From owner-freebsd-fs  Thu Mar  7  9:45:55 2002
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Date: Thu, 7 Mar 2002 12:45:47 -0500 (EST)
From: Andrew Atrens <andrew_atrens@yahoo.ca>
Subject: Re: is ext2fs a good template for porting a linux filesystem?
To: Christoph Hellwig <hch@caldera.de>
Cc: fs@FreeBSD.ORG, atrens@nortelnetworks.com
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--- Christoph Hellwig <hch@caldera.de> wrote:
> On Thu, Mar 07, 2002 at 10:43:19AM -0500, Andrew Atrens wrote:
> > Clearcase provides a thin (compilable) shim which fits between the
> > linux kernel and their mvfs module.
> 
> Where is this source part available?

You can download the 4.2 (or 5.0 aka 2002) tarballs from 
www.rational.com. The shim stuff (my name, not theirs) is bundled
in the

v4.2/rhat_x86/etc/conf
or
v5.0/rhat_x86/etc/conf

directory tree(s).

I'm not sure, but I think anybody can download it.

> 
> > It also _might_ make it possible to develop a FreeBSD shim,
> although I
> > really don't know enough yet to know for sure :)
> 
> I think that would be very difficult as the Linux VFS is
> fundamentally
> different from FreeBSD and other 4.4BSD derivates.  Depending on how
> much of the generic library code for filesystems it uses on Linux it
> might be possible, but I bet it would be even more unstable than the
> already rather bad Linux version..

Unfortunately I barely have any experience using the Linux version - I
mostly use Suns for mvfs. From what I've heard though 4.2 is a lot more

stable than 4.1. 5.0 I not sure about - it isn't backward compatible
with 4.x vob databases and I don't know who has tried it.


Thanks for the info !


Cheers,

Andrew
--
| Opinions are mine, not those of any employer.



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