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SubjectRe: /linuxrc query
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In article <985356959.24859@whiskey.enposte.net>,
David Woodhouse <dwmw2@infradead.org> wrote:
>amit@muppetlabs.com said:
>> Also as a note, what we are doing is keeping our rootfs on flash as a
>> tar.gz and reading it and mounting it on a ramfs in the /linuxrc
>> before doing a pivot_root. To summarize, pivot_root has been a life
>> saver as the earlier real_root_dev might not have been useful in this
>> case. Not using the ramfs limits for now, will do soon.
>
>If you're concerned about memory usage - why untar the whole of your root
>filesystem into a ramfs? My preferred solution is to just mount the root
>filesystem directly from the flash as cramfs (or JFFS2), with symlinks into a
>ramfs for appropriate parts like /tmp and /var.
>
>I suppose the best option is actually to union-mount the ramfs over the
>root, rather than mucking about with symlinks. I just haven't got round to
>doing that yet.

Union would be fine. But until then I prefer ramfs as root with symlinks
to cramfs for anything that doesn't need to be writeable.

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