apptainer overlay

linux

Manage EXT3 writable overlay images for Apptainer containers.

Options (4)

-s, --sizeboolean

Add a writable overlay to an existing SIF image

Example: apptainer overlay create {{[-s|--size]}} {{size}} {{path/to/image.sif}}

-S, --sparseboolean

Create a sparse overlay image

Example: apptainer overlay create {{[-s|--size]}} {{size}} {{[-S|--sparse]}} {{path/to/overlay.img}}

-f, --fakerootboolean

Create an overlay for use with fakeroot

Example: apptainer overlay create {{[-f|--fakeroot]}} {{[-s|--size]}} {{size}} {{path/to/overlay.img}}

-h, --helpboolean

Display help

Example: apptainer overlay {{[-h|--help]}}

Add a writable overlay to an existing SIF image

apptainer overlay create [-s|--size] size path/to/image.sif

Create a standalone EXT3 writable overlay image

apptainer overlay create [-s|--size] size path/to/overlay.img

Create a sparse overlay image

apptainer overlay create [-s|--size] size [-S|--sparse] path/to/overlay.img

Create an overlay for use with fakeroot

apptainer overlay create [-f|--fakeroot] [-s|--size] size path/to/overlay.img

Create an overlay with a specific directory in the layout

apptainer overlay create --create-dir path/to/directory path/to/overlay.img

Display help

apptainer overlay [-h|--help]