linux-ext4 - How to switch ext4 to ordered

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Date:	Sat, 14 Jun 2008 00:39:35
From:	Gary Hawco <ghawco@....net>
To:	"Theodore Ts'o" <tytso@....edu>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: How to switch ext4 to ordered_data mode

Ted,

I notice that ext4dev defaults to data=writeback mode. This is in contrast
to ext3 which uses ordered data mode. Tune2fs from git does not seem to be
able to change this using "tune2fs -o ^journal_data_writeback /dev/sdaX"
followed by "tune2fs -o journal_data_ordered /dev/sdaX.

Is this change intentional or a not yet worked out bug?

Thanks,
Gary Hawco

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