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This article mainly introduces the relevant knowledge of "how to expand the capacity of the partition under Linux". The editor shows you the operation process through the actual case. The operation method is simple, fast and practical. I hope this article "how to expand the capacity of the partition under Linux" can help you solve the problem.

View unallocated space under disk

# check the usage of system space df-h

Use fdisk + disk name, for example

Fdisk / dev/sda

Now you can see the partition under the disk, like this

Now that there is still 200G of space left under the disk, I want to hang it under the / dev/mapper/centos-root file system.

The first step is to create a partition of the remaining space. Refer to the previous article and use the fdisk command to partition the disk.

The newly added partition here is called / dev/sda4

Step 2 create a physical volume

Pvcreate / dev/sda4

If the prompt cannot find / dev/sda4. Please type partprobe this and you should be prompted when you create the partition.

The third step is to view the volume group using vgscan

Vgscan

It's called centos.

The fourth step is to extend centos with the new physical volume

Vgextend centos / dev/sda4

The fifth step is to extend lv. This assumes that the new partition size above is 180G, followed by the partition name to be extended.

Lvextend-L + 180G / dev/mapper/centos-root

It may be suggested that there is not enough space here, perhaps because the calculation error can be reduced appropriately.

Step 6 let the file system recognize the newly added disk file system

Xfs_growfs / dev/mapper/centos-root

Using the command df-h here, you can find that the space under / dev/mapper/centos-root has been expanded by 180G.

This is the end of the content about "how to expand the capacity of the partition under Linux". Thank you for your reading. If you want to know more about the industry, you can follow the industry information channel. The editor will update different knowledge points for you every day.

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