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Subject: Re: ubifs error when do bonnie++ test
From: Artem Bityutskiy <dedekind@infradead.org>
To: Jason Liu <liu.h.jason@gmail.com>
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Date: Thu, 02 Apr 2009 15:25:05 +0300
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Cc: Linux mtd <linux-mtd@lists.infradead.org>,
	Adrian Hunter <adrian.hunter@nokia.com>
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On Thu, 2009-04-02 at 17:49 +0800, Jason Liu wrote:
> 2009/4/2 Adrian Hunter <adrian.hunter@nokia.com>:
> > Jason Liu wrote:
> >>
> >> I'm working on the 2.6.26 with ubifs enabled, but after some stress
> >> test, ubifs give some err. The following is the steps to reproduce.
> >
> > Please apply all recent UBIFS patches and enable debugging and try
> > again.
> >
> > You could also enable debugging checks, but that will really slow it down.
> >
> >
> After apply all the patches from users/dedekind/ubifs-v2.6.26.git
> I still get errors with bonnie++ test and only run 3times compared 390
> times without the patch
> 
> Using uid:0, gid:0.
> Writing with putc()...done
> Writing intelligently...done
> Rewriting...done
> Reading with getc()...done
> Reading intelligently...done
> start 'em...done...done...done...
> Create files in sequential order...done.
> Stat files in sequential order...Expected 16384 files but only got 16385
> Cleaning up test directory after error.
> 
> Could you please help on this?Does this means UBIFS has some bugs?

Your eraseblock size is rather not-typical. We did not test UBIFS
on such big eraseblocks, so yes, there may be bugs.

Please, enable UBIFS extra checks and run the tests. Then when it
fails, type dmesg and send the messages please.

-- 
Best regards,
Artem Bityutskiy (Битюцкий Артём)