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Sample code sharing on virtual machine and partition disk expansion space recording in Linux (picture and text)
- 黄舟Original
- 2017-06-18 13:35:151723browse
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>pv
display
lvm>quit
6. File system expansion
resize2fs /dev/vg_master/lv_root
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