lvm的安装
在线安装 yum install lvm2
离线安装，下载后执行 rpm -ivh * --nodeps --force
在如下网站中挨个下载http://mirrors.163.com/centos/7/os/x86_64/Packages/
device-mapper-1.02.170-6.el7_9.5.x86_64.rpm
device-mapper-event-1.02.170-6.el7_9.5.x86_64.rpm
device-mapper-event-libs-1.02.170-6.el7_9.5.x86_64.rpm
device-mapper-libs-1.02.170-6.el7_9.5.x86_64.rpm
device-mapper-persistent-data-0.8.5-3.el7_9.2.x86_64.rpm
libaio-0.3.109-13.el7.x86_64.rpm
lvm2-2.02.187-6.el7_9.5.x86_64.rpm
lvm2-libs-2.02.187-6.el7_9.5.x86_64.rpm
使用lvm将磁盘不分区创建逻辑券并挂载
1.创建pv
root@ecs-fcgxtjsxm-app-prd-0003 centos\]# pvcreate /dev/vdb3 Physical volume "/dev/vdb3" successfully created. ### 2.创建vg \[root@ecs-fcgxtjsxm-app-prd-0003 centos\]# vgcreate zhvg /dev/vdb1 /dev/vdb2 Volume group "zhvg" successfully created ### 3.创建lv \[root@ecs-fcgxtjsxm-app-prd-0003 centos\]# lvcreate -n zhlv -L +150G zhvg WARNING: xfs signature detected on /dev/zhvg/zhlv at offset 0. Wipe it? \[y/n\]: y Wiping xfs signature on /dev/zhvg/zhlv. Logical volume "zhlv" created. ### 4.格式化文件系统 \[root@ecs-fcgxtjsxm-app-prd-0003 /\]# mkfs.xfs /dev/zhvg/zhlv meta-data=/dev/zhvg/zhlv isize=512 agcount=4, agsize=9830400 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=0, sparse=0 data = bsize=4096 blocks=39321600, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=1 log =internal log bsize=4096 blocks=19200, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 ### 5.磁盘挂载 \[root@ecs-fcgxtjsxm-app-prd-0003 /\]# mount /dev/zhvg/zhlv /mydata \[root@ecs-fcgxtjsxm-app-prd-0003 /\]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sr0 11:0 1 1024M 0 rom vda 253:0 0 100G 0 disk └─vda1 253:1 0 100G 0 part / vdb 253:16 0 500G 0 disk ├─vdb1 253:17 0 100G 0 part │ └─zhvg-zhlv 252:0 0 150G 0 lvm /mydata ├─vdb2 253:18 0 100G 0 part │ └─zhvg-zhlv 252:0 0 150G 0 lvm /mydata └─vdb3 253:19 0 100G 0 part \[root@ecs-fcgxtjsxm-app-prd-0003 /\]# blkid /dev/vda1: UUID="6cd50e51-cfc6-40b9-9ec5-f32fa2e4ff02" TYPE="xfs" /dev/vdb1: UUID="tfiIX7-TU5B-jPSd-ZmnO-LTcT-hKdC-Kiwce9" TYPE="LVM2_member" /dev/vdb2: UUID="1ydi74-WbOo-jRuY-ZlAe-9ITo-9t1x-4sd8PC" TYPE="LVM2_member" /dev/mapper/zhvg-zhlv: UUID="ab669eaf-c2bc-45da-9b8a-ec4b64939d6b" TYPE="xfs" ### 6.设置开机启动 echo "/dev/mapper/myvg-mydata /data xfs defaults 0 0" \>\> /etc/fstab #### lvm逻辑券常用命令 pvremove /dev/vdb3 #删除pv vgextend zhvg /dev/vdb3 #vg扩容 vgreduce zhvg /dev/vdb3 #vg缩容，移除pv vgremove zhvg #删除卷组 lvextend -L180G /dev/zhvg/zhlv #lv扩容 180g是扩容后的容量，必须大于现有的容量 lvreduce -L 20G /dev/zhvg/zhlv #lv缩容 20G是缩容后的容量 lvremove /dev/zhvg/zhlv #删除lv xfs_growfs /dev/zhvg/zhlv #lv扩容后需执行此命令 df -h中的实际容量才会生效 mount -a #执行/etc/fstab的内容 mount -l #查看磁盘挂载情况 pvs vgs lvs 查询券的情况 pvscan vgscan lvscan 查询券的情况 pvdispaly vgdisplay lvdispaly 查看券的详情