[ILUG] Archive WORM ( write once ) Filesystem

[Gerry Boland]

HiI've come across mini_fo[1] for embedded devices. It overlays a r/w
filesystem
over a r/o one. You might be able to script the system to commit changed
files
(and not the deleted) from the mini_fo storage to the r/o partition somehow.
I
think it would be an even more ugly hack
than your idea tho, and there would
be a risk of filename collisions.

chattr no good, no?
-G
[1] http://www.denx.de/wiki/Know/MiniFOHome


2009/7/2 Rory Browne <rbmlist at gmail.com>

> Hello Folks
>
> I'm looking for a filesystem-based solution to archive signed
> documents. The main requirement of this is that it be write-once, and
> that files once written cannot be deleted or changed.
>
> After much googling, I'm considering a loop-back UDF filesystem, with
> the media stored as worm ( write once, read many ). The problem with
> this, is that from a user point of view, it allows them to delete, or
> modify files ( even though the original is still there, since the
> filesystem thinks it's on a write-once medium ). I'm considering
> countering this problem using a fuse-based filesystem which basicly
> refuses to delete or modify exisiting files, but it seems a bit of an
> ugly hack.
>
> Does anyone know of any cleaner solution?
>
> Rory
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