Docker overlayfs Storage Backend: Difference between revisions

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=External=
* https://docs.docker.com/storage/storagedriver/overlayfs-driver/
* https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html-single/7.3_Release_Notes/index.html#technology_previews_file_systems
=Internal=
=Internal=


* [[Docker_Concepts#Storage_Backend|Docker Concepts - Storage Backend]]
* [[Docker_Storage_Concepts#overlayfs_Storage_Driver|Docker Storage Concepts - Storage Backend]]


=Overview=
=Overview=


overlay and overlay2l operate at the file level rather than the block level. Because of this, but the container’s writable layer may grow quite large in write-heavy workloads.
overlay and overlay2 operate at the file level rather than the block level. Because of this, but the container’s writable layer may grow quite large in write-heavy workloads.


=Info=
=Info=

Latest revision as of 16:04, 7 May 2018

External

Internal

Overview

overlay and overlay2 operate at the file level rather than the block level. Because of this, but the container’s writable layer may grow quite large in write-heavy workloads.

Info

At runtime, general statistics on the overlayfs storage driver can be obtained with:

docker info
[...]
Storage Driver: overlay2
 Backing Filesystem: extfs
 Supports d_type: true
 Native Overlay Diff: true
[...]
Docker Root Dir: /var/lib/docker
[...]