Linux6
作者：互联网
1．为主机增加80G SCSI 接口硬盘
[root@localhost ~]# fdisk -l /dev/sdd
磁盘 /dev/sdd：85.9 GB, 85899345920 字节，167772160 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
2．划分三个各20G的主分区
[root@localhost ~]# fdisk -l /dev/sdd
磁盘 /dev/sdd：85.9 GB, 85899345920 字节，167772160 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘标签类型：dos
磁盘标识符：0x7c41f75b 设备 Boot Start End Blocks Id System
/dev/sdd1 2048 41945087 20971520 83 Linux
/dev/sdd2 41945088 83888127 20971520 83 Linux
/dev/sdd3 83888128 125831167 20971520 83 Linux
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/sdd[123]
Physical volume "/dev/sdd1" successfully created.
Physical volume "/dev/sdd2" successfully created.
Physical volume "/dev/sdd3" successfully created.
[root@localhost ~]# pvscan
PV /dev/sda2 VG centos lvm2 [<39.00 GiB / 4.00 MiB free]
PV /dev/sdd1 lvm2 [20.00 GiB]
PV /dev/sdd2 lvm2 [20.00 GiB]
PV /dev/sdd3 lvm2 [20.00 GiB]
Total: 4 [<99.00 GiB] / in use: 1 [<39.00 GiB] / in no VG: 3 [60.00 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/sdd[12]
Volume group "myvg" successfully created
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 ~]# mkdir /data
[root@localhost ~]# mount /dev/myvg/mylv /data/
[root@localhost ~]# cd /data/
[root@localhost data]# echo "myshiluojijuan" > test1.txt
[root@localhost data]# ls -a
. .. test1.txt
7．增大逻辑卷到35G
[root@localhost ~]# lvextend -L 35G /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 ~]# lvdisplay
--- Logical volume ---
LV Path /dev/myvg/mylv
LV Name mylv
VG Name myvg
LV UUID 2eyyFz-kYdm-ncle-3QMF-o9Il-w2bz-ImffYJ
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2019-08-02 15:23:19 +0800
LV Status available
# open 1
LV Size 35.00 GiB
Current LE 8960
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:2
8．编辑/etc/fstab文件挂载逻辑卷，并支持磁盘配额选项
[root@localhost ~]# vi /etc/fstab
/dev/myvg/mylv /data xfs defaults 0 0
9．创建磁盘配额，crushlinux用户在/data目录下文件大小软限制为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。 10．使用touch dd 命令在/data目录下测试 11．查看配额的使用情况：用户角度 12．查看配额的使用情况：文件系统角度
[root@localhost ~]# fdisk -l /dev/sdd
磁盘 /dev/sdd：85.9 GB, 85899345920 字节，167772160 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
2．划分三个各20G的主分区
[root@localhost ~]# fdisk -l /dev/sdd
磁盘 /dev/sdd：85.9 GB, 85899345920 字节，167772160 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘标签类型：dos
磁盘标识符：0x7c41f75b 设备 Boot Start End Blocks Id System
/dev/sdd1 2048 41945087 20971520 83 Linux
/dev/sdd2 41945088 83888127 20971520 83 Linux
/dev/sdd3 83888128 125831167 20971520 83 Linux
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/sdd[123]
Physical volume "/dev/sdd1" successfully created.
Physical volume "/dev/sdd2" successfully created.
Physical volume "/dev/sdd3" successfully created.
[root@localhost ~]# pvscan
PV /dev/sda2 VG centos lvm2 [<39.00 GiB / 4.00 MiB free]
PV /dev/sdd1 lvm2 [20.00 GiB]
PV /dev/sdd2 lvm2 [20.00 GiB]
PV /dev/sdd3 lvm2 [20.00 GiB]
Total: 4 [<99.00 GiB] / in use: 1 [<39.00 GiB] / in no VG: 3 [60.00 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/sdd[12]
Volume group "myvg" successfully created
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 ~]# mkdir /data
[root@localhost ~]# mount /dev/myvg/mylv /data/
[root@localhost ~]# cd /data/
[root@localhost data]# echo "myshiluojijuan" > test1.txt
[root@localhost data]# ls -a
. .. test1.txt
7．增大逻辑卷到35G
[root@localhost ~]# lvextend -L 35G /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 ~]# lvdisplay
--- Logical volume ---
LV Path /dev/myvg/mylv
LV Name mylv
VG Name myvg
LV UUID 2eyyFz-kYdm-ncle-3QMF-o9Il-w2bz-ImffYJ
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2019-08-02 15:23:19 +0800
LV Status available
# open 1
LV Size 35.00 GiB
Current LE 8960
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:2
8．编辑/etc/fstab文件挂载逻辑卷，并支持磁盘配额选项
[root@localhost ~]# vi /etc/fstab
/dev/myvg/mylv /data xfs defaults 0 0
9．创建磁盘配额，crushlinux用户在/data目录下文件大小软限制为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。 10．使用touch dd 命令在/data目录下测试 11．查看配额的使用情况：用户角度 12．查看配额的使用情况：文件系统角度
标签：Linux6,myvg,dev,mylv,512,root,localhost 来源： https://www.cnblogs.com/elin989898/p/11289065.html