From mboxrd@z Thu Jan  1 00:00:00 1970
From: fs <fs@ercist.iscas.ac.cn>
Subject: RE: [RFD] What error should FS return when I/O failure occurs?
Date: Tue, 17 May 2005 13:20:45 -0400
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Cc: linux-kernel <linux-kernel@vger.kernel.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	Kenichi Okuyama <okuyama@intellilink.co.jp>
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To: "Hua Zhong (hzhong)" <hzhong@cisco.com>
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On Tue, 2005-05-17 at 02:00, Hua Zhong (hzhong) wrote:
> The thing is the EIO almost always happens at background so there is no
> way to return it to the user space. If you want to see EIO, do fsync
> explicitly.
even with fsync, the result is still EROFS,
you can visit
http://developer.osdl.jp/projects/doubt/fs-consistency-and-coherency/
to see the result.