linux_lvm

测试一
lsblk 创建一个新磁盘

fdisk /dev/sdb


转换分区类型

查看

保存分区

partprobe -s

查看分区结果

pvcreate /dev/sdb1

vgcreate vg01 /dev/sdb1

lvcreate vg01 -n lv01 -l 100%FREE

查看PV



mkfs.ext4 /dev/mapper/vg01-lv01

blkid

mkdir /test1

写入tstab中



测试二

fdisk /dev/sdb





lsblk

pvcreate /dev/sdb2

vgcreate vg02 /dev/sdb2

lvcreate vg02 -n lv02 -l 100%FREE


mkfs.xfs /dev/mapper/vg02-lv02

blkid | tail -2

mkdir /test2

tail -2 /etc/fstab

mount -a

lsblk -fs


测试三
df -hT > df





查看分区，保存

partprobe -s

vgextend vg02 /dev/sdb3



LV的对比,没变化

lvextend /dev/mapper/vg02-lv02 -l +100%FREE -r -t

lvextend /dev/mapper/vg02-lv02 -l +100%FREE -r

查看对比

对比查看



测试四
lsblk创建一个新磁盘

pvcreate /dev/sdc

vgcreate vgdata /dev/sdc

lvcreate vgdata -n lvdata -l 100%FREE

查看创建的

mkfs.xfs /dev/mapper/vgdata-lvdata

blkid | tail -3

echo “UUID=“b372622e-c9e8-423c-ba59-780db6d75e20” /app xfs defaults 0 0” >> /etc/fstab

创建挂载点


查看

测试五
lsblk

pvcreate /dev/sdd /dev/sde

vgcreate vgproup /dev/sdd /dev/sde



lvcreate vgproup -n lvpr -l 100%FREE


mkfs.xfs /dev/mapper/vgproup-lvpr

mkdir /test3
echo “/dev/mapper/vgproup-lvpr /test3 xfs defaults 0 0” >> /etc/fstab

mount -a
tail -3 /etc/fstab


创建目录测试

测试六

pvcreate /dev/sdf

vgcreate vghomeapp /dev/sdf


lvcreate vghomeapp -n lvh1 -L 5G



lvcreate vghomeapp -n lvh2 -l 100%FREE



mkfs.xfs /dev/mapper/vghomeapp-lvh1
mkfs.xfs /dev/mapper/vghomeapp-lvh2

echo “/dev/mapper/vghomeapp-lvh1 /home1 xfs defaults 0 0” >> /etc/fstab
echo “/dev/mapper/vghomeapp-lvh2 /home2 xfs defaults 0 0” >> /etc/fstab
mkdir /home1
mkdir /home2

mount -a
tail -3 /etc/fstab

查看创建

测试七
lsblk

fdisk /dev/sdg




partprobe -s

fdisk /dev/sdh




partprobe -s

查看分区

pvcreate /dev/sdg1 /dev/sdh1


vgcreate vgtest1 /dev/sdg1 /dev/sdh1


不用在创建PV了
vgcreate vgtest2 /dev/sdg2 /dev/sdh2


lvcreate vgtest1 -n lvmt1 -L 7G
lvcreate vgtest2 -n lvmt1 -L 5G



mkfs.xfs /dev/mapper/vgtest1-lvmt1

mkfs.ext4 /dev/mapper/vgtest2-lvmt1

blkid | tail -3

mkdir /lvm1
mkdir /lvm2

echo “/dev/mapper/vgtest1-lvmt1 /lvm1 xfs defaults 0 0” >> /etc/fstab
echo “/dev/mapper/vgtest2-lvmt1 /lvm2 ext4 defaults 0 0”>> /etc/fstab
mount -a

tail -3 /etc/fstab


测试八
lsblk

pvcreate /dev/sdi



vgextend centos /dev/sdi



lvextend /dev/mapper/centos-root -l +100%FREE -r -t

lvextend /dev/mapper/centos-root -l +100%FREE -r