OCI: Oracle Linux Instance Stops With “reboot: Power down” After Boot

Applies to:

Oracle Cloud Infrastructure - Version N/A and laterLinux x86-64

Symptoms

System stops immediately after booting:

[[0;32m  OK  [0m] Stopped Monitoring of LVM2 mirrors,???sing dmeventd or progress polling.

[[0;32m  OK  [0m] Reached target Shutdown.

[[0;32m  OK  [0m] Reached target Final Step.

[[0;32m  OK  [0m] Started Power-Off.

[[0;32m  OK  [0m] Reached target Power-Off.

[    5.122994] reboot: Power down

Cause

Root file system is 100% utilized:

Solution

1. Reboot the instance to single user mode by following below document:

2. Free up space in the root filesystem by cleaning up unneeded files/logs or alternatively increase the boot volume size an extend the root filesystem.