Virtual machines use LVM to manage new disks

1: Add two new disks to the virtual machine settings, 1 2g,1 5G (i mount two because I'm going to do a swap experiment, if I just mount a 5G with LVM)

2: Log in the system, use Fdisk-l to view the disk information (please restart)

3:LVM Management

A) Creating logical partitions

Fdisk/dev/sdc

#因为磁盘是空的, so I first created a primary partition to play with, size is 1G

N (Create a new partition)

P (primary partition)

Carriage return (mode start position)

+1G (primary partition size)

=========== Note that there is a selection on the top of the serial number, the default can be =================

Start creating an extended partition

N (new partition)

E (extended partition)

Enter (default start position)

Carriage return (default size, which is the remaining size of the disk)

============ Create complete =======================================

To start creating the logical partition, the logical partition is created on the extended partition that we just created, and after we have an extended partition, I enter n and then I automatically come out with this option.

N (new partition)

L (logical partition)

Enter (default start position)

+1G (1g size)

By default, the same is true, creating two logical partitions, my logical partitions are/DEV/SDC5,/DEV/SDC6 respectively 1g,2g

=========================================================

Input W Save

PARTPROBE/DEV/SDC (Synchronizing information)

===========================================================

b) Start LVM

Create PV

pvcreate/dev/sdc{5,6}

Create VG

Vgcreate vg_01/dev/sdc{5,6}

Once the creation is successful, start creating the LV

Lvcreate-n lvol0-l vg_01

Here small L is the number of blocks, a piece of my default is 4M, a specific piece of how much can be vgdisplay to view the pesize, this value can be changed

Well, this time lvol0 was created.

Formatting lvol0

Mkfs.ext4/dev/vg_01/lvol0

Then close at the mount point ABC.

Mount/dev/vg_01/lvol0/abc

If you need to mount the boot automatically, you need to write to/etc/fstab

/DEV/VG_01/LVOL0/ABC EXT4 Defaults 0 0

Reboot

Virtual machines use LVM to manage new disks