Sample code sharing on virtual machine and partition disk expansion space recording in Linux (picture and text)

This article mainly introduces the detailed explanation of Linux virtual machine root partition disk expansion space record, which has certain reference value. Interested friends can refer to

blogger: Centos6.5 64-bit VM 11

Cause: I want the Linux virtual machine in VM11 to be displayed in full screen, and I want to support the seamless copy and paste function between the virtual machine and the physical machine. Installationvmware tools caused insufficient space, and the following appears

After searching online, I found the solution:

yum remove gnome-power-manager
yum install gnome-power-manager

After execution:

The prompt is insufficient space

Check:

Sure enough, the space utilization is 100%

The question turns to:

1. Why is it used so fast?

2. How to expand?

Question 1:

This is the root directory, and everything installed is in it. (This is a brief summary, and no in-depth research has been done)

The main topic:

It took about 2 hours to solve it, and the record is as follows:

1. Disk expansion

#Fill in the size of the disk you need, the value you fill in - the size of the current hard disk = the value you added

2. View,

Command: fdisk -l (root user)

[ding@master ~]$ sudo fdisk -l

Disk /dev/sda: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000c82f5

  Device Boot   Start     End   Blocks  Id System
/dev/sda1  *      1     64   512000  83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2       64    1045   7875584  8e Linux LVM

Disk /dev/mapper/vg_master-lv_root: 7205 MB, 7205814272 bytes
255 heads, 63 sectors/track, 876 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg_master-lv_swap: 855 MB, 855638016 bytes
255 heads, 63 sectors/track, 104 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

found that it has become 21.5G

3. Operation partition table

Command:

fdisk /dev/sda

Type p to view the number of partitions and get:

Judge us from this The added partition number should be 3 (dev/sda1, dev/sda2...the next one should be dev/sda3)

Type n to add a partition and get:

Type p, primary partition, and type 3 (number):

Just set the default start sector and end sector (type Enter twice)

Type t and modify the partition type to 8e:

Type w, write the partition table, and then restart:

4. Format

mkfs.etx4 /dev/sda3

.ext4 is its own file system type. If you don’t know, you can query ：

parted /dev/sda

(parted) print list
1

parted

5. Expand the volume and add it to the LVM group:

##lvm> pvcreate /dev/sda3　　　　Initialize the partition just now

##lvm> vgextend vg_master /dev/sda3　 Add the initialized partition to the virtual volume group vg_master

lvm>lvextend -L +12G /dev/vg_master/lv_root Expand the capacity of an existing volume

##lvm>pvdisplay

View the volume capacity

lvm>quit　　　　　　　　　

6. File system expansion

resize2fs /dev/vg_master/lv_root

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