在 Linux 系统中，由于是多人多任务的环境，所以会有多人共同使用一个硬盘空间的情况发生，为了合理使用这些空间，管理员需要控制用户对磁盘空间的使用，这个就是Linux 下的配额管理。

配额管理是对某个磁盘分区进行限制。这里的限制包括2个方面：

1.单个用户对某个目录下空间大小的限制。

2.单个用户对某个目录下文件个数的限制。

1)  针对 WWW server ，例如：每个人的网页空间的容量限制。

2)  针对 mail server，例如：每个人的邮件空间限制。

3)  针对 file server，例如：每个人最大的可用网络硬盘空间。

（1）仅针对整个 partition：

quota针对『整个 partition』进行限制， 例如：如果/dev/hda5 是挂载在 /dave 目录下，那么在 /dave 目录下的所有目录都会受到限制。

（2）只对一般身份使用者有效：

不是所有在 Linux 上面的账号都可以设定 quota，例如 root 就不能设定quota 。

（1）soft limit：

这是最低限制容量的意思，用户在宽限期间之内，他的容量可以超过 soft ，但必需要宽限时间之内将磁盘容量降低到 soft 的容量限制之下。

（2）hard limit：

这是『绝对不能超过』的容量。通常hard limit 会比 soft limit 为高，例如网络驱动器空间为 30 MB ，那么 hard limit 就设定为 30MB ，但是为了让使用者有一定的警戒心，所以当使用空间超过 25 MB 时，例如使用者使用了 27 MB 的空间时，那么系统就会警告用户， 让使用者可以在『宽限时间内』将他的档案量降低至 25 MB ( 亦即是 soft limit )之内。也就是说， soft 到 hard 之间的容量其实就是宽限的容量，可以达到针对使用者的『警示』作用。

（3）宽限时间：

宽限时间就是当使用者使用的空间超过了 soft limit ，却还没有到达 hard limit 时，那么在这个『宽限时间』之内，就必需要请用户将使用的磁盘容量降低到 soft limit 之下。而当用户将磁盘容量使用情况超过 soft limit 时，『宽限时间』就会自动被启动，而在用户将容量降低到 softlimit 之下，那么宽限时间就会自动的取消。

    Quota也需要安装，安装包如下：

[root@rhce /]# rpm -q quota

quota-3.17-16.el6.x86_64

[root@rhce /]#

与Quota 相关的几个命令如下。

[root@rhce /]# quotaon

Bad number of arguments.

quotaon: Usage:

       quotaon [-guvp] [-F quotaformat] [-x state] -a

       quotaon [-guvp] [-F quotaformat] [-x state] filesys ...

-a, --all                turn quotas on for all filesystems

-f, --off                turn quotas off

-u, --user               operate on user quotas

-g, --group              operate on group quotas

-p, --print-state        print whether quotas are on or off

-x, --xfs-command=cmd    perform XFS quota command

-F, --format=formatname  operate on specific quota format

-v, --verbose            print more messages

-h, --help               display this help text and exit

-V, --version            display version information andexit

[root@rhce /]#

[root@rhce /]# quotaoff

Bad number of arguments.

quotaoff: Usage:

       quotaoff [-guvp] [-F quotaformat] [-x state] -a

       quotaoff [-guvp] [-F quotaformat] [-x state] filesys ...

-a, --all                turn quotas off for allfilesystems

-f, --off                turn quotas off

-u, --user               operate on user quotas

-g, --group              operate on group quotas

-p, --print-state        print whether quotas are on or off

-x, --xfs-command=cmd    perform XFS quota command

-F, --format=formatname  operate on specific quota format

-v, --verbose            print more messages

-h, --help               display this help text and exit

-V, --version            display version information andexit

[root@rhce /]# warnquota -h

warnquota: Usage:

 warnquota [-ugsid] [-F quotaformat] [-c configfile] [-q quotatabfile][-a adminsfile]

-u, --user                      warn users

-g, --group                     warn groups

-s, --human-readable            send information in more humanfriendly units

-i, --no-autofs                 avoid autofs mountpoints

-d, --no-details                do not send quota informationitself

-F, --format=formatname         use quotafiles of specific format

-c, --config=config-file        non-default config file

-q, --quota-tab=quotatab-file   non-default quotatab

-a, --admins-file=admins-file   non-default admins file

-h, --help                      display this help messageand exit

-v, --version                   display version informationand exit

Bugs to jack@suse.cz

[root@rhce /]#

[root@rhce /]# edquota

edquota: Usage:

       edquota [-rm] [-u] [-F formatname] [-p username] [-f filesystem]username ...

        edquota [-rm] -g [-F formatname] [-pgroupname] [-f filesystem] groupname ...

       edquota [-rm] [-u|g] [-F formatname] [-f filesystem] -t

       edquota [-rm] [-u|g] [-F formatname] [-f filesystem] -Tusername|groupname ...

