Cram FS on NAND - How to do this?

[angainor at evo.evopolska.com]

> > 3)  What about wear-levelling?
> >
> > Flash blocks do not last indefinitely.  Every erase brings the Flash
> > block you are erasing closer to the end of its lifespan.  Obviously
> > this is less of a concern on a static filesystem like cramfs.
> >
> > Why not put a cramfs filesystem into a file on a YAFFS or JFFS2
> > filesystem and use a loopback to mount it?
> >
> > -Jas.
> >
> >
> >
> Again, no need for that on a read-only filesystem. The number of erases
> I expect during the life of the device is lower than 100.
> 
> And using the loopback trick is impossible for the root filesystem.
> 

Not so impossible ;) You could load the kernel and do the mount
within initrd, then pivot_root / chroot.

Cheers

Marcin