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Date: Thu, 15 Nov 2018 01:49:32 -0800
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH] xfs: fix shared extent data corruption due to missing
 cow reservation
Message-ID: <20181115094932.GA10264@infradead.org>
References: <20181113170819.15220-1-bfoster@redhat.com>
 <20181115055020.GS4235@magnolia>
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To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: Brian Foster <bfoster@redhat.com>, linux-xfs@vger.kernel.org

On Wed, Nov 14, 2018 at 09:50:20PM -0800, Darrick J. Wong wrote:
> I ran this through my overnight tests and saw no adverse effects, though
> Dave was complaining yesterday about continuing generic/091 corruptions
> (which I didn't see with this patch applied...)

I've seen occasional 091 corruption failures in always_cow mode, but
not often enough to be easily reproducible.