-u, --user                    edit user data

-g, --group                   edit group data

-r, --remote                  edit remote quota (via RPC)

-m, --no-mixed-pathnames      trim leading slashes from NFSv4mountpoints

-F, --format=formatname       edit quotas of a specific format

-p, --prototype=name          copy data from a prototype user/group

   --always-resolve          alwaystry to resolve name, even if it is

                              composed only ofdigits

-f, --filesystem=filesystem   edit data only on a specific filesystem

-t, --edit-period             edit grace period

-T, --edit-times              edit grace time of a user/group

-h, --help                    display this help text andexit

-V, --version                 display version informationand exit

Bugs to: jack@suse.cz

[root@rhce /]#

[root@rhce /]# repquota -h

repquota: Utility for reporting quotas.

Usage:

repquota [-vugsi] [-c|C] [-t|n] [-Fquotaformat] (-a | mntpoint)

-v, --verbose               display also users/groups withoutany usage

-u, --user                  display information aboutusers

-g, --group                 display information aboutgroups

-s, --human-readable        show numbers in human friendly units(MB, GB, ...)

-t, --truncate-names        truncate names to 8 characters

-p, --raw-grace             print grace time in seconds sinceepoch

-n, --no-names              do not translate uid/gid to name

-i, --no-autofs             avoid autofs mountpoints

-c, --batch-translation     translate big number of ids at once

-C, --no-batch-translation  translate ids one by one

-F, --format=formatname     report information for specific format

-h, --help                  display this help message andexit

-V, --version               display version information andexit

Bugs to jack@suse.cz

[root@rhce /]#

＃quotacheck –cvug/tmp

[root@rhce ~]# quotacheck -h

Utility for checking and repairing quotafiles.

quotacheck [-gucbfinvdmMR] [-F<quota-format>] filesystem|-a

-u, --user                check user files

-g, --group               check group files

-c, --create-files        create new quota files

-b, --backup              create backups of old quota files

-f, --force               force check even if quotas areenabled

-i, --interactive         interactive mode

-n, --use-first-dquot     use the first copy of duplicated structure

-v, --verbose             print more information

-d, --debug               print even more messages

-m, --no-remount          do not remount filesystem read-only

-M, --try-remount         try remounting filesystem read-only,

                          continue even if itfails

-R, --exclude-root        exclude root when checking allfilesystems

-F, --format=formatname   check quota files of specific format

-a, --all                 check all filesystems

-h, --help                display this message and exit

-V, --version             display version information andexit

Bugs to jack@suse.cz

[root@rhce ~]#

[root@rhce ~]#  quotacheck -cvug /dave

quotacheck: Your kernel probably supportsjournaled quota but you are not using it. Consider switching to journaled quotato avoid running quotacheck after an unclean shutdown.

quotacheck: Scanning /dev/sdc1 [/dave] done

quotacheck: Cannot stat old user quotafile: No such file or directory

quotacheck: Cannot stat old group quotafile: No such file or directory

quotacheck: Cannot stat old user quotafile: No such file or directory

quotacheck: Cannot stat old group quota file:No such file or directory

quotacheck: Checked 3 directories and 2files

quotacheck: Old file not found.

[root@rhce ~]# setquota -h

setquota: Usage:

 setquota [-u|-g] [-rm] [-F quotaformat] <user|group>

       <block-softlimit> <block-hardlimit> <inode-softlimit><inode-hardlimit> -a|<filesystem>...

 setquota [-u|-g] [-rm] [-F quotaformat] <-p protouser|protogroup><user|group> -a|<filesystem>...

 setquota [-u|-g] [-rm] [-F quotaformat] -b [-c] -a|<filesystem>...

 setquota [-u|-g] [-F quotaformat] -t <blockgrace><inodegrace> -a|<filesystem>...

 setquota [-u|-g] [-F quotaformat] <user|group> -T<blockgrace> <inodegrace> -a|<filesystem>...

