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From: Christoph Hellwig <hch@infradead.org>
To: Dave Chinner <david@fromorbit.com>
Cc: Ilia Mirkin <imirkin@alum.mit.edu>, xfs@oss.sgi.com
Subject: Re: XFS hung on 2.6.33.3 kernel
Date: Sun, 18 Jul 2010 00:57:02 -0400	[thread overview]
Message-ID: <20100718045702.GB6282@infradead.org> (raw)
In-Reply-To: <20100718012033.GA18888@dastard>

On Sun, Jul 18, 2010 at 11:20:33AM +1000, Dave Chinner wrote:
> So, back to the situation with the WARN_ON(). You're running
> applications that are doing something that:
> 
> 	a) is not supported;
> 	b) compromises data integrity guarantees;
> 	c) is not reliably reported; and
> 	d) might be causing hangs
> 
> Right now I'm not particularly inclined to dig into this further;
> it's obvious the applications are doing something that is not
> supported (by XFS or the generic page cache code), so this is the
> first thing you really need to care about getting fixed if you value
> your backups...

While it's slightly crazy it's also a pretty easy way for users to shoot
themselve in their feet.  Unlike the generic filesystems with their
simplistic i_mutex locking we have a way to assure this works properly
in XFS with the shared/exclusive iolock, so I'm willing to look into
this further.

Ilia, would you be willing to test patches for this?

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  parent reply	other threads:[~2010-07-18  4:54 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-07-17  4:01 XFS hung on 2.6.33.3 kernel Ilia Mirkin
2010-07-18  1:20 ` Dave Chinner
2010-07-18  1:35   ` Ilia Mirkin
2010-07-18 23:50     ` Dave Chinner
2010-08-03 22:30       ` Ilia Mirkin
2010-08-04  0:47         ` Dave Chinner
2010-08-04  1:15           ` Ilia Mirkin
2010-08-04  4:27             ` Dave Chinner
2010-08-04  4:39               ` Ilia Mirkin
2010-08-04  6:53                 ` Dave Chinner
2010-08-04 15:40                   ` Ilia Mirkin
2010-08-05  5:45                     ` Dave Chinner
2010-08-05  6:25         ` Dave Chinner
2010-08-05  6:42           ` Ilia Mirkin
2010-08-07 10:08             ` Dave Chinner
2013-04-04 21:44               ` qiyansun
2010-07-18  4:57   ` Christoph Hellwig [this message]
2010-07-18  5:28     ` Ilia Mirkin
2010-07-18 20:17       ` Ilia Mirkin
2010-07-18 23:33     ` Dave Chinner

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