CentOS Logical Volume Usage

Requirements : 1. Hard disk format into physical volume PVPVCREATE/DEV/SDB/DEV/SDA

2. Create Volume group vgcreatevg1000/dev/sdb1/dev/sdb2# Create Volume Group "vg1000"

3. Increase the volume group capacity vgextendvg2000/dev/sdb2# The physical volume "/DEV/SDB2" into the volume group "vg2000"

4. Reduce VGREDUCEVG2000/DEV/SDB2

5. Delete vgremovevg1000

6. Conversion format vgchange-anvg1000# Set the volume group status to inactive vgconvert-m2v

• 1. Hard disk format into physical volume PV
  Pvcreate/dev/sdb/dev/sda
  2. Create a volume group
  Vgcreate vg1000/dev/sdb1/dev/sdb2 #创建卷组 "vg1000"
  3. Increase Volume Group capacity
  Vgextend vg2000/dev/sdb2 #将物理卷 "/DEV/SDB2" into the volume group "vg2000"
  4. Reduce
  Vgreduce VG2000/DEV/SDB2
  5. Delete
  Vgremove vg1000
  6. Conversion format
  Vgchange-an vg1000 #设置卷组状态为非活动状态
  vgconvert-m2 vg1000 #转换卷组为 "LVM2" format
  vgconvert-m2 vg1000 #转换卷组为 "LVM2" format Volume group vg1000 successfully converted
  Vgchange-ay vg1000 #设置卷组状态为活动状态 0 Logical Volume (s) in volume group ' vg1000 ' now active

  1. Creating a logical Volume
  Lvcreate-n mylv-l 2G Xiaoluo #-N name-l Size
  2. Expansion
  Lvextend-l +1G/DEV/XIAOLUO/MYLV
  Resize2fs/dev/xiaoluo/mylv

  Narrow
  RESIZE2FS/DEV/XIAOLUO/MYLV 10G//The purpose of this command is to narrow down our filesystem and reduce our file system to 10G
  E2fsck-f/DEV/XIAOLUO/MYLV//Use the E2FSCK command to check our file system
  Vreduce-l -4g/dev/xiaoluo/mylv//Shrink 4G-sized logical volumes

CentOS Logical Volume Usage