linux-ext4 - Ordered data mode vs. writeback mode

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Message-Id: <3.0.6.32.20080616225930.01b86a60@pop.west.cox.net>
Date:	Mon, 16 Jun 2008 22:59:30
From:	Gary Hawco <ghawco@....net>
To:	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: Ordered data mode vs. writeback mode

Noticed that the newest set of patches in ext4-patch-queue has ordered data
mode as the default mode again. Tune2fs is now able to switch modes again.

What is the preferred mode for a home desktop system with ext4? Is
writeback still the fastest, but ordered data has more data integrity?  And
does delalloc only work when writeback is enabled? And does the commit=XX
seconds still only work with writeback mode, ala ext3, or is it a valid
option with ordered data mode?

Trying to get an idea of the plethora of new options available with ext4.

Keep up the good work!

Gary

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