003. LVM resizing

1. LVM resizing steps

1. Create a partition
2. Create PV
3. Resize VG
4. Resize LV
5. Load size

Ii. Create a partition

Use a partitioning tool (such as fdisk) to create LVM partitions, but identify the partitions as 8E of the LVM partition type.

  1 [[email protected] ~]# fdisk -l  2 ……  3    Device Boot      Start         End      Blocks   Id  System  4 /dev/sdb7         4202496     6299647     1048576   8e  Linux LVM  5 /dev/sdb8         6301696     8398847     1048576   8e  Linux LVM

Note: We recommend that you execute partprobe once.

3. Create a PV

1 [[email protected] ~] # Pvcreate/dev/sdb7 # convert the required partition to PV partition 2 physical volume "/dev/sdb7" successfully created 3 [email protected] ~] # Pvcreate/dev/sdb8 # convert the required partition to PV partition 4 physical volume "/dev/sdb8" successfully created

Iv. Resizing VG

1 [[email protected] ~] # Vgextend vg01/dev/sdb8/dev/sdb9 # Add the newly created PV to the existing VG 2 volume group "vg01" successfully extended

5. lv resizing

Note:

1. The premise for LV resizing is that there is sufficient capacity in VG.

2. lv and filesystem can be resized online, but cannot be scaled online.

1 [[email protected] ~] # Lvextend-L 2G-N/dev/vg01/lv01 2 # resize lv01 from vg01 to 2G instead of 2G.

Six Heavy Loads

1 [[email protected] ~] # Xfs_growfs/dev/vg01/lv01 # This is the heavy load size of XFS partition Format 2 [email protected] ~] # Resize2fs/dev/vg01/lv02 # This is the heavy load size of ext partition format

Note: The XFS file system can only be resized and cannot be resized.

003. LVM resizing