-u, --user                 set limits for user

-g, --group                set limits for group

-a, --all                  set limits for allfilesystems

   --always-resolve       always tryto resolve name, even if is

                           composed only ofdigits

-F, --format=formatname    operate on specific quota format

-p, --prototype=protoname  copy limits from user/group

-b, --batch                read limits from standard input

-c, --continue-batch       continue in input processing in case ofan error

-r, --remote               set remote quota (via RPC)

-m, --no-mixed-pathnames      trim leading slashes from NFSv4mountpoints

-t, --edit-period          edit grace period

-T, --edit-times           edit grace times for user/group

-h, --help                 display this help text andexit

-V, --version              display version information andexit

Bugs to: jack@suse.cz

[root@rhce ~]#

[root@rhce /]# fdisk /dev/sdc

Device contains neither a valid DOSpartition table, nor Sun, SGI or OSF disklabel

Building a new DOS disklabel with diskidentifier 0x1e051117.

Changes will remain in memory only, untilyou decide to write them.

After that, of course, the previous contentwon't be recoverable.

Warning: invalid flag 0x0000 of partitiontable 4 will be corrected by w(rite)

WARNING: DOS-compatible mode is deprecated.It's strongly recommended to

        switch off the mode (command 'c') and change display units to

        sectors (command 'u').

Command (m for help): n

Command action

  e   extended

  p   primary partition (1-4)

p

Partition number (1-4): 1

First cylinder (1-652, default 1):

Using default value 1

Last cylinder, +cylinders or +size{K,M,G}(1-652, default 652):

Using default value 652

Command (m for help): w

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

[root@rhce /]# fdisk -l

Disk /dev/sdc: 5368 MB, 5368709120 bytes

255 heads, 63 sectors/track, 652 cylinders

Units = cylinders of 16065 * 512 = 8225280bytes

Sector size (logical/physical): 512 bytes /512 bytes

I/O size (minimum/optimal): 512 bytes / 512bytes

Disk identifier: 0x1e051117

  Device Boot      Start         End      Blocks  Id  System

/dev/sdc1               1         652    5237158+  83  Linux

[root@rhce /]# mkfs -t ext3 /dev/sdc1

mke2fs 1.41.12 (17-May-2010)

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

Stride=0 blocks, Stripe width=0 blocks

327680 inodes, 1309289 blocks

65464 blocks (5.00%) reserved for the superuser

First data block=0

Maximum filesystem blocks=1342177280

40 block groups

32768 blocks per group, 32768 fragments pergroup

8192 inodes per group

Superblock backups stored on blocks:

       32768, 98304, 163840, 229376, 294912, 819200, 884736

Writing inode tables: done                            

Creating journal (32768 blocks): done

Writing superblocks and filesystemaccounting information: done

This filesystem will be automaticallychecked every 30 mounts or

180 days, whichever comes first.  Use tune2fs -c or -i to override.

[root@rhce /]#

[root@rhce /]# mount/dev/sdc1 /dave

[root@rhce /]# vim /etc/fstab

/dev/sdc1         /dave           ext3                      defaults        0 0

我们这里将/dev/sdc1 映射到了目录/dave.

[root@rhce /]# groupadd grp01

[root@rhce /]# groupadd grp02

[root@rhce /]# cat /etc/group|grep grp0*

grp01:x:503:

grp02:x:504:

[root@rhce /]#

[root@rhce /]# useradd dave01 -g grp01

[root@rhce /]# useradd dave02 -g grp02

[root@rhce /]# passwd dave01

Changing password for user dave01.

New password:

BAD PASSWORD: it is too short

BAD PASSWORD: is too simple

Retype new password:

passwd: all authentication tokens updatedsuccessfully.

[root@rhce /]# passwd dave02

Changing password for user dave02.

New password:

BAD PASSWORD: it is too short

BAD PASSWORD: is too simple

Retype new password:

passwd: all authentication tokens updatedsuccessfully.

