Re: [leaf-devel] 2.6.x kernel support?

[Erich T. <eri...@th...>]

Eric

E.S...@in... wrote:
> 
> I don't follow you here. Why do you wan't to use loop mounted cramfs? Does
> it use RAM or ROM (Flash/HD/Floppy/..). The advantage of full RAM based
> systems is that you can unmount the storage media. Besides the footprint
> of Bering-uClibc with base packages is only ~8Mb.

Yes, but look at it when it holds ipsec, ssh, samba, squid...

A loop mounted cramfs looks (for read_only operations) exactly like a
part of the file system tree. The benefit of this is that, even on ram,
it cannot be trivially modified and it takes a lot less RAM space
because it compresses its contents.

For example if we had all the /bin in a cramfs called bin.cfs which
would sit at /

we could mount

mount -o loop /bin.cfs /bin

and the space needed by bin.cfs would be a lot smaller than if the
individual files in /bin would be installed normally.

The same is true for all read_only components, like /lib /sbin /usr/bin

cheers

Erich