Scenario: How to increase or decrease swap space(logical volume swap) in CentOS 6/RHEL 6
System: CentOS 6/ RHEL 6
Steps increase Swap space
Example increase 1 GB swap space.
1) You must check the path of swap logical volume and the free space in the swap volume group before continue to step 2.
# free -m
# lvdisplay | grep swap
# vgs
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Scenario: Example remove Logical Volume that mount in /cache
System: CentOS/RHEL 6 or 7
Steps:
– Check partition df -h
– Unmount /cache partition.
– Check df -h again to make sure /cache already unmounted
– Check logical volume path that we will remove.
– Edit /etc/fstab and remove or comment the logical volume path that we will remove.
– Type vgs to check Volume Group size before remove logical volume.
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