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by dredmorbius 2332 days ago
tmpfs is the better-behaved option should you run out of resources, see:

https://www.jamescoyle.net/knowledge/951-the-difference-betw...

I'm still remembering old-school ramdisks under Linux which were finite in both number and size, both to quite small extents. I think there were 8 (or 12 or 16?) total ramdisks available, of only 2-4 MB each, configurable with LILO boot options.

That's now ... mostly taking up valuable storage in my own brain for no useful effect.
1 comments
fctorial 2332 days ago
It looks like a good intro, thanks. I wasn't aware of these technologies, but I knew it was possible to build an FS in RAM. So I just put these two keywords together.
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dredmorbius 2332 days ago
FWIW, I learned a few things researching my answer.

(A prime validation for answering questions, BTW.)

My first read was that the old-school ramfs / ramdisk limitations still held. I can't actually even find documentation on them, though I'm pretty sure I'm not dreaming this.

Circa 2.0 kernal IIRC, possibly earlier.

OK, some traces remain, see:

https://www.tldp.org/HOWTO/Bootdisk-HOWTO/x1143.html

Note that this is OBSOLETE information.

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