标签：lvm 逻辑卷管理
fdisk /dev/sd[abcd...] --> 8e --> pv --> vg --> lv
（1）、创建分区
fdisk /dev/sdb
p --> n --> p --> 1 --> 回车 --> 回车--> p --> t --> 8e --> p --> w
fdisk /dev/sdc
p --> n --> p --> 1 --> 回车 --> 回车--> p --> t --> 8e --> p --> w
fdisk /dev/sdd
p --> n --> p --> 1 --> 回车 --> 回车--> p --> t --> 8e --> p --> w
（2）、创建物理卷pv
可以通过pvscan 查看是否有物理卷及其信息
# pvcreate -v /dev/sdb1 /dev/sdc1 /dev/sdd1
Set up physical volume for "/dev/sdb1" with 817885152 available sectors
Zeroing start of device /dev/sdb1
Writing physical volume data to disk "/dev/sdb1"
Physical volume "/dev/sdb1" successfully created
Set up physical volume for "/dev/sdc1" with 775939437 available sectors
Zeroing start of device /dev/sdc1
Writing physical volume data to disk "/dev/sdc1"
Physical volume "/dev/sdc1" successfully created
Set up physical volume for "/dev/sdd1" with 461370672 available sectors
Zeroing start of device /dev/sdd1
Writing physical volume data to disk "/dev/sdd1"
Physical volume "/dev/sdd1" successfully created
（3）、创建卷组vg
-s 8M 指定PE为8M，默认为4M，只能为4M的整数倍
# vgcreate -v lvmvg /dev/sdb1 /dev/sdc1 /dev/sdd1
Wiping cache of LVM-capable devices
Adding physical volume ‘/dev/sdb1‘ to volume group ‘lvmvg‘
Adding physical volume ‘/dev/sdc1‘ to volume group ‘lvmvg‘
Adding physical volume ‘/dev/sdd1‘ to volume group ‘lvmvg‘
Archiving volume group "lvmvg" metadata (seqno 0).
Creating volume group backup "/etc/lvm/backup/lvmvg" (seqno 1).
Volume group "lvmvg" successfully created
（4）、创建逻辑卷(LVM)
lvcreate [options] -L 大小 -n 逻辑卷名 卷组名
vgdisplay 查看vg的空间有多大
# lvcreate -L 979.98G -n lvmdata lvmvg
Rounding up size to full physical extent 979.98 GiB
Logical volume "lvmdata" created
（5）、创建文件系统
# mkfs.ext4 /dev/lvmvg/lvmdata
（6）、挂载磁盘分区
mkdir /oradata
blkid /dev/lvmvg/lvmdata
vi /etc/fstab
mount -a
df -h
via:http://blog.chinaunix.net/uid-20276248-id-92114.html
本文出自 “Unix-like” 博客，请务必保留此出处http://alipay.blog.51cto.com/7119970/1718834
标签：lvm 逻辑卷管理
原文地址：http://alipay.blog.51cto.com/7119970/1718834
