Is overlay2 supported for use with docker container runtime on SLES?

This document (7022824) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Server 12 Service Pack 3 (SLES 12 SP3)
SUSE Linux Enterprise Server 12 Service Pack 2 (SLES 12 SP2)

Situation

Is the use of overlay2 with docker container run-time, supported on SUSE Linux Enterprise Server?

Resolution

The overlay2 driver is supported for Docker EE and recommended for Docker CE for the listed environments.

The following backing filesystems are supported:  Btrfs, xfs and ext4. 




Cause


Additional Information

OverlayFS is a modern union filesystem that is similar to AUFS.

In order to check the support status of a module (overlayfs is a loadable kernel module), search for the word 'supported' in the output of the modinfo command and check if it is followed by a 'yes' (supported) or 'no' (not supported) :-

------------------------< snip >------------------------

naxos root (1)  # modinfo overlay
filename:       /lib/modules/4.4.120-94.17-default/kernel/fs/overlayfs/overlay.ko
alias:          fs-overlayfs
alias:          fs-overlay
license:        GPL
description:    Overlay filesystem
author:         Miklos Szeredi <miklos@szeredi.hu>
srcversion:     65608194BEED319AF076ACC
depends:        
supported:      yes
retpoline:      Y
intree:         Y
vermagic:       4.4.120-94.17-default SMP mod_unload modversions 
signer:         SUSE Linux Enterprise Secure Boot Signkey
sig_key:        3F:B0:77:B6:CE:BC:6F:F2:52:2E:1C:14:8C:57:C7:77:C7:88:E3:E7
sig_hashalgo:   sha256

------------------------< snap >------------------------


As regards the support of SLES12 content, the general statement is: "We support what we ship"

Any exceptions to this statement should be marked in the Release Notes of SLES.




Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:7022824
  • Creation Date: 06-Apr-2018
  • Modified Date:03-Mar-2020
    • SUSE Linux Enterprise Server

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