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Re: jffs2 on IDE?
- From: Ross Younger <wry at ecoscentric dot com>
- To: eCos Discussion <ecos-discuss at ecos dot sourceware dot org>
- Date: Wed, 23 Dec 2009 13:23:52 +0000
- Subject: Re: [ECOS] jffs2 on IDE?
- References: <4B30C0FA.9070107@meduna.org>
Stanislav Meduna wrote:
is it possible to use a jffs2 filesystem on a IDE partition?
I'm no expert on either, but it ought to be possible. You may need to
play carefully with how you map one to the other (how many IDE blocks
make up a simulated flash eraseblock) to get good performance.
If not, what is the recommended way of creating a filesystem
on an industrial PC platform using CF-cards for data, where
an unclean shutdown can't be avoided?
This is a tricky case. I don't know what your application is doing with
the IDE drive, but in some cases you might be able to mitigate the risks
by keeping the filesystem read-only for much of the time.
An alternative plan could be to port in a journalled filesystem. ext3
springs to mind, though I don't know how tightly its internals are wired
into the Linux kernel (and I think you might end up needing to port in
jbd as well); Sun's ZFS has been ported to several OSes and might also
be worth a look.
Ross
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