1apptainer(1)                                                      apptainer(1)
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NAME

6       apptainer-overlay-create - Create EXT3 writable overlay image
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SYNOPSIS

11       apptainer overlay create  image
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DESCRIPTION

16       The  overlay create command allows creating EXT3 writable overlay image
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18         as a single EXT3 image or by adding it automatically to  an  existing
19       SIF image.
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OPTIONS

24       --create-dir=[]      directory to create as part of the overlay layout
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27       -f,  --fakeroot[=false]       make overlay layout usable by actions run
28       with --fakeroot
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31       -h, --help[=false]      help for create
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34       -s, --size=64      size of the EXT3 writable overlay in MiB
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37       -S, --sparse[=false]      create a sparse overlay
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EXAMPLE

42                To create and add a writable overlay to an existing SIF image:
43                $ apptainer overlay create --size 1024 /tmp/image.sif
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45                To create a single EXT3 writable overlay image:
46                $ apptainer overlay create --size 1024 /tmp/my_overlay.img
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48                To create a sparse overlay when creating a new ext3 file system image:
49                $ apptainer overlay create --size 1024 --sparse /tmp/ext3_overlay.img
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51                To create an EXT3 writable overlay image for use with --fakeroot actions:
52                $ apptainer overlay create --fakeroot --size 1024 /tmp/my_overlay.img
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SEE ALSO

58       apptainer-overlay(1)
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HISTORY

63       29-Mar-2023 Auto generated by spf13/cobra
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67Auto generated by spf13/cobra      Mar 2023                       apptainer(1)