Shulou(Shulou.com)06/02 Report--

Note: the environment is a centos7 virtual machine created in vmware vcenter6.5

Goal: add a 20g hard disk to the existing hard disk

Figure 1 below shows the previous configuration:

Editing

Click OK.

Restart the virtual machine

Open the console

Open the terminal and you can see the 20g hard drive you just added.

Fdisk-l

Create a PV (physical volume)

Pvcreate / dev/sdb

You can see that the PV has been created, and then pvdisplay, and you can see that the name of the VG (volume group) with PV name / dev/sda2 is cl, while the newly created VG name with PV name of / dev/sdb is displayed as none. Therefore, you need to add the created PV to an existing volume group

Vgextend cl / dev/sdb

Extend the newly added disk capacity to the root logical volume root

Lvextend-L + 20g / dev/cl/root

Although it has been added to the root logical volume group at this time, it is not formatted into the corresponding file format at this time, so it cannot be displayed at this time, as shown in the figure

So perform the formatting operation

Xfs_growfs / dev/mapper/cl-rootdf-h

You can see that it has been mounted to the root logical volume.

In addition, new logical volumes can be created (as long as there is new disk capacity)

Lvcreate-L 30g-n test_name cl

Test_name is the name of the logical volume, and cl is the name of the volume group

Then format and mount it.

Mkfs.ext4 / dev/cl/test_name mount / dev/cl/test_name / mnt/ df-h

That's it.

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