linux-ext4 - Re: [PATCH v2] ext4: Deprecate data=journal mount option

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Message-ID: <20110629044955.GA30312@untroubled.org>
Date:	Tue, 28 Jun 2011 22:49:55 -0600
From:	Bruce Guenter <bruce@...roubled.org>
To:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH v2] ext4: Deprecate data=journal mount option

On Tue, Jun 28, 2011 at 01:26:03PM +0200, Lukas Czerner wrote:
> Data journalling mode (data=journal) is known to be neglected by
> developers and only minority of people is actually using it. This
> mode is also less tested than the other two modes by the developers.
> 
> This creates a dangerous combination, because the option which seems
> *safer* is actually less safe the others. So this commit adds a warning
> message in case that data=journal mode is used, so the user is informed
> that the mode might be removed in the future.

When I last benchmarked it, data=journal mode was considerably faster
than the other modes for sync heavy work loads, such as mail servers.
Have there been improvements to other (safe) modes that reverse this?

-- 
Bruce Guenter <bruce@...roubled.org>                http://untroubled.org/

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