apptainer(1)                                                      apptainer(1)



NAME
       apptainer-overlay-create - Create EXT3 writable overlay image



SYNOPSIS
       apptainer overlay create  image



DESCRIPTION
       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.



OPTIONS
       --create-dir=[]     directory to create as part of the overlay layout


       -f, --fakeroot[=false]   make overlay layout usable by actions run with
       --fakeroot


       -h, --help[=false]  help for create


       -s, --size=64  size of the EXT3 writable overlay in MiB


       -S, --sparse[=false]     create a sparse overlay



EXAMPLE

         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




SEE ALSO
       apptainer-overlay(1)



HISTORY
       1-Apr-2024 Auto generated by spf13/cobra

Auto generated by spf13/cobra      Apr 2024                       apptainer(1)