1．为主机增加80G SCSI 接口硬盘
2．划分三个各20G的主分区
[root@localhost ~]# parted /dev/sdb
(parted) mklabel
新的磁盘标签类型？ gpt
(parted) mkpart
分区名称？ []? sdb1
文件系统类型？ [ext2]? ext4
起始点？ 1G
结束点？ 20G
(parted) mkpart
分区名称？ []? sdb2
文件系统类型？ [ext2]? ext4
起始点？ 21G
结束点？ 40G
(parted) mkpart
分区名称？ []? sdb3
文件系统类型？ [ext2]? ext4
起始点？ 41G
结束点？ 60G
(parted) p
Model: VMware, VMware Virtual S (scsi)
Disk /dev/sdb: 85.9GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name 标志
1 1000MB 20.0GB 19.0GB sdb1
2 21.0GB 40.0GB 19.0GB sdb2
3 41.0GB 60.0GB 19.0GB sdb3
(parted) q
信息: You may need to update /etc/fstab.
3．将三个主分区转换为物理卷（pvcreate），扫描系统中的物理卷
[root@localhost ~]# pvcreate /dev/sdb[123]
Physical volume "/dev/sdb1" successfully created.
Physical volume "/dev/sdb2" successfully created.
Physical volume "/dev/sdb3" successfully created.
[root@localhost ~]# pvscan
PV /dev/sda2 VG centos lvm2 [<39.00 GiB / 4.00 MiB free]
PV /dev/sdb2 lvm2 [<17.70 GiB]
PV /dev/sdb1 lvm2 [17.69 GiB]
PV /dev/sdb3 lvm2 [17.69 GiB]
Total: 4 [92.08 GiB] / in use: 1 [<39.00 GiB] / in no VG: 3 [53.08 GiB]
4．使用两个物理卷创建卷组，名字为myvg，查看卷组大小
[root@localhost ~]# vgcreate myvg /dev/sdb[12]
Volume group "myvg" successfully created
[root@localhost ~]# vgdisplay myvg
--- Volume group ---
VG Name myvg
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 1
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 2
Act PV 2
VG Size 35.38 GiB
PE Size 4.00 MiB
Total PE 9058
Alloc PE / Size 0 / 0
Free PE / Size 9058 / 35.38 GiB
VG UUID lqeazi-gvko-Du1i-y0NA-91ci-7824-maQyXe
5．创建逻辑卷mylv，大小为30G
[root@localhost ~]# lvcreate -L 30G -n mylv myvg
Logical volume "mylv" created.
6．将逻辑卷格式化成xfs文件系统，并挂载到/data目录上，创建文件测试
[root@localhost ~]# mkfs.xfs /dev/myvg/mylv
meta-data=/dev/myvg/mylv isize=512 agcount=4, agsize=1966080 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=7864320, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=3840, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
[root@localhost ~]# df -Th
文件系统 类型 容量 已用 可用 已用% 挂载点
/dev/mapper/centos-root xfs 37G 3.9G 33G 11% /
devtmpfs devtmpfs 1.2G 0 1.2G 0% /dev
tmpfs tmpfs 1.2G 0 1.2G 0% /dev/shm
tmpfs tmpfs 1.2G 11M 1.2G 1% /run
tmpfs tmpfs 1.2G 0 1.2G 0% /sys/fs/cgroup
/dev/sda1 xfs 1014M 166M 849M 17% /boot
tmpfs tmpfs 245M 24K 245M 1% /run/user/0
/dev/sr0 iso9660 4.3G 4.3G 0 100% /run/media/root/CentOS 7 x86_64
/dev/mapper/myvg-mylv xfs 30G 33M 30G 1% /data
7．增大逻辑卷到35G
[root@localhost ~]# lvextend -L +5G /dev/myvg/mylv
Size of logical volume myvg/mylv changed from 30.00 GiB (7680 extents) to 35.00 GiB (8960 extents).
Logical volume myvg/mylv successfully resized.
