CentOS 配额(Quota)说明

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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。

1.1 Quota 常用在如下几种情况

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。

1.2 Quota 的2个注意事项

(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 。

1.3 Quota 的三种限制类型

(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。

1.4 Quota 的安装包

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 /]#

1.5 Quota 相关的命令

与Quota 相关的几个命令如下。

1.5.1 启用quota:quotaon

[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 /]#

1.5.2 关闭quota:quotaoff

[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

1.5.3 配额发送警告:warnquota

[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 /]#

1.5.4 编辑配额属性:edquota

[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 /]#

1.5.5 显示配额信息:repquota

[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 /]#

1.5.6 检查并修复quota 配置文件:quotacheck

#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.

1.5.7 直接设置配额:setquota

[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 ~]#

二. 配额使用示例

2.1 创建分区并mount到目录

[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 BlocksId System

/dev/sdc1 1 6525237158+ 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.

2.2 创建2个测试用户

[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 /]#

2.3 修改分区表启用配额限制

[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。

2.4 重新Remount 分区

[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 ~]#

2.5 启动并配置文件大小配额限制

--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):

Filesystemblockssoft hardinodessoft hard

/dev/sdc1010240 204800 00

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 softhard grace usedsoft hard grace

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

root-- 141436 00 4 00

--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 softhard grace usedsoft hard grace

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

root-- 141432 00 3 00

dave01 +-20480 10240 204806days 3 00

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。

2.6 配置文件个数的配额限制

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):

Filesystemblocks soft hardinodessoft hard

/dev/sdc10 0 002030

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.userlost+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 softhard grace usedsoft hard grace

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

root-- 141432 00 3 00

dave01+- 20476 1024020480 6days 20 0

dave02-+ 4 0030 20 306days

2.7 更改宽限时间

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

2.7.1 按用户来设置宽限时间

--修改用户dave01的宽限时间:

[root@rhce ~]#edquota-Tdave01

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

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

Filesystemblock grace inodegrace

/dev/sdc1601938secondsunset

~

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

Filesystemblock grace inodegrace

/dev/sdc110daysunset

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 softhard grace usedsoft hard grace

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

root-- 141432 00 3 00

dave01+- 20476 102402048010days20 0

dave02-+ 4 00 30 2030 6days

[root@rhce ~]# edquota -T dave02

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

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

Filesystemblock grace inodegrace

/dev/sdc1unset12days

~

[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 softhard grace usedsoft hard grace

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

root-- 141432 00 3 00

dave01+- 20476 1024020480 9days 20 0

dave02-+ 4 00 30 203012days

2.7.2 按组来设置宽限时间

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

Filesystemblock grace inodegrace

/dev/sdc1unset 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

Filesystemblock grace inodegrace

/dev/sdc1unset 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 hardinodes soft hard

/dev/sdc14 0 0 30 20 30

这是完以后,就可以设置组的宽限时间了。

2.8 关闭配额

[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。