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This article will explain in detail how to build a Linux system under the RAID disk array. The content of the article is of high quality, so the editor will share it with you for reference. I hope you will have some understanding of the relevant knowledge after reading this article.

Because the storage speed of RAID disk array is higher than that of a single hard disk, we usually choose to build RAID disk array when installing the system. The following editor will introduce the method of building Linux system for RAID disk array.

Equipped with a new computer, ready to install a dual system, windows used to play games, linux used to write code. Specially bought two 1T hard drives, want to use to build RAID0, use parallel Imax O to improve the performance of the computer.

When choosing the motherboard, I deliberately chose the motherboard that supports RAID, msi B85-G43 GAMING, which can use msi's super raid technology, but after buying it, I found that the driver of this thing is the exe program, hehe, the motherboard supports only a pseudo-raid, which can only be used under windows. I thought about it or decided to give up using raid in windows, after all, it was just a daily leisure system, and linux had to pursue performance, so soft RAID was used on linux to achieve.

First of all, install windows 8 on the first disk, give the main partition of 100g as disk C, leave the rest of the hard disk still, and wait for the system to be installed before planning the hard disk.

After the system is installed, use MiniTool Partition Wizard Home Edition 7.0to plan the hard drive. Go straight to the picture and explain later.

Total 1.86T

Windows:

100g system partition, primary partition

231.5g game installation

200g download file

200g download games

150G installation software

150G tool

Shared hard drives:

100g document

331.5g all kinds of music, movies, pictures

Linux: use the latest fedora20

300m boot partition, primary partition, does not use raid, because grub2 visual inspection does not support raid, so separate boot

300m boot backup partition, primary partition, back up a boot partition, you can use this partition to boot in case of an accident

3.6g swap partition, swap0 + swap1, 1.8g each, distributed on two hard drives

20g mount to /, sys0 + sys1, 10g each

50g / usr, usr0 + usr1, 25g each

25g / home,home0 + home1, 12.5g each

50g / var, var0 + var1, 25g each

20g / opt, opt0 + opt1, 10g each

230.8G / data, data0 + data1, 115.4G each, used to store all kinds of downloaded software, compressed packages, virtual machines

At this point, the partition scheme is completed. MiniTool Partition Wizard divides the windows partition and converts the 400G of linux into an ext4 file system according to the above partition plan format. Then start to install the system with live cd.

Carve the fedora live cd installation system on the USB disk

Since the installer for fedora does not have the option to select RAID directly when partitioning, I use console to do RAID.

The tool used here is mdadm.

First, use su root to switch to the root user, and use fdisk-l to see the current partition.

/ dev/sda

/ dev/sdb

It can be observed that / dev/sda3 and / dev/sdb1 are boot and bootbak, respectively. These two partitions are ignored.

/ dev/sda5-11 is the same size as / dev/sdb5-11, so this part is the hard drive we use to make RAID.

Create swap partition (explain how Linux creates and deletes swap partition in system House)

$mdadm-Cv / dev/md0-10-N2 / dev/sd {aforme b} 5$ mkfs.ext4 / dev/md0 this step must be done, otherwise the hard drive md0 cannot be seen in the installation program, and the unknown command can also be written as $mdadm-- create-- verbose / dev/md0-- level=0-- raid-devices=2 / dev/sd {Azob} 5$ mkfs.ext4 / dev/md0

According to the above, make the remaining partitions into RAID partitions, restart the system, and enter the live cd installation interface again. When you partition the hard disk, you can see these RAID hard disk partitions.

Select a partition, fill in the mount point in the details on the right, click re-partition, select ext4 or swap, and then click Update Settings. When you are finished, click start to install the system, and everything will be all right.

After the system is installed, you can check it with df-h.

Use cat / proc/mdstat to view the running status of the RAID partition

Finally, let's test the speed of RAID0

First install the hdparm test tool, yum install hdparm.x86_64

Use the hdparm-tT device name to test / dev/sda and / dev/md0, respectively. The test results are as follows

Using RAID disk array to build Linux system can obviously improve the transmission rate and improve the stable redundancy of the system.

On how to build the Linux system under the RAID disk array is shared here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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