linux-kernel - Re: fsx failure on ufs2

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Message-ID: <20071216211000.GA10964@rain>
Date:	Mon, 17 Dec 2007 00:10:00 +0300
From:	Evgeniy Dushistov <dushistov@...l.ru>
To:	Jean-Marc Saffroy <jean-marc.saffroy@...nge-ftgroup.com>
Cc:	daniel.pirkl@...il.cz, linux-kernel@...r.kernel.org
Subject: Re: fsx failure on ufs2

On Fri, Dec 14, 2007 at 05:21:31PM +0100, Jean-Marc Saffroy wrote:
> For an embedded system, I'm currently evaluating the robustness of ufs2 
> write support on Linux, and my very first test, with fsx, shows serious 
> problems.
>
> My test bed is a single CPU PC with a single IDE disk, that boots FreeBSD 
> 6.2 and Ubuntu 7.10. The kernel on Ubuntu is a vanilla 2.6.23.9 with UFS2 
> write support. fsx is from the freebsd cvs (with a small patch to build on 
> Linux, see after my sig):
>   http://www.freebsd.org/cgi/cvsweb.cgi/src/tools/regression/fsx/
>

I used fsx-linux.c from ext3-tools project, but ran it with
different options.

>
> Can anyone else confirm this problem?
>
Using your options I am able to reproduce this bug.
Looks like problem in ufs_alloc_lastblock, last page in file
contains zeros, but because of ufs_readpage, it can be contains 
garbage. I will look at next week how it can be fixed.

-- 
/Evgeniy

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