linux-kernel - Re: [RFC PATCH 0/3] Stop clearing uptodate flag on write IO error

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Message-ID: <CA+55aFxggjW6FKhf7KSCRMD-4YF9ymsxDQ+EMtUTThX16r-8tw@mail.gmail.com>
Date:	Mon, 23 Jan 2012 15:49:39 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	"Ted Ts'o" <tytso@....edu>, Dave Chinner <david@...morbit.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jan Kara <jack@...e.cz>, linux-fsdevel@...r.kernel.org,
	linux-ext4@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Hellwig <hch@...radead.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	LKML <linux-kernel@...r.kernel.org>,
	Edward Shishkin <edward@...hat.com>
Subject: Re: [RFC PATCH 0/3] Stop clearing uptodate flag on write IO error

On Mon, Jan 23, 2012 at 1:47 PM, Ted Ts'o <tytso@....edu> wrote:
>
> So how does XFS decide whether a write should fail and shutdown the
> file system, or just "try forever"?

Why would it bother? XFS tends to be a filesystem that you'd only use
for core files in environments where you have a system manager that
knows what he is doing. So there, maybe "try forever" is the right
thing to do.

Things are a bit different with some random unreliable USB stick FAT32
filesystem that just died on you, with a normal user that just removes
the thing or doesn't even notice that the stick is now dead. There the
"try forever" is totally the wrong thing to do.

                            Linus
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