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fb75774a43
Related to: https://github.com/containers/podman/issues/28684 Signed-off-by: Jan Rodák <hony.com@seznam.cz>
34 lines
1.2 KiB
Markdown
34 lines
1.2 KiB
Markdown
####> This option file is used in:
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####> podman podman-container.unit.5.md.in, create, run
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####> If file is edited, make sure the changes
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####> are applicable to all of those.
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<< if is_quadlet >>
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### `Tmpfs=`
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<< else >>
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#### **--tmpfs**=*fs*
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<< endif >>
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Create a tmpfs mount.
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Mount a temporary filesystem (**tmpfs**) mount into a container, for example:
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```
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$ podman <<subcommand>> -d --tmpfs /tmp:rw,size=787448k,mode=1777 my_image
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```
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This command mounts a **tmpfs** at _/tmp_ within the container. The supported mount
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options are the same as the Linux default mount flags. If no options are specified,
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the system uses the following options:
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**rw,noexec,nosuid,nodev**.
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By default, Podman enables **tmpcopyup** on tmpfs mounts, which copies the contents
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of the underlying image directory into the tmpfs before mounting it. This also
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applies when the tmpfs destination is inside a volume or bind mount: files from
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the parent mount are copied into the tmpfs, so the parent content remains visible.
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To mount an empty tmpfs that shadows a parent mount's subtree, use the
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**notmpcopyup** option:
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```
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$ podman <<subcommand>> --volume myvolume:/data --tmpfs /data/sub:notmpcopyup my_image
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```
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