Sean P. Kane wrote 78 lines:
> I'd love to have a unionfs, but my understanding is that no such beast
> exists for Linux 2.4 currently
Try looking at
http://plasticfs.sourceforge.net/plasticfs.html
Plasticfs-viewpath is basically a unionof all filesystems in
the viewpath, changes happen on the first one and a .whiteout
remembers what you deleted. It does *not* work for root
(security!!! You do not want root to see /tmp/login instead of
/bin/login!). Remember to set the environment variables, e.g.
LD_PRELOAD=/usr/local/lib/libplasticfs.so
PLASTICFS="viewpath /ramdisk /cdrom1 /cdrom2"
/bin/bash # or whatever program you want.
Since Plasticfs works on file-level, you should be able to mix
and match filesystems as you like. Note however that --- since
we just overload common FS access methods --- some things might
not work.
I have it in production use (for Aegis, not for cdroms).
-Wolfgang
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