apptainer overlay create
Create EXT3 writable overlay image
Synopsis
The overlay create command allows creating EXT3 writable overlay image either as a single EXT3 image or by adding it automatically to an existing SIF image.
apptainer overlay create <options> image
Examples
To create and add a writable overlay to an existing SIF image:
$ apptainer overlay create --size 1024 /tmp/image.sif
To create a single EXT3 writable overlay image:
$ apptainer overlay create --size 1024 /tmp/my_overlay.img
To create a sparse overlay when creating a new ext3 file system image:
$ apptainer overlay create --size 1024 --sparse /tmp/ext3_overlay.img
To create an EXT3 writable overlay image for use with --fakeroot actions:
$ apptainer overlay create --fakeroot --size 1024 /tmp/my_overlay.img
Options
--create-dir strings directory to create as part of the overlay layout
-f, --fakeroot make overlay layout usable by actions run with --fakeroot
-h, --help help for create
-s, --size int size of the EXT3 writable overlay in MiB (default 64)
-S, --sparse create a sparse overlay
SEE ALSO
apptainer overlay - Manage an EXT3 writable overlay image
Auto generated by spf13/cobra on 5-Sep-2024