How to adjust swap size in Linux? Tips for expanding Linux swap partition

Let me share with you how to expand the swap partition capacity in Linux.

First, use the fdisk -l command to check the size of the swap partition of the current system. The current size is 4G;

Edit the host settings and add a 10G hard disk .

Use the fdisk -l command again to check whether the newly added hard disk is recognized normally.

For the newly added hard disk partition, adjust the format to LVM

Use in sequence:

fdisk /dev/sdb --> n --> p --> 1 -->Enter->Enter--> t --> 8e --> p --> w

command.

Use partx /dev/sdb to view the newly formatted new hard disk

View pv, vg and lv status

#pvs #vgs #lvs

Create pv and check pv status

#pvcreate /dev/sdb1

#pvs

Add pv to vg and check pv and vg status

#vgextend centos /dev/sdb1

#pvs

#vgs

Expand lv, and check pv, vg and lv status:

#lvextend -l 100 %FREE /dev/mapper/centos-swap

#pvs #vgs #lvs

Check the system partition again. The swap partition has been expanded successfully.

#fdisk -l

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