘配额。
四块硬碟为/dev/sdb,/dev/sdc,/dev/sdd,大小都为20G。
[root@localhost ~]# fdisk -l| grep /dev/sd
Disk /dev/sda: 42.9 GB, 42949672960 bytes, 83886080 sectors
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 83886079 40893440 8e Linux LVM
Disk /dev/sdb: 21.5 GB, 21474836480 bytes, 41943040 sectors
Disk /dev/sdc: 21.5 GB, 21474836480 bytes, 41943040 sectors
Disk /dev/sdd: 21.5 GB, 21474836480 bytes, 41943040 sectors
Disk /dev/sde: 21.5 GB, 21474836480 bytes, 41943040 sectors
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用fdisk命令分别为四块新硬碟分区,都分为一个主分区磁盘配额 linux,并打算做LVM,改systemid为8e。
[root@localhost ~]#
[root@localhost ~]# fdisk -l | grep /dev/sd
Disk /dev/sda: 42.9 GB, 42949672960 bytes, 83886080 sectors
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 83886079 40893440 8e Linux LVM
Disk /dev/sdb: 21.5 GB, 21474836480 bytes, 41943040 sectors
/dev/sdb1 2048 41943039 20970496 8e Linux LVM
Disk /dev/sdc: 21.5 GB, 21474836480 bytes, 41943040 sectors
/dev/sdc1 2048 41943039 20970496 8e Linux LVM
Disk /dev/sdd: 21.5 GB, 21474836480 bytes, 41943040 sectors
/dev/sdd1 2048 41943039 20970496 8e Linux LVM
Disk /dev/sde: 21.5 GB, 21474836480 bytes, 41943040 sectors
/dev/sde1 2048 41943039 20970496 8e Linux LVM
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创建逻辑卷,更详尽讲解可到笔者的博客:
或则也可以参考其他博主的博客。
[root@localhost ~]# pvcreate /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1 //用四块磁盘创建物理卷
Physical volume "/dev/sdb1" successfully created.
Physical volume "/dev/sdc1" successfully created.
Physical volume "/dev/sdd1" successfully created.
Physical volume "/dev/sde1" successfully created.
[root@localhost ~]# vgcreate My_vg1 /dev/sd[b-e]1 //创建卷组,名为My_vg1
Volume group "My_vg1" successfully created
[root@localhost ~]# lvcreate -L 40G -n My_lv1 My_vg1 //在卷组My_vg1上创建名为My_lv1的逻辑卷
Logical volume "My_lv1" created.
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低格逻辑卷
[root@localhost ~]# mkfs.xfs /dev/My_vg1/My_lv1 -f
meta-data=/dev/My_vg1/My_lv1 isize=512 agcount=4, agsize=262144
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=10485760, imaxpct
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=5120, version=2
= sectsz=512 sunit=0 blks, lazy-count
realtime =none extsz=4096 blocks=0, rtextents=0
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创建挂载点
[root@localhost ~]# mkdir /My_lv1
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下边来配置c盘配额
先介绍一下配置c盘配额的步骤:
以支持配额功能的形式挂载文件系统编辑用户和组帐户的配额设置验证c盘配额功能查看c盘配额使用情况
[root@localhost ~]# yum -y install xfsprogs &> /dev/null //需要安装xfsprogs和quota软件包,CentOS7集成了quota软件包
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用vim编辑/etc/fstab文件linux解压rar,添加下边的配置来完成手动挂载和更改挂载权限
/dev/My_vg1/My_lv1 /My_lv1 xfs defaults,usrquota,grpquota 0 0
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以支持配额功能的形式挂载
[root@localhost ~]# mount -o usrquota,grpquota /dev/My_vg1/My_lv1 /My_lv1/ //或者mount -a,因为已经在/etc/fstab做过配置了
[root@localhost ~]# df -Th | grep /My_lv1 //注意不要grep /My_lv1/
/dev/mapper/My_vg1-My_lv1 xfs 40G 33M 40G 1% /My_lv1
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编辑用户和组帐号的配额设置
方式:软限制、硬限制
模式:容量、文件数目
容量软:bsoft容量硬:bhard
数目软:isoft数目硬:ihard
[root@localhost ~]# xfs_quota -x -c 'limit -u bsoft=10G bhard=15G isoft=100 ihard=150 amy' /My_lv1/ //硬限制容量15G,文件数量150个,软限制容量10G,文件数量100个,对amy用户进行配额
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查看配额使用情况
[root@localhost ~]# xfs_quota -c 'quota -iuv amy' /My_lv1/
Disk quotas for User amy (1000)
Filesystem Files Quota Limit Warn/Time Mounted on
/dev/mapper/My_vg1-My_lv1
0 100 150 00 [--------] /My_lv1
[root@localhost ~]# xfs_quota -x -c 'report -a' /My_lv1
User quota on /My_lv1 (/dev/mapper/My_vg1-My_lv1)
Blocks
User ID Used Soft Hard Warn/Grace
---------- --------------------------------------------------
root 0 0 0 00 [--------]
amy 0 10485760 15728640 00 [--------]
Group quota on /My_lv1 (/dev/mapper/My_vg1-My_lv1)
Blocks
Group ID Used Soft Hard Warn/Grace
---------- --------------------------------------------------
root 0 0 0 00 [--------]
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由于/My_lv1是root用户创建的,我们来看下这个文件夹的权限
[root@localhost ~]# ls -l / | grep My_lv1
drwxr-xr-x. 2 root root 6 Nov 2 01:41 My_lv1
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可知linux计划任务,amy用户没有权限写入磁盘配额 linux,下边我们来更改权限
[root@localhost ~]# chmod 777 /My_lv1
[root@localhost ~]# ls -l / | grep My_lv1
drwxrwxrwx. 2 root root 6 Nov 2 01:41 My_lv1
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切换到amy用户进行验证
[root@localhost ~]# su amy
[amy@localhost root]$ cd
[amy@localhost ~]$ pwd
/home/amy
[amy@localhost ~]$ dd if=/dev/zero of=/My_lv1/demo01.txt bs=1M count=7070+0 records in
70+0 records out
73400320 bytes (73 MB) copied, 0.405906 s, 181 MB/s
[amy@localhost ~]$ ls /My_lv1/
demo01.txt
[amy@localhost ~]$ touch /My_lv1/test{1..150} //超过最大文件数量
touch: cannot touch ‘/My_lv1/test150’: Disk quota exceeded
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看现象可知,amy用户不能创建150个以上的文件,配额配置完成