[Huawei Cloud] Simple use of cloud disk EVS

1. Purchase a disk

The parameters are as follows

View successfully purchased disks

• Note: The newly purchased hard disk belongs to the data disk. If the hard disk is purchased together with the cloud server, it belongs to the system disk.
  

2. Disk mounting and partitioning

Mount disk to cloud server

• Note: In Huawei Cloud, cloud disks can only be mounted to cloud servers in the same availability zone.

View disk name

• As shown below, the current cloud server has two disks, /dev/vda is the system disk, and /dev/vdb is the new data disk

fdisk -l

Partition the disk**[optional]**

fdisk /dev/vdb
n
p
enter
2048*n
w

View partition results

fdisk -l

Create file system format

mkfs -t ext4 /dev/vdb

# 如果进行了分区操作，如上面的步骤，需修改如下
mkfs -t ext4 /dev/vdb1

Create a new mount point

mkdir /mnt/data

Mount the new partition to the new mount point

mount /dev/vdb /mnt/data

View mount results

• It can be seen that the cloud disk has been successfully mounted to the cloud server.

df -TH

3. Automatic mounting

Choose the following three methods according to your needs to automatically mount the disk.

• Soft link of elastic cloud disk
• UUID (universally unique identifier) ​​of the file system
• Device name

You can view relevant information through the following command

View soft links of elastic cloud disks

ls -l /dev/disk/by-id

View file system UUID

blkid /dev/vdb

View device name

fdisk -l

Edit /etc/fstab file to configure automatic mounting

• Note: It is recommended to back up the file before modifying it.

# 备份
cp -r /etc/fstab /etc/fstab.bak

# 编辑
vim /etc/fstab

Add the following content to the last line, choose one of the three【结合前面通过命令查看到的信息】

# 使用弹性云硬盘的软链接自动挂载
/dev/disk/by-id/virtio-18ce058b-b856-402f-b /mnt/data ext4 defaults 0 0

# 使用磁盘分区的 UUID 自动挂载
UUID=030b1d57-3134-4790-91c7-1f2979fecd2b /mnt/data  ext4 defaults     0   0

# 使用磁盘分区的 UUID 自动挂载
/dev/vdb /mnt/data   ext4 defaults     0   0

Check /etc/fstab file is written successfully

• Note: No prompt means success

mount -a

4. Test

Restart the server and check whether automatic mounting is set successfully.

• As can be seen from the picture, it has been successfully mounted.

df -TH

5. Reference

Cloud hard disk Initialize cloud hard disk (less than 2TB)-Operation Guide-Document Center-Tencent Cloud (tencent.com)