Automatic mount of hard drive in linux-rhel7.2

Experimental content:

Mount Partitions in Rhel 7.2

Lab Environment:

VMware Workstation 12

Virtual machine configuration:

Os:rhel 7.2 x64

Memory: 2G

Cpu:2 Nuclear

HDD: SDA 40G

Sda1/boot 524M

sda2/23.6g

Sda3 Swap 1073M

CD/DVD: Mounted Image rhel7.2

Network adapter: Bridging, replicating physical NIC connection status

First, add the new hard disk 20G in the server shutdown state.

In edit virtual machine settings, add the hard disk.

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Leave the default selection, next

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Create a new disk, next

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Specify size 20G, select multi-file mode

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Specify the disk name to complete

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After you create a new disk, start the virtual machine

Viewing the current Mount situation

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Temporarily mount the newly created partition, and now restart the server.

[[Email protected] ~] #init 6

After the server restarts, view the current device mount condition

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View hard disk Partitions

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Create primary partition 650 on new hard disk SDB) this.width=650; "Src=" Http://s3.51cto.com/wyfs02/M01/7F/31/wKiom1cWBivBSsjHAABi9x8RJ-s928.png " Style= "Float:none;" title= "1-13-Create primary partition. png" alt= "Wkiom1cwbivbssjhaabi9x8rj-s928.png"/>

Create an extended partition

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Creating a logical drive

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Print partition list, save exit

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View a list of partitions under a new hard disk

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If it is not displayed, use the following command to refresh

[Email protected] ~]# Partprobe/dev/sdb

Formatting a newly created partition

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To create a mount point

[Email protected] ~]# MKDIR/SDB1

[Email protected] ~]# MKDIR/SDB5

Mount a new partition

[Email protected] ~]# MOUNT/DEV/SDB1/SDB1

[Email protected] ~]# MOUNT/DEV/SDB5/SDB5

View New partition Mount status

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Restart the virtual machine to view the newly created partition

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As you can see, the newly created partitions/sdb1 and/SDB5 are not mounted at this time.

Now edit/etc/fstab to test boot automatically mount the newly created partition

[[Email protected] ~] #vim/etc/fstab

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"ZZ" to save the exit.

Restart the server to view the Mount status (following restart of the server)

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At this point, the automatic mount of the new partition is implemented.

The lack of this mount:

Insufficient reason: The server is not only one hard disk, example: There are four hard drives. In the process of hard disk maintenance, four hard drives are prone to plug dislocation.

How to ensure that hard disk maintenance is not confusing?

Automatic boot mount with UUID

UUID Action

The UUID is a string that identifies the storage device in your system and is designed to help the user uniquely determine all the storage devices in the system, regardless of their type. It can identify DVD drives, USB storage devices, and hard drive devices in your system.

Characteristics:

It's really the only sign

Many of the key features in Linux are now dependent on UUID

Red Hat 5 is mounted via a label, starting with Red Hat 6, which is basically a UUID.

Get the UUID of the device

[Email protected] ~]# Blkid |grep SDB

/dev/sdb1:uuid= "69d99306-6399-4da4-8d6b-b645d0fe5440" type= "XFS"

/dev/sdb5:uuid= "64e82a13-24d3-4d71-bc5a-d4ae3984e24b" type= "XFS"

After getting the UUID to the device, start editing in/etc/fstab

[[Email protected] ~] #vim/etc/fstab

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That is

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Restart the server again to verify the Mount effect

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This time, we can guarantee

Special Mount Method:

[[Email protected] ~] #mount-T XFS/DEV/SDB5/SDB5

-t specifies the file type to mount

。 The ISO file is similar to the real-world CD-ROM drive, and if you encounter a disc image on a real server:

[[Email protected] ~] #mount-O loop rhel-server-7.2-x86_64-dvd/mnt

Implement read-only mount (must be mounted before a read-only image can be mounted)

[[Email protected] ~] #mount-o REMOUNT,RO/SDB5

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Automatic mount of hard drive in linux-rhel7.2