Linux用户磁盘配额设置方法

[root@localhost /]# grep CONFIG_QUOTA /boot/config-3.10.0-123.el7.x86_64
CONFIG_QUOTA=y
CONFIG_QUOTA_NETLINK_INTERFACE=y
# CONFIG_QUOTA_DEBUG is not set
CONFIG_QUOTA_TREE=y
CONFIG_QUOTACTL=y
CONFIG_QUOTACTL_COMPAT=y

[root@localhost /]# mount /dvd -o remount    
[root@localhost /]# mount
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime,seclabel)
devtmpfs on /dev type devtmpfs (rw,nosuid,seclabel,size=926912k,nr_inodes=231728,mode=755)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,seclabel)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,seclabel,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,nodev,seclabel,mode=755)
tmpfs on /sys/fs/cgroup type tmpfs (rw,nosuid,nodev,noexec,seclabel,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct,cpu)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/net_cls type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb)
configfs on /sys/kernel/config type configfs (rw,relatime)
/dev/sda3 on / type xfs (rw,relatime,seclabel,attr2,inode64,noquota)
selinuxfs on /sys/fs/selinux type selinuxfs (rw,relatime)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=32,pgrp=1,timeout=300,minproto=5,maxproto=5,direct)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,seclabel)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
mqueue on /dev/mqueue type mqueue (rw,relatime,seclabel)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)
sunrpc on /proc/fs/nfsd type nfsd (rw,relatime)
/dev/sda1 on /boot type xfs (rw,relatime,seclabel,attr2,inode64,noquota)
/dev/sdb1 on /dvd type ext2 (rw,relatime,seclabel,quota,usrquota,grpquota)
[root@localhost /]# quotacheck -avug
quotacheck: Quota for users is enabled on mountpoint /dvd so quotacheck might damage the file.
Please turn quotas off or use -f to force checking.
-a : 扫描所有在/etc/mtab中开启quota的文件系统
-v : 显示扫描过程
-u : 扫描所有user quotas  (usrquota)
-g : 扫描所有group quotas (grpquota)

[root@localhost /]# quotaon -avug
/dev/sdb1 [/dvd]: group quotas turned on
/dev/sdb1 [/dvd]: user quotas turned on
-a : 开启所有quota设定，根据/etc/mtab设定
-v : 当开启quota时显示信息

[root@localhost /]# edquota -u redhat（redhat为系统用户名称）
Disk quotas for user redhat (uid 1000):
 Filesystem          blocks    soft    hard   inodes   soft   hard
 /dev/sdb1             0       0     0      0       0    0

Disk quotas for user redhat (uid 1000):
 Filesystem          blocks    soft    hard   inodes   soft   hard
 /dev/sdb1             0     10240   20480    0     5     10

[root@localhost dvd]# edquota -t
Grace period before enforcing soft limits for users:
Time units may be: days, hours, minutes, or seconds
 Filesystem       Block grace period   Inode grace period
 /dev/sdb1           7days         7days
[root@localhost dvd]# quota -uv redhat（-u : 显示user。-v : 显示quota值)
Disk quotas for user redhat (uid 1000): 
   Filesystem blocks  quota  limit  grace  files  quota  limit  grace
   /dev/sdb1    0  10240  20480        0      5    10    

[root@localhost dvd]# edquota -p redhat aaa 
[root@localhost dvd]# quota -uv aaa
Disk quotas for user aaa (uid 1001):
   Filesystem blocks  quota  limit  grace  files  quota  limit  grace
   /dev/sdb1    0   10240  20480        0     5   10    

同时复制给多个用户：

[root@localhost dvd]#edquota -p redhat`awk -F: '$3 >499 {print $1}' /etc/passwd`

[root@localhost dvd]# repquota -a
*** Report for user quotas on device /dev/sdb1
Block grace time: 24:00; Inode grace time: 7days
            Block limits        File limits
User      used  soft  hard grace  used soft hard grace
----------------------------------------------------------------------
root   --   20     0    0            2   0   0