> Source: [sk177723](https://support.checkpoint.com/results/sk/sk177723)

# sk177723 - Docker and filesystem messages in /var/log/message after reboot

| Property | Value |
|----------|-------|
| Solution ID | sk177723 |
| Date Created | 2022-02-02 |
| Last Modified | 2026-08-10 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R81.20, R81.10 (EOS), R81 (EOS) |

## Symptoms

- Docker system messages in the */var/log/messages* file in Gaia OS:  

1. `kernel: TECH PREVIEW: Overlay filesystem may not be fully supported.`  
   `kernel: Please review provided documentation for limitations.`  
2. `kernel: cgroup: docker-runc (11055) created nested cgroup for controller "memory" which has incomplete hierarchy support. Nested cgroups may change behavior in the future.`  
   `kernel: cgroup: "memory" requires setting use_hierarchy to 1 on the root.`

## Solution

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