Oracle Cloud Infrastructure- Adding a block volume and use it for swap

Hello everyone, this is my first blog on Oracle Cloud Infrastructure.

Requirement

To increase Swap of existing compute instance with a new block volume in OCI.

Prerequisite

A valid OCI account with available credits

Steps to Achieve

1. Create a new block volume 550GB

2. Attach the block volume to the instance

3. Execute iscsi commands and verify the disk attachment provided by OCI

ls -l /dev/orcleoci/

4. Do partitioning of the disk to 120GB for swap

    Making the swap partition of required space 120GB

fdisk <NEWLY_ADDED_DISK>

    Command (m for help): n

    Partition number (1-4): 2

    Command (m for help): t

    Hex code (type L to list codes): 82

    Command (m for help): w

    ls -l /dev/orcleoci/

5. Executing necessary commands to check the space and mount the new swap-

• Check disks    lsblk
• Make Swap    mkswap -L sasswap2 /dev/<DISK_PARTITION_ID>
• Check Free Memory    free -m
• Update fstab for permanemt changes Do UUID entry in fstab
• Mount it    swapon -a
• Check Free Memory    free -m
• Check swap storage usage   swapon -s
• Remove new swap swapoff /dev/<DISK_PARTITION_ID>
• Check Free Memory free -m
• Mount again    swapon -a

Below is the end to end demonstration of above steps-