[root@localhost ~]# xfs_growfs /dev/myvg/mylv
meta-data=/dev/mapper/myvg-mylv isize=512 agcount=4, agsize=1966080 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=7864320, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=3840, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 7864320 to 9175040
[root@localhost ~]# df -Th
文件系统 类型 容量 已用 可用 已用% 挂载点
/dev/mapper/centos-root xfs 37G 3.9G 33G 11% /
devtmpfs devtmpfs 1.2G 0 1.2G 0% /dev
tmpfs tmpfs 1.2G 0 1.2G 0% /dev/shm
tmpfs tmpfs 1.2G 11M 1.2G 1% /run
tmpfs tmpfs 1.2G 0 1.2G 0% /sys/fs/cgroup
/dev/sda1 xfs 1014M 166M 849M 17% /boot
tmpfs tmpfs 245M 24K 245M 1% /run/user/0
/dev/sr0 iso9660 4.3G 4.3G 0 100% /run/media/root/CentOS 7 x86_64
/dev/mapper/myvg-mylv xfs 35G 33M 35G 1% /data
8．编辑/etc/fstab文件挂载逻辑卷，并支持磁盘配额选项
[root@localhost ~]# vim /etc/fstab
/dev/myvg/mylv /data xfs defaults,usrquota,grpquota 0 0
9．创建磁盘配额，crushlinux用户在/data目录下文件小软限制为80M，硬限制为100M，
crushlinux用户在/data目录下文件数量软限制为80个，硬限制为100个。
[root@localhost ~]# mount -o remount,usrquota,grpquota /data1
/dev/sdb3 /data1 ext4 defaults,usrquota,grpquota 0 0
[root@localhost ~]# mount |grep /data1
/dev/sdb3 on /data1 type ext4 (rw,relatime,seclabel,quota,usrquota,grpquota,data=ordered)
[root@localhost ~]# quotacheck -avug
quotacheck: Skipping /dev/mapper/myvg-mylv [/data]
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/sdb3 [/data1] done
quotacheck: Cannot stat old user quota file /data1/aquota.user: 没有那个文件或目录. Usage will not be subtracted.
quotacheck: Cannot stat old group quota file /data1/aquota.group: 没有那个文件或目录. Usage will not be subtracted.
quotacheck: Cannot stat old user quota file /data1/aquota.user: 没有那个文件或目录. Usage will not be subtracted.
quotacheck: Cannot stat old group quota file /data1/aquota.group: 没有那个文件或目录. Usage will not be subtracted.
quotacheck: Checked 3 directories and 0 files
quotacheck: Old file not found.
quotacheck: Old file not found.
[root@localhost ~]# ll /data1/a*
-rw-------. 1 root root 6144 8月 2 09:48 /data1/aquota.group
-rw-------. 1 root root 6144 8月 2 09:48 /data1/aquota.user
[root@localhost ~]# quotaon -auvg
/dev/sdb3 [/data1]: group quotas turned on
/dev/sdb3 [/data1]: user quotas turned on
[root@localhost ~]# edquota -u crushlinux
Disk quotas for user crushlinux (uid 1001):
Filesystem blocks soft hard inodes soft hard
/dev/mapper/myvg-mylv 0 0 0 0 0 0
/dev/sdb3 0 8000 10000 0 80 100
~
10．使用touch dd 命令在/data目录下测试
crushlinux@localhost home]$ dd if=/dev/zero of=/data1/ceshi bs=1M count=90
sdb3: warning, user block quota exceeded.
sdb3: write failed, user block limit reached.
dd: 写入"/data1/ceshi" 出错: 超出磁盘限额
记录了10+0 的读入
记录了9+0 的写出
10240000字节(10 MB)已复制，0.177268 秒，57.8 MB/秒
[crushlinux@localhost home]$ touch /data1/{1..85}.txt
sdb3: warning, user file quota exceeded.
11．查看配额的使用情况：用户角度
[root@localhost home]# quota -uvs crushlinux
Disk quotas for user crushlinux (uid 1001):
Filesystem space quota limit grace files quota limit grace
/dev/mapper/myvg-mylv
0K 0K 0K 0 0 0
/dev/sdb3 10000K* 8000K 10000K 6days 86* 80 100 6days
12．查看配额的使用情况：文件系统角度
[root@localhost home]# repquota -auvs
*** Report for user quotas on device /dev/mapper/myvg-mylv
Block grace time: 7days; Inode grace time: 7days
Space limits File limits
User used soft hard grace used soft hard grace
----------------------------------------------------------------------
root -- 92160K 0K 0K 4 0 0
*** Status for user quotas on device /dev/mapper/myvg-mylv
Accounting: ON; Enforcement: ON
Inode: #67 (2 blocks, 2 extents)
*** Report for user quotas on device /dev/sdb3
Block grace time: 7days; Inode grace time: 7days
Space limits File limits
User used soft hard grace used soft hard grace
----------------------------------------------------------------------
root -- 20K 0K 0K 2 0 0
crushlinux ++ 10000K 8000K 10000K 6days 86 80 100 6days
Statistics:
Total blocks: 7
Data blocks: 1
Entries: 2
Used average: 2.000000