From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [RFC xfstests PATCH] xfstests: add a writeback error handling
 test
Date: Mon, 24 Apr 2017 08:00:19 -0700
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To: Jeff Layton <jlayton@redhat.com>
Cc: fstests@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-cifs@vger.kernel.org, linux-mm@kvack.org, jfs-discussion@lists.sourceforge.net, linux-xfs@vger.kernel.org, cluster-devel@redhat.com, linux-f2fs-devel@lists.sourceforge.net, v9fs-developer@lists.sourceforge.net, osd-dev@open-osd.org, linux-nilfs@vger.kernel.org, linux-block@vger.kernel.org, dhowells@redhat.com, akpm@linux-foundation.org, hch@infradead.org, ross.zwisler@linux.intel.com, mawilcox@microsoft.com, jack@suse.com, viro@zeniv.linux.org.uk, corbet@lwn.net, neilb@suse.de, clm@fb.com, tytso@mit.edu, axboe@kernel.dk

On Mon, Apr 24, 2017 at 09:45:51AM -0400, Jeff Layton wrote:
> With the patch series above, ext4 now passes. xfs and btrfs end up in
> r/o mode after the test. xfs returns -EIO at that point though, and
> btrfs returns -EROFS. What behavior we actually want there, I'm not
> certain. We might be able to mitigate that by putting the journals on a
> separate device?

This looks like XFS shut down because of a permanent write error from
dm-error.  Which seems like the expected behavior.