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Date: Fri, 3 Apr 2009 02:30:59 -0400
From: Theodore Tso <tytso@mit.edu>
To: "Trenton D. Adams" <trenton.d.adams@gmail.com>
Cc: David Rees <drees76@gmail.com>, Christian Kujau <lists@nerdbynature.de>,
       Artem Bityutskiy <Artem.Bityutskiy@nokia.com>,
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Subject: Re: EXT4-ish "fixes" in UBIFS
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On Thu, Apr 02, 2009 at 11:15:29PM -0600, Trenton D. Adams wrote:
> 
> tdamac ~ # mount -t ext3 -o data=writeback,remount,rw /dev/s/sys /
> mount: / not mounted already, or bad option
> 
> Does it have to be done on initial mount?

Yes, which means you have to use the rootflags boot command-line
option.

It's a pain that we can't switch data= modes on the fly.  I believe
the problematic transiations are between data=journal and
data=!journal.  Transitions between data=ordered and data=writeback
should be easy to add.

						- Ted



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