[root@rhce /]#

[root@rhce ~]# cat /etc/fstab                                                                

tmpfs                   /dev/shm                tmpfs   defaults        0 0                  

devpts                  /dev/pts                devpts  gid=5,mode=620  0 0                  

sysfs                   /sys                    sysfs   defaults        0 0                  

proc                    /proc                   proc    defaults        0 0                  

/dev/sdc1               /dave                   ext3    defaults,usrquota,grpquot        0 0

[root@rhce ~]#                                                                               

/etc/fstab 文件的第四个字段是装载文件系统是使用的选项：

（1）实现基于用户的磁盘配额，就加入usrquota关键字，

（2）实现基于组的磁盘配额，就加入grpqouta关键字，如果两者都需要，就全写入，中间可以用逗号分隔。

注意：请特别注意这里的拼写，是usrquota和grpquota，不要写成userquota和groupquota。

[root@rhce ~]# mount

/dev/sda3 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 typebinfmt_misc (rw)

none on /sys/kernel/config type configfs(rw)

sunrpc on /var/lib/nfs/rpc_pipefs typerpc_pipefs (rw)

gvfs-fuse-daemon on /root/.gvfs typefuse.gvfs-fuse-daemon (rw,nosuid,nodev)

/dev/sdc1 on /dave typeext3 (rw)

分区是我们之前mount的，我们后来修改了mount的选项，增加了用户和组的配额，所以这里我们重新mount一次，使我们的修改生效。

[root@rhce ~]# mount -oremount /dave

[root@rhce ~]# mount

/dev/sda3 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 typebinfmt_misc (rw)

none on /sys/kernel/config type configfs(rw)

sunrpc on /var/lib/nfs/rpc_pipefs typerpc_pipefs (rw)

gvfs-fuse-daemon on /root/.gvfs typefuse.gvfs-fuse-daemon (rw,nosuid,nodev)

/dev/sdc1 on /dave typeext3 (rw,usrquota,grpquota)

[root@rhce ~]#

--检查配额文件

[root@rhce ~]# quotacheck/dave

quotacheck: Cannot create new quotafile/dave/aquota.user.new: Permission denied

quotacheck: Cannot initialize IO on newquotafile: Permission denied

这里关闭SELinux即可：

[root@rhce ~]# getenforce

Enforcing

[root@rhce ~]# setenforce 0

[root@rhce ~]# getenforce

Permissive

[root@rhce ~]#

--启动配额限制

[root@rhce ~]# quotaon -vug /dave

/dev/sdc1 [/dave]: group quotas turned on

/dev/sdc1 [/dave]: user quotas turned on

[root@rhce ~]#

--开启之后，会在/dave的目录下自动创建配额的管理文件：aquota.group和aquota.user

[root@rhce dave]# pwd

/dave

[root@rhce dave]# ll

total 32

-rw-------. 1 root root  6144 Jun 22 09:28 aquota.group

-rw-------. 1 root root  6144 Jun 22 09:28 aquota.user

drwx------. 2 root root 16384 Jun 22 05:00lost+found

[root@rhce dave]#

这个文件我们不能直接编辑，我们需要使用edquota命令来进行编辑。

[root@rhce dave]# edquota -u dave01

Disk quotas for user dave01 (uid 503):

 Filesystem                  blocks       soft       hard     inodes    soft     hard

 /dev/sdc1                        0      10240      20480          0        0       0

这里的限制分三种：

1.blocks：按block的数量

2.soft：软限制，单位为字节。

3.hard: 硬限制，单位为字节。

上例中，soft限制约为10MB，hard限制约为20MB，当用户dave01使用空间超过10MB时，系统会进行提示，但可以继续使用空间，而当用户dave01使用空间达到20MB时，就会限制用户dave01继续使用/dave空间。

--查看报告：

[root@rhce dave]# repquota /dave

*** Report for user quotas on device/dev/sdc1

Block grace time: 7days;Inode grace time: 7days

                        Block limits                File limits

User            used    soft   hard  grace    used soft  hard  grace

----------------------------------------------------------------------

root     --  141436       0      0              4     0    0      

--这里只有root用户的信息，因为其他用户还没有创建文件，一旦创建文件，就会限制了。

[root@rhce dave]#

--用dave01用户创建文件进行配额限制的测试

--创建5M的文件：成功

[dave01@rhce ~]$ dd if=/dev/zeroof=/dave/tf01 bs=1M count=5

5+0 records in

5+0 records out

5242880 bytes (5.2 MB) copied, 0.0445553 s,118 MB/s

--创建10M的文件，超过soft 的配额限制，有警告：

[dave01@rhce ~]$ dd if=/dev/zeroof=/dave/tf01 bs=1M count=10

sdc1: warning, user blockquota exceeded.

10+0 records in

10+0 records out

10485760 bytes (10 MB) copied, 0.0232663 s,451 MB/s

--在创建10M的文件，超过20M的配额限制，文件创建失败：

[dave01@rhce ~]$ dd if=/dev/zeroof=/dave/tf02 bs=1M count=10

sdc1: write failed, userblock limit reached.

dd: writing `/dave/tf02':Disk quota exceeded

10+0 records in

9+0 records out

10448896 bytes (10 MB) copied, 0.049051 s,213 MB/s

[dave01@rhce ~]$

--查看报告：

[root@rhce dave]# repquota /dave

*** Report for user quotas on device/dev/sdc1

Block grace time: 7days;Inode grace time: 7days

                        Block limits                File limits

User            used    soft   hard  grace    used soft  hard  grace

----------------------------------------------------------------------

root     --  141432       0      0              3     0    0      

dave01    +-  20480   10240   20480 6days       3     0    0      

这里就显示了dave01这个用户的相关限制。我们这里的宽限时间变成了6days。

配额的限制，除了在磁盘大小上的限制，还可以在文件个数上进行限制。我们这里用dave02这个进行示例。

[root@rhce dave]# edquota -u dave02

Disk quotas for user dave02 (uid 504):

 Filesystem                  blocks       soft       hard    inodes     soft     hard

 /dev/sdc1                        0          0          0         0       20      30

soft和hard同上是软限制和硬限制，分别是20、30，当用户dave02创建文件超过20个时，系统会进行提示，但仍可以继续创建文件，而当用户dave02创建文件超过30个文件时，就会限制用户dave02继续创建文件。

注意：因为用户dave02是在/dave目录下进行了磁盘配额限制，所以/dave目录会算做一个文件，所以dave02最多只能创建29个文件。

[root@rhce ~]# chown dave02.grp02 /dave

--用脚本手动创建文件：

[dave02@rhce ~]$ cd /dave

[dave02@rhce dave]$ ls

aquota.group  aquota.user lost+found  tf01  tf02

[dave02@rhce dave]$

[dave02@rhce dave]$ for i in $(seq 1 22);

> do echo “dave02file$i”;

> touch dave02file$i;

> done

“dave02file1”

“dave02file2”

“dave02file3”

“dave02file4”

“dave02file5”

“dave02file6”

“dave02file7”

“dave02file8”

“dave02file9”

“dave02file10”

“dave02file11”

“dave02file12”

“dave02file13”

“dave02file14”

“dave02file15”

“dave02file16”

“dave02file17”

“dave02file18”

“dave02file19”

“dave02file20”

sdc1: warning, user filequota exceeded.

“dave02file21”

“dave02file22”

[dave02@rhce dave]$

到20就提示配额限制了。

--继续用脚本创建文件：

[dave02@rhce dave]$ for i in $(seq 23 33);

> do echo “dave02file$i”;

> touch dave02file$i;

> done

“dave02file23”

“dave02file24”

“dave02file25”

“dave02file26”

“dave02file27”

“dave02file28”

“dave02file29”

“dave02file30”

sdc1: write failed, userfile limit reached.

touch: cannot touch`dave02file30': Disk quota exceeded

“dave02file31”

touch: cannot touch `dave02file31': Diskquota exceeded

“dave02file32”

touch: cannot touch `dave02file32': Diskquota exceeded

“dave02file33”

touch: cannot touch `dave02file33': Diskquota exceeded

[dave02@rhce dave]$

这里我们最多只能创建29个文件。

--限制报告：

[root@rhce ~]# repquota /dave

*** Report for user quotas on device/dev/sdc1

Block grace time: 7days;Inode grace time: 7days

                        Block limits                File limits

User            used    soft   hard  grace    used soft  hard  grace

----------------------------------------------------------------------

root     --  141432       0      0              3     0    0      

dave01   +-   20476   10240  20480  6days       2    0     0      

dave02   -+       4       0      0             30    20    30 6days

通过repquota命令，可以看到block和inode的宽限时间默认都是7天。

[root@rhce ~]# repquota /dave

*** Report for user quotas on device/dev/sdc1

Block grace time: 7days;Inode grace time: 7days

这个时间，我们可以使用edquota 来修改。

[root@rhce ~]# edquota -h

edquota: Usage:

       edquota [-rm] [-u] [-F formatname] [-p username] [-f filesystem]username ...

       edquota [-rm] -g [-F formatname] [-p groupname] [-f filesystem]groupname ...

       edquota [-rm] [-u|g] [-F formatname] [-f filesystem] -t

       edquota [-rm] [-u|g] [-F formatname] [-f filesystem] -Tusername|groupname ...

-u, --user                    edit user data

-g, --group                   edit group data

-r, --remote                  edit remote quota (via RPC)

-m, --no-mixed-pathnames      trim leading slashes from NFSv4mountpoints

-F, --format=formatname       edit quotas of a specific format

-p, --prototype=name          copy data from a prototype user/group

   --always-resolve          alwaystry to resolve name, even if it is

                              composed only of digits

-f, --filesystem=filesystem   edit data only on a specific filesystem

-t, --edit-period             edit grace period

-T, --edit-times              edit grace time of a user/group

-h, --help                    display this help text andexit

-V, --version                 display version informationand exit

--修改用户dave01的宽限时间：

[root@rhce ~]# edquota-T dave01

Times to enforce softlimit for user dave01(uid 503):

Time units may be: days, hours, minutes, orseconds

 Filesystem                        block grace               inodegrace

 /dev/sdc1                         601938seconds                  unset

~

这是默认值：

[root@rhce ~]# edquota -T dave01

Times to enforce softlimit for user dave01(uid 503):

Time units may be: days,hours, minutes, or seconds

 Filesystem                        block grace               inodegrace

 /dev/sdc1                          10days                unset

我们改成10天。 上面有时间的单位。

--查看报告显示：

[root@rhce ~]# repquota /dave

*** Report for user quotas on device/dev/sdc1

Block grace time: 7days; Inode grace time:7days

                        Block limits                File limits

User            used    soft   hard  grace    used soft  hard  grace

----------------------------------------------------------------------

root     --  141432       0      0              3     0    0      

dave01   +-   20476   10240  20480 10days       2    0     0      

dave02   -+       4       0      0             30    20   30  6days

[root@rhce ~]# edquota -T dave02

Times to enforce softlimit for user dave02(uid 504):

Time units may be: days, hours, minutes, orseconds

 Filesystem                        block grace               inodegrace

 /dev/sdc1                                unset               12days

~

[root@rhce ~]# repquota/dave

*** Report for user quotas on device/dev/sdc1

Block grace time: 7days; Inode grace time:7days

                        Block limits                File limits

User            used    soft   hard  grace    used soft  hard  grace

----------------------------------------------------------------------

root     --  141432       0      0              3     0    0      

dave01   +-   20476   10240  20480  9days       2    0     0      

dave02   -+       4       0      0             30    20   30 12days

我们的dave02 用户对应的组是grp02.

-Tg 争对组

T 争对用户

--默认值：

[root@rhce ~]# edquota -Tg grp02

Times to enforce softlimit for group grp02(gid 504):

Time units may be: days,hours, minutes, or seconds

 Filesystem                        block grace               inodegrace

 /dev/sdc1                                unset                  unset

--修改：

[root@rhce ~]# edquota -Tg grp02

Times to enforce softlimit for group grp02(gid 504):

Time units may be: days, hours, minutes, orseconds

 Filesystem                        block grace               inodegrace

 /dev/sdc1                                unset                 10days

~

但是这里我们一旦保存之后，我们的修改就又还原了。

如果我们想修改组的宽限时间，就必须先设置组的soft和hard limit。 只有这2个属性设置以后，才可以设置宽限时间。

[root@rhce dave]# edquota-g grp02

Disk quotas for group grp02 (gid 504):

 Filesystem                   blocks       soft       hard    inodes     soft     hard

 /dev/sdc1                        4          0          0         30        20        30

这是完以后，就可以设置组的宽限时间了。

[root@rhce dave]# quotaoff -a

--关闭quota之后，在清空/etc/fstab 文件中有关配额的限制。

最后remount 磁盘。