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53 lines
1.2 KiB
Markdown
53 lines
1.2 KiB
Markdown
# Mount files as virtual file systems
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## Table of contents <!-- omit in toc -->
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1. [TL;DR](#tldr)
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1. [Further readings](#further-readings)
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1. [Sources](#sources)
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## TL;DR
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```sh
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# Create the file.
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truncate -s '10G' 'path/to/file'
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dd if='/dev/zero' of='path/to/file' bs=4MiB count=250K status='progress'
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# Create the file system on such file.
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mkfs.ext4 'path/to/file'
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# Create the mount point.
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mkdir 'mount/point'
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# Mount the file system.
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# The 'loop' option is optional.
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sudo mount -t 'ext4' -o 'loop' 'path/to/file' 'mount/point'
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```
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Prefer `truncate` to `dd` to let the file expand dynamically and be resized (both larger or smaller) without damaging data with `losetup` and `resize2fs`.
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## Further readings
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- [dd]
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- [truncate]
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## Sources
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All the references in the [further readings] section, plus the following:
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- [How do I create a file and mount it as a filesystem?]
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<!--
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References
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-->
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<!-- In-article sections -->
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[further readings]: #further-readings
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<!-- Knowledge base -->
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[dd]: dd.md
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[truncate]: truncate.md
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<!-- Others -->
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[how do i create a file and mount it as a filesystem?]: https://askubuntu.com/questions/85977/how-do-i-create-a-file-and-mount-it-as-a-filesystem#1402052
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