Re: [BUG] fatal hang untarring 90GB file, possibly writeback related.

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Excerpts from Colin Ian King's message of 2011-04-28 09:42:20 -0400:
> 
> On Thu, 2011-04-28 at 08:29 -0400, Chris Mason wrote:
> > Excerpts from Colin Ian King's message of 2011-04-28 07:36:30 -0400:
> > > One more data point to add, I've been looking at an identical issue when
> > > copying large amounts of data.  I bisected this - and the lockups occur
> > > with commit 
> > > 3e7d344970673c5334cf7b5bb27c8c0942b06126 - before that I don't see the
> > > issue. With this commit, my file copy test locks up after ~8-10
> > > iterations, before this commit I can copy > 100 times and don't see the
> > > lockup.
> > 
> > Well, that's really interesting.  I tried with compaction on here and
> > couldn't trigger it, but this (very very lightly) tested patch might
> > help.
> > 
> Thanks Chris,
> 
> I've given this a soak test but I still see the same lockup.

Could you post the soft lockups you're seeing?

-